Catalyst for methacrolein oxidation and method for making and using same
AssigneeSaudi Basic Industries Corporation
InventorsScott A. Stevenson, Wugeng Liang, James W. Kauffman, Lixia Cai, Angie McGuffey, Joseph R. Linzer
Life of this patent
Estimating the term…
Abstract
A catalyst for oxidation of unsaturated and/or saturated aldehyde to unsaturated acids is disclosed where the catalyst including at least molybdenum (Mo), phosphorus (P), vanadium (V), bismuth (Bi), and a first component selected from the group consisting of potassium (K), rubidium (Rb), cesium (Cs), thallium (Tl), or mixtures or combinations thereof, where the catalyst has at least 57% medium pores and a nitric acid to molybdenum mole ratio of at least 0.5:1 or at least 6.0:1 moles of HNO3 per mole of Mo12. Methods for making and using such catalysts are also disclosed.
Claims20
A heteropolyacid catalyst comprising at least molybdenum (Mo) and phosphorus (P) adapted to gas-phase oxidize aldehydes to unsaturated acids, where the heteropolyacid catalyst is formed having a pore size distribution comprising at least 55% medium pores.
Dependencies are inferred from the claim text.