Production of methacrolein
AssigneeSumitomo Chemical Company, Limited
InventorsShuzo Nakamura, Hiroshi Ichihashi, Yoshihiko Nagaoka, Koichi Nagai
Life of this patent
Estimating the term…
Abstract
In the production of methacrolein by vapor phase catalytic oxidation of isobutylene and/or t-butyl alcohol, an improved process for suppressing the amount of acetone to be by-produced which comprises contacting a gaseous mixture comprising isobutylene or t-butyl alcohol, molecular oxygen and steam with a metal oxide catalyst composition comprising molybdenum and bismuth as the essential metal components, the amount of steam in the gaseous mixture being kept to be not more than 4 mol per mol of isobutylene or not more than 3 mol per mol of t-butyl alcohol.
Claims11
In the production of methacrolein by vapor phase catalytic oxidation of isobutylene and/or t-butyl alcohol, an improved process for suppressing the amount of acetone to be by-produced which comprises contacting a gaseous mixture comprising isobutylene or t-butyl alcohol, molecular oxygen and steam with a metal oxide catalyst composition comprising metal components corresponding to the formula:
- Mo-Bi-Fe-X-Y-Z wherein X is at least one of Ni, Co, Mg, Mn, Cr, W, Sn or Cu, Y is at least one of P, B and Te and Z is at least one of K, Rb, Cs and Tl, the presence of Y and/or Z being optional, the amount of steam in the gaseous mixture being kept to be not more than 4 mol per mol of isobutylene or not more than 3 mol per mol of t-butyl alcohol.
Dependencies are inferred from the claim text.