Invention Grant
US07649111B2 Catalyst for the oxidation of a mixed aldehyde feedstock to methacrylic acid and methods for making and using same
有权
用于将混合醛原料氧化成甲基丙烯酸的催化剂及其制备和使用方法
- Patent Title: Catalyst for the oxidation of a mixed aldehyde feedstock to methacrylic acid and methods for making and using same
- Patent Title (中): 用于将混合醛原料氧化成甲基丙烯酸的催化剂及其制备和使用方法
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Application No.: US11189116Application Date: 2005-07-25
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Publication No.: US07649111B2Publication Date: 2010-01-19
- Inventor: Wugeng Liang , Scott A. Stevenson , Angie McGuffey , Joseph R. Linzer
- Applicant: Wugeng Liang , Scott A. Stevenson , Angie McGuffey , Joseph R. Linzer
- Applicant Address: SA
- Assignee: Saudi Basic Industries Corporation
- Current Assignee: Saudi Basic Industries Corporation
- Current Assignee Address: SA
- Agent Robert W Strozier; Jim Wheetington
- Main IPC: C07C51/16
- IPC: C07C51/16 ; C07C51/235 ; B01J27/00 ; B01J27/198 ; B01J27/19 ; B01J27/192

Abstract:
A heteropolyacid catalyst for oxidation of isobutyraldehyde, methacrolein or mixtures or combinations thereof to methacrylic acid is disclosed where the heteropolyacid catalyst includes at least molybdenum (Mo), phosphorus (P), vanadium (V), and a first component including bismuth (Bi) and/or boron (B). The heteropolyacid catalyst can also optionally include a second component including potassium (K), rubidium (Rb), cesium (Cs), and/or thallium (Tl) and optionally a third component including antimony (Sb), cerium (Ce), niobium (Nb), indium (In), iron (Fe), chromium (Cr), cobalt (Co), nickel (Ni), manganese (Mn), arsenic (As), silver (Ag), zinc (Zn), germanium (Ge), gallium (Ga), zirconium (Zr), magnesium (Mg), barium (Ba), lead (Pb), tin (Sn), titanium (Ti), aluminum (Al), silicon (Si), tantalum (Ta), tungsten (W), and/or lanthanum (La). The heteropolyacid catalyst can also include an ammonium-containing compound designed to increase a value of medium pores in the final heteropolyacid catalyst. A method for oxidizing isobutanal to methacrylic acid using the heteropolyacid catalyst is also disclosed.
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