GB2304104A - Process for producing boron trichloride - Google Patents
Process for producing boron trichloride Download PDFInfo
- Publication number
- GB2304104A GB2304104A GB9516557A GB9516557A GB2304104A GB 2304104 A GB2304104 A GB 2304104A GB 9516557 A GB9516557 A GB 9516557A GB 9516557 A GB9516557 A GB 9516557A GB 2304104 A GB2304104 A GB 2304104A
- Authority
- GB
- United Kingdom
- Prior art keywords
- boron
- carbide
- reactor
- boron trichloride
- chlorine
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- FAQYAMRNWDIXMY-UHFFFAOYSA-N trichloroborane Chemical compound ClB(Cl)Cl FAQYAMRNWDIXMY-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910052796 boron Inorganic materials 0.000 claims abstract description 30
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 29
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 229910052580 B4C Inorganic materials 0.000 claims description 12
- INAHAJYZKVIDIZ-UHFFFAOYSA-N boron carbide Chemical compound B12B3B4C32B41 INAHAJYZKVIDIZ-UHFFFAOYSA-N 0.000 claims description 12
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 11
- 239000000460 chlorine Substances 0.000 claims description 11
- 229910052801 chlorine Inorganic materials 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 239000001301 oxygen Substances 0.000 claims description 8
- 229910052760 oxygen Inorganic materials 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 7
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- 238000004821 distillation Methods 0.000 claims description 4
- 239000001307 helium Substances 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 3
- 238000010926 purge Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 239000000203 mixture Substances 0.000 description 11
- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 description 7
- 239000000047 product Substances 0.000 description 7
- 150000001639 boron compounds Chemical class 0.000 description 6
- 229910052810 boron oxide Inorganic materials 0.000 description 6
- 239000006227 byproduct Substances 0.000 description 4
- 239000012071 phase Substances 0.000 description 4
- 235000010339 sodium tetraborate Nutrition 0.000 description 4
- 229910021538 borax Inorganic materials 0.000 description 3
- 239000003638 chemical reducing agent Substances 0.000 description 3
- UQGFMSUEHSUPRD-UHFFFAOYSA-N disodium;3,7-dioxido-2,4,6,8,9-pentaoxa-1,3,5,7-tetraborabicyclo[3.3.1]nonane Chemical compound [Na+].[Na+].O1B([O-])OB2OB([O-])OB1O2 UQGFMSUEHSUPRD-UHFFFAOYSA-N 0.000 description 3
- 239000008246 gaseous mixture Substances 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 239000011541 reaction mixture Substances 0.000 description 3
- 239000004328 sodium tetraborate Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 229910011255 B2O3 Inorganic materials 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 235000010338 boric acid Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- YGYAWVDWMABLBF-UHFFFAOYSA-N Phosgene Chemical compound ClC(Cl)=O YGYAWVDWMABLBF-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 125000005619 boric acid group Chemical class 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004939 coking Methods 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000004508 fractional distillation Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000003319 supportive effect Effects 0.000 description 1
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical class [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B35/00—Boron; Compounds thereof
- C01B35/06—Boron halogen compounds
- C01B35/061—Halides
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Carbon And Carbon Compounds (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
A process for producing boron trichloride comprises reacting a carbide of boron eg B 4 C or B 6 C with chlorine gas at an elevated temperature in a reactor (10) tube containing the carbide of boron (16) in finely divided form and having an inlet (12) for chlorine gas, an outlet (14) for vaporised product and means (18) eg a susceptor for heating the carbide of boron to a desired reaction temperature.
Description
TITLE: Process for producing boron trichloride
DESCRIPTION
This invention concerns a process for producing boron trichloride.
Boron trichloride is a useful starting material for various purposes. Boron trichloride has been used as a starting material in the production of, for example, boron nitride, lanthanum boride and catalysts for cationic polymerisation. Various processes have been described for preparing boron trichloride. In U.S.
Patent No. 2097482 boron trichloride was prepared by passing chlorine gas through a mixture of an oxygencontaining boron compound and free carbon heated to a temperature within the range of about 400 to about 7000C, the proportion by weight of oxygen-containing boron compound to free carbon being within the range of about 0.6 to about 1.5.
According to U.S. Patent No. 2369212 boron trichloride was prepared by passing chlorine through a mixture of boron oxide and carbon and heated to elevated temperatures above about 12000C to eliminate therefrom all moisture and absorbed atmospheric gases contained therein and to effect the consolidation of the mixture into a porous sintered product consisting largely of boron sub-oxides before chloridising the mixture.
In U.S. Patent No. 3019089 boron trichloride was prepared by reacting an oxygen-containing boron compound selected from boric oxides, boric acids and sodium borates with chlorine and carbon at an elevated temperature to produce a gaseous mixture comprising boron trichloride which upon cooling to a temperature below about 2500C deposited solids consisting primarily of a boron trichioride-boric oxide complex and spraying the gaseous mixture at a temperature above about 2500C with a liquid comprising essentially boron trichloride, whereby boric oxide solids-forming constituents of the gaseous mixture were removed therefrom.
In U.S. Patent No. 3152869 a process for making boron trichloride is described wherein a mixture of a boron-oxide containing material and a solid carbonaceous reducing agent consisting essentially of carbon is devolatilized and dehydrated and the mixture so formed is treated in a vertical moving bed reaction zone with chlorine at a temperature of between about 500 and 14000C, wherein the level of solid carbonaceous reducing agent relative to boron-oxide containing materials in the initial mixture is adjusted to at least about 1.75 times the stiochiometric requirements to produce entirely CO from the carbonaceous reducing agent and the boron oxide containing material; a coke-forming binder is added to the mixture at the time of formation thereof, the mixture is formed into agglomerates having a dimensional range between about 1/16 of an inch and about 4 inches and dehydrating and devolatizing by heating the mixture at a temperature of between about 100 and 7000C for a time sufficient to remove substantially all water and other volatile material and to produce a coking bond therein, said forming of agglomerates and heating preceding contacting said mixture with chlorine, the agglomerate so formed being charged into the top of a vertical reaction zone and passing the agglomerates downwardly while passing chlorine into the bottom of the reaction zone and allowing the chlorine to pass upwardly therethrough and boron trichloride is recovered from the top of the reaction zone.
More recently it has been proposed in U.S. Patent
No. 4125590 to produce boron trichloride by introducing boron containing ore consisting essentially of sodium tetraborate into a reaction zone; introducing carbon into the reaction zone; heating the reaction zone to an elevated temperature to produce a molten reaction mixture consisting essentially of the boron-containing ore and carbon; introducing chlorine gas into the molten reaction mixture to form molten by-products and gaseous products comprising crude boron trichloride within the reaction zone; maintaining the reaction zone at an elevated temperature to effect a separation of the molten by-products from the molten reaction mixture to form a molten by-product-rich upper phase and a molten reactant-rich lower phase in the reaction zone; withdrawing at least a portion of the molten by-product rich upper phase; and recovering at least a portion of the gaseous products formed within the reaction zone.
The recovery of at least a portion of the gaseous products preferably further includes the steps of partially condensing the gaseous products to produce at least a liquid phase comprising crude boron trichloride; separating the liquid phase from gaseous products; subjecting the liquid phase to a two stage distillation to produce at least a light phase comprising purified boron trichloride; and recovering the purified boron trichloride.
Finally, from U.S. Patent No. 4327062 the production of boron trichloride may be achieved by heating activated carbon particles having a supportive aqueous solution of a boron compound thereon at a temperature of from 300 to 10000C and then reacting the resultant activated carbon particles with chlorine.
Typically boron oxide and sodium tetraborate are used as the boron compound.
A problem with all of the above processes is that they utilise an oxygen containing boron compound, such as boron oxide, boric acid or sodium tetraborate, which can lead to the incorporation of impurities such as carbonoyl chloride, carbon monoxide and carbon dioxide in the resultant boron trichloride. These impurities are difficult to remove and can be detrimental to the performance of the boron trichloride in its further applications.
An object of the invention is to provide an improved process for producing boron trichloride.
According to a first aspect of the invention there is provided a process for producing boron trichloride, which comprises reacting a carbide of boron with chlorine gas at an elevated temperature.
According to another aspect of this invention there is provided apparatus for producing boron trichloride from chlorine gas and a carbide of boron comprising a reactor tube containing the carbide of boron in finely divided form, an inlet for chlorine gas, an outlet for vaporized product and means for heating the carbide of boron to a desired reaction temperature.
Preferably B4C will be the carbide of boron used but it may be possible to use B6C as another source of boron.
The carbide of boron is preferably heated to a temperature of at least 8000C. Heating of the carbide of boron is preferably achieved using a susceptor, i.e.
a material that couples with radio frequency (RF) to achieve the desired temperature. A useful susceptor is made of silicon carbide.
The process according to the invention results in an exothermic reaction which produces vaporized boron trichloride, which is of high purity, and leaves carbon as a residue. The boron trichloride is preferably collected as a vapour, liquified and may be purified using conventional techniques. Typically purification will be carried out by fractional distillation.
The reaction is preferably carried out in a reactor tube, especially of quartz and the reactor tube is preferably arranged vertically, so that chlorine gas can be passed through it in a downward direction. The carbide of boron is preferably packed into the reactor tube and the heating source, typically a silicon carbide susceptor, is placed at the top of the reactor in contact with the boron carbide.
The reactor is preferably gas tight and air or moisture is preferably substantially removed prior to reaction. Typically the reactor will be subjected to reduced pressure to draw off moisture and will preferably be purged with a non-oxygen containing gas, such as helium.
The rate of flow of chlorine through the reactor is preferably controlled to match the rate of reaction.
Typically the rate of flow of chlorine gas through a reactor will be at least 3.0 Kg/hour and preferably between 3.0 and 8.0 Kg/hour.
The boron carbide used preferably has a mesh size of between 2 and 5.
This invention will now be further described, by way of example only, with reference to the accompanying drawing which shows apparatus for producing boron trichloride from a carbide of boron and chlorine gas.
Referring to the accompanying drawing, apparatus for producing born trichloride from a carbide of boron and chlorine gas comprises a quartz reactor tube 10 of 10cm internal diameter and 1 metre in length. The reactor tube 10 has in inlet 12 for chlorine gas and an outlet 14 for vaporized reaction product consisting primarily of boron trichloride. The reactor is held vertical and gas flow therethrough is downwards. The reactor tube is sealed to be gas tight to avoid entry of oxygen or oxygen containing gases. The reactor is filled with a carbide of boron 16, usually B4C, of mesh size 2 to 5cm and a 5cm square silicon carbide susceptor 18 is placed in the top of the reactor in contact with the boron carbide.The susceptor is connected to a radio frequency source which causes the susceptor to become heated until it glows red, typically at about 8000C. The susceptor promotes the reaction of chlorine with the boron carbide to produce boron trichloride in accordance with the following equation:
B4C + 6C12
4BC13 + C
The carbon remains in the reactor and the boron trichloride exits the reactor as a vapour for collection and purification, usually by distillation.
This invention will now be further described by means of the following example.
EXAMPLE
This Example used the apparatus described with reference to the accompanying drawing. The quartz reactor tube of 10 cm internal diameter and 1 metre in length was filled with 6 kg. boron carbide (B4C) having a mesh size of between 2 and 5. A silicon carbide susceptor, approximately 5 cm square, was placed in intimate contact with the boron carbide at the top of the reactor. The reactor was vacuumed and purged at least four times with high purity helium gas to remove residual traces of air and moisture.
The silicon carbide susceptor was heated using a coupled radio frequency source to red heat (at least 8000C) and chlorine gas was then passed through the reactor from the top and through the boron carbide at a rate of at least 3.0 kg/hour.
Resultant vaporize boron trichloride was liquified and purified by traditional distillation techniques. Analysis showed that the reaction took place at an efficiency of greater than 80%. The resultant boron trichloride was substantially free of oxygen containing impurities.
Claims (25)
1. A process for producing boron trichloride, which comprises reacting a carbide of boron with chlorine gas at an elevated temperature.
2. A process as claimed in claim 1, wherein B4C is the carbide of boron used.
3. A process as claimed in claim 1, wherein B6C is used as the source of boron.
4. A process as claimed in claim 1,2 or 3, wherein the carbide of boron is heated to a temperature of at least 8000C.
5. A process as claimed in claim 4, wherein heating of the carbide of boron is achieved using a susceptor, i.e. a material that couples with radio frequency (RF) to achieve a desired temperature.
6. A process as claimed in claim 5, wherein the susceptor is made of silicon carbide.
7. A process as claimed in any one of claims 1 to 6, wherein boron trichloride is collected as a vapour.
8. A process as claimed in claim 7 further comprising the steps of liquefying the collected boron trichloride and purifying same by distillation.
9. A process as claimed in any one of claims 1 to 8, wherein the reaction is carried out in a reactor tube.
10. A process as claimed in claim 9, wherein the reactor tube is of quartz.
11. A process as claimed in claim 9 or 10, wherein the reactor tube is arranged vertically, so that chlorine gas can be passed through it in a downward direction.
12. A process as claimed in claim 9, 10 or 11, wherein the carbide of boron is packed into the reactor tube and the heating source is placed at the top of the reactor in contact with the boron carbide.
13. A process as claimed in any one of claims 9 to 12, wherein the reactor is gas tight and air or moisture is substantially removed prior to reaction.
14. A process as claimed in claim 13, wherein the reactor is subjected to reduced pressure to draw off moisture and is purged with a non-oxygen containing gas.
15. A process as claimed in claim 14, wherein the purging gas is helium.
16. A process as claimed in any one of claims 9 to 15, wherein the rate of flow of chlorine through the reactor is controlled to match the rate of reaction.
17. A process as claimed in claim 16, wherein the rate of flow of chlorine gas through the reactor is at least 3.0 Kg/hour.
18. A process as claimed in claim 17, wherein the rate of flow of chlorine gas through the reactor is between 3.0 and 8.0 Kg/hour
19. A process as claimed in any one of claims 1 to 18, wherein the boron carbide used has a mesh size of between 2 and 5.
20. A process as claimed in claim 1 and substantially as hereinbefore described with reference to the foregoing Example.
21. Apparatus for producing boron trichloride from chlorine and a carbide of boron comprising a reactor tube containing the carbide of boron in finely divided form, an inlet for chlorine gas, an outlet for vaporised product and means for heating the carbide of boron to a desired reaction temperature.
22. Apparatus as claimed in claim 21, wherein the reactor is a quartz tube.
23. Apparatus as claimed in claim 21 or 22, wherein the means for heating the carbide of boron is a susceptor coupled to radio frequency.
24. Apparatus as claimed in claim 23, wherein the susceptor is of silicon carbide.
25. Apparatus for producing boron trichloride substantially as hereinbefore described with reference to and as illustrated in the accompanying drawing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9516557A GB2304104A (en) | 1995-08-12 | 1995-08-12 | Process for producing boron trichloride |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB9516557A GB2304104A (en) | 1995-08-12 | 1995-08-12 | Process for producing boron trichloride |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB9516557D0 GB9516557D0 (en) | 1995-10-11 |
| GB2304104A true GB2304104A (en) | 1997-03-12 |
Family
ID=10779153
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9516557A Withdrawn GB2304104A (en) | 1995-08-12 | 1995-08-12 | Process for producing boron trichloride |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB2304104A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000037475A1 (en) * | 1998-12-19 | 2000-06-29 | Epichem Limited | Process and apparatus for production of organometallic compounds |
| RU2243155C1 (en) * | 2003-07-30 | 2004-12-27 | Дзержинский опытный завод авиационных материалов Открытое акционерное общество "Авиабор" | Boron trichloride production process |
| WO2005056475A1 (en) * | 2003-12-10 | 2005-06-23 | Basf Aktiengesellschaft | Method for producing boron trichloride |
| WO2017221642A1 (en) * | 2016-06-23 | 2017-12-28 | 昭和電工株式会社 | Method for producing boron trichloride |
| US20210230010A1 (en) * | 2018-06-26 | 2021-07-29 | Showa Denko K.K. | Method of producing boron trichloride |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB711254A (en) * | 1951-08-25 | 1954-06-30 | Norton Grinding Wheel Co Ltd | Process for the manufacture of boron nitride |
| GB971943A (en) * | 1960-10-25 | 1964-10-07 | Gordon Owen Shipton | Improvements in and relating to mineral active carbons and to a process for their preparation |
| GB1328559A (en) * | 1969-11-18 | 1973-08-30 | Elektroschmelzwerk Kempton Gmb | Process for the manufacture of boron halides |
| DE2826747A1 (en) * | 1978-06-19 | 1980-01-03 | Hans Dr Kral | Boron halide continuous prodn. from boron carbide and halogen - using catalyst of cobalt or nickel halide |
-
1995
- 1995-08-12 GB GB9516557A patent/GB2304104A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB711254A (en) * | 1951-08-25 | 1954-06-30 | Norton Grinding Wheel Co Ltd | Process for the manufacture of boron nitride |
| GB971943A (en) * | 1960-10-25 | 1964-10-07 | Gordon Owen Shipton | Improvements in and relating to mineral active carbons and to a process for their preparation |
| GB1328559A (en) * | 1969-11-18 | 1973-08-30 | Elektroschmelzwerk Kempton Gmb | Process for the manufacture of boron halides |
| DE2826747A1 (en) * | 1978-06-19 | 1980-01-03 | Hans Dr Kral | Boron halide continuous prodn. from boron carbide and halogen - using catalyst of cobalt or nickel halide |
Non-Patent Citations (1)
| Title |
|---|
| Derwent WPI Abstract 80-01803C/02 & DE002826747 * |
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000037475A1 (en) * | 1998-12-19 | 2000-06-29 | Epichem Limited | Process and apparatus for production of organometallic compounds |
| GB2358632A (en) * | 1998-12-19 | 2001-08-01 | Epichem Ltd | Process and apparatus for production of organometallic compounds |
| US6495707B1 (en) | 1998-12-19 | 2002-12-17 | Epichem Limited | Process and apparatus for production of organometallic compounds |
| GB2358632B (en) * | 1998-12-19 | 2004-01-28 | Epichem Ltd | Process and apparatus for the continuous production of organometallic compounds |
| RU2243155C1 (en) * | 2003-07-30 | 2004-12-27 | Дзержинский опытный завод авиационных материалов Открытое акционерное общество "Авиабор" | Boron trichloride production process |
| WO2005056475A1 (en) * | 2003-12-10 | 2005-06-23 | Basf Aktiengesellschaft | Method for producing boron trichloride |
| WO2017221642A1 (en) * | 2016-06-23 | 2017-12-28 | 昭和電工株式会社 | Method for producing boron trichloride |
| TWI643816B (en) * | 2016-06-23 | 2018-12-11 | 日商昭和電工股份有限公司 | Boron trichloride manufacturing method |
| KR20190002632A (en) * | 2016-06-23 | 2019-01-08 | 쇼와 덴코 가부시키가이샤 | Method for producing boron trichloride |
| CN109195909A (en) * | 2016-06-23 | 2019-01-11 | 昭和电工株式会社 | The manufacturing method of boron chloride |
| JPWO2017221642A1 (en) * | 2016-06-23 | 2019-04-11 | 昭和電工株式会社 | Method for producing boron trichloride |
| EP3476804A4 (en) * | 2016-06-23 | 2019-05-22 | Showa Denko K.K. | PROCESS FOR PRODUCING BORON TRICHLORIDE |
| US20190330069A1 (en) * | 2016-06-23 | 2019-10-31 | Showa Denko K.K. | Method for producing boron trichloride |
| KR102178425B1 (en) * | 2016-06-23 | 2020-11-13 | 쇼와 덴코 가부시키가이샤 | Method for producing boron trichloride |
| US20210230010A1 (en) * | 2018-06-26 | 2021-07-29 | Showa Denko K.K. | Method of producing boron trichloride |
| US12049406B2 (en) * | 2018-06-26 | 2024-07-30 | Resonac Corporation | Method of producing boron trichloride |
Also Published As
| Publication number | Publication date |
|---|---|
| GB9516557D0 (en) | 1995-10-11 |
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