Anhydrous diluents for the isobutylene oxidation reaction to met

Details Anhydrous diluents for the isobutylene oxidation reaction to met Anhydrous diluents for the isobutylene oxidation reaction to met

1991-10-23

1992-10-13

Prescott, Arthur C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acids and salts thereof

562534, C07C 5125, C07C 57055

Patent

active

051552620

ABSTRACT:
The processes for oxidation of isobutylene to methacrolein and the oxidation of isobutylene to methacrylic acid in two stages with methacrolein as an intermediate are improved by use of essentially inert essentially anhydrous diluent gases to replace steam in the reaction streams. In particular, the uses of essentially inert essentially anhydrous diluents which raise the composite heat capacity of the diluent gas mixture to at least about 6.5 calories/(gram-mole) (.degree.C.) will improve selectivity to desired products and will reduce both the waste water load on the system and by-product formation.

REFERENCES:
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patent: 4049577 (1977-09-01), Childress et al.
patent: 4267385 (1981-05-01), Umemura et al.
patent: 4306090 (1981-12-01), Kirch et al.
patent: 4618709 (1986-10-01), Sada et al.
S.R.I. Report No. 11-C, "Methacrylic Acid and Esters", pp. 3-4, 7, 9-14, 81-84.

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