| US 7,579,297 B2 | ||
| Method for producing catalyst for production of unsaturated aldehyde and unsaturated carboxylic acid | ||
| Masahide Kondo, Hiroshima (Japan); Hiroyuki Naitou, Hiroshima (Japan); and Toru Kuroda, Hiroshima (Japan) | ||
| Assigned to Mitsubishi Rayon Co., Ltd., Tokyo (Japan) | ||
| Appl. No. 10/582,859 PCT Filed Dec. 09, 2004, PCT No. PCT/JP2004/018402 § 371(c)(1), (2), (4) Date Jun. 14, 2006, PCT Pub. No. WO2005/058497, PCT Pub. Date Jun. 30, 2005. |
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| Claims priority of application No. 2003-421279 (JP), filed on Dec. 18, 2003. | ||
| Prior Publication US 2007/0149809 A1, Jun. 28, 2007 | ||
| Int. Cl. B01J 23/18 (2006.01); B01J 23/28 (2006.01); B01J 23/31 (2006.01); B01J 23/843 (2006.01); B01J 23/881 (2006.01); B01J 23/887 (2006.01); B01J 21/06 (2006.01); C07C 51/235 (2006.01); C07C 51/16 (2006.01); C07C 45/27 (2006.01) | ||
| U.S. Cl. 502—311 [502/255; 560/211; 562/534; 562/535; 562/546; 562/547; 568/400; 568/449; 568/491] | 3 Claims |
| 1. A method for producing a catalyst comprising at least molybdenum, bismuth and iron for use in producing an unsaturated
aldehyde and an unsaturated carboxylic acid through gas-phase catalytic oxidation of propylene, isobutylene, tertiary butyl
alcohol or methyl tertiary butyl ether with molecular oxygen, comprising the steps of:
kneading particles comprising catalyst components, an organic binder and a liquid to form a kneaded mixture; and
extrusion molding the kneaded mixture,
wherein the organic binder comprises at least a high-viscosity organic binder having a viscosity of from 5,000 mPa·s to 25,000
mPa·s and a low-viscosity organic binder having a viscosity of from 10 mPa·s to less than 5,000 mPa·s, wherein viscosity is
measured with a 1% by mass water solution or dispersion of the binder at 20° C.
|