SU561506A3 - The method of obtaining aliphatic or aromatic acids and / or their esters - Google Patents

Description

(54) METHOD FOR OBTAINING ALIPHATIC OR

AROMATIC ACIDS AND / OR THEIR COMPLEX ETHERS

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initial spdrt is higher than 90% of n {) and. (at one end — alcohol: cJv, ;;;;; in K, paBKONi K) - E) TO ;: i.

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MOJibtiOM Single Synerg: complex ether equal to 10 - iOOO: K

Usually, the acid esters of the target ester or ester of the ester of the acid and the ester of the molar ratio of the ester. Ft – ft: the ester should be 0.001-2: 1; 10-10000: 1 or 2-10: 1 corresponds to the GBekno. 05grzuchuchuchs the target number of the acid is distilled off, and pizkoksh i1ie components - Kots c-n / A methyl, cedar-reacted methanol and meiyeshcetat are corrected (in the case of obtaining acetic acid),

In a similar way, the division is also carried out with the help of a layer of a-south ether.

When Xeroxo, jzoaaish "of alcohol containing a complex zflr, it is not necessary to add an extrinsic water quantity.

When adding water in the water quality, it is above the water. 3: V MojifipHos at 50--300%, accelerating the formation of the target acid.

EXAMPLE 1: To a de-rcodking reactor, load 0.554 g of iridium chloride, 28.8 g of iodide, 196.9 g of acetic acid, and 79 g of e-anode, (up to 70 kg total carbon dioxide). cm (-pardmal davidie carbon monoxide 56 kg / cm) -, 5 hgreva: goth up to 175 ° C, npvi is carried out constancy. 6 wt.% Methide iodide, 6.9 dun.% Of catalyst and other products.

The selectivity to the ratio of acetic acid to the acetic acid over 9: 5% of the conversion of methanol. By-product: the first products are aldepsch, D5 megaryl ester, the more fast carboxylic acids, fvffixgB, and zuoxide of the carbon black are formed in minor amounts. To achieve 50% KOHsep-csffl methscol to urousic acid you need 82 Miw ..

PRI mme R 2. When using 1.17 g of 1F 1 (Cf, HS) 3 P, (CO) C, 2S, 9 g of methane iodide (gadOcd: atomic weight irid i40: l), 196, 9 g of acetic acid and 75 g of methanol and pH xing, as in Example 1, g of O1 solution solution, containing 93.80% by weight of acetic acid, 2.30 EU.% Added metal vs 3.90 N / A wt. Of catalyst and othervtx components.

And: the selectivity with respect to a divisional carboxylic acid more than 95% at 100% conversion ivieraiiona: Fodder product - aldehydes, mixed: gfir, more carbohydrate acids, methane and carbon dioxide are formed in unreadable quantities of carbonic acid, methane and carbon dioxide form in not readily available quantities of sulfuric acid, methane and carbon dioxide are formed in unreadable quantities of carbonic acid, methane and carbon dioxide form in not readily available quantities of acid. 200 units are needed to achieve the conversion of melanode to acetic acid.

PRI me R 3. Using 2.58 tons of carbonyl: gi of cobalt, 28.8 g of hydrochloride, 165 g of benzene, and 79 g of pot; shoda, g of carbonigraphy, as in Example 1. More than 50 ln. Ug of the original metagol prevradgas P sfpr. also formed io; u .. c :: ed, 1 meg. ,, usna ::: hsislot not

ishzi

Example 4. 1.5 g of Co {C5NeO}) s 4HiO, 3.81 g of iodine and 237 g of methanol are fed into a batch reactor, carbon monoxide is fed to a total pressure of 175 kg / cm (partial pressure of carbon monoxide 140 kg / cm) at a reaction temperature of 195 ° C. The catalyst is rapidly resolving to cobalt metal. More than 60 mol% of the starting methanol is converted to dimethyl ether. Significant amounts of water are also formed, and less than 5 mol.% Of methanol is converted to methyl erert and acetic acid.

As can be seen from the above examples, the selectivity of the proposed catalysts is significantly higher than the selectivity of catalysts based on cobalt compounds. In the presence of cobalt compounds of the catalyst being used.

a significant amount of dimethyl fluoride is produced, which leads to a significant increase in the total pressure required to obtain the target fluids. Thus, a total pressure of 140 kg / cm is required to maintain a partial pressure of 52.7 kg / cm.

In addition, on the walls of the reactor due to high napijHam.Horo pressure of carbon monoxide occurs deposited metallic cobalt, I

as a result, the catadshator consumption increases. When applying the proposed Irktshev to catalysts for the deposition of the potalla on the walls of the reactor is not observed.

The table shows the conditions of the process and the delivery of the resulting products from the product.

t n

01n

2

"- 3

diM lisliHi

yi g S6 iPSS

$ S

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I § I

AND.

I-t

1 h 1

U

WITH; to

J o

I I ..;

1i

 3I

I h 1

I I H4) I

n 1

and with s s

A 3

Claims (10)

1. Ousob the production of aliphatic or aromatic acids and / or their complex equilibrium by carboxylate appropriate alcohols, refrave, haloalkov or their suysey at a temperature of 50-500 ° C and the pressure in the presence of catalysts followed by release of the left product, characterized by , in order to increase selectivity and simplified propeco, metal iridium I / ISH1 its compounds promoted with bromine, iodine or their compounds are used as a catalyst. 2. A method according to claim 1, characterized in that Jr I (Ce Hj) 3 P j (CO) CtJrCfe4H, 0; JrJ3, Jrl (C6H,) 3Asb ( 3. Method pop. 1 and 2, differing from -km. The process is given by npi at a carbon dioxide pressure of 0–} 7–1054 KG / QM and a temperature of 0024 (H. 4. Method according to Ш1. 1-3, I am different in that that the process is conducted in the medium of the target product, for example, acetic acid, or an organic solvent, for example, benzene. 5. Method according to paragraphs. 1-4, characterized in that the process is conducted in the presence of water. 6. Method according to paragraphs. 1-5, about 1 ml of h and y with the fact that, in order to obtain the desired acidic process, the process is carried out until reaching the core of the kiergers. sprint higher than 90% at a molar ratio of the initial sk1pt; complex ether 10-10000: 1. 7. Method method1. 1-6.01 liters and c that in order to predominantly obtain the desired complex zfir, the process is carried out until the initial alcohol conversion is no less than 90% with a molar ratio of alcohol: ether equal to 10-1000: 1. at 8. Oyusob popp. 1-7, characterized in that "gto use telerode containing hydrogen, paraffin hydrocarbons, inert gases in an amount up to 99%. 9. Method according to paragraphs. 1-8, characterized in that the process forms a catalyst in the form of a solution. 10. Method according to paragraphs. 1-8, characterized in that when carrying out the process in the vapor phase, a catalyst on a solid support is used Priority points: 04/05/67 under Clause 10, 01/30/68 by pc 1-9.