Title:
Methods for Producing Unsaturated Aldehydes and / or Unsaturated Carboxylic Acids
Document Type and Number:
Japanese Patent JP6294883
Kind Code:
B2
Abstract:
Provided is a method capable of producing acrolein and/or acrylic acid, or methacrolein and/or methacrylic acid, stably in a high yield over a long period of time advantageously even in a high-load reaction. The method is a method in which when preparing two or more kinds of catalysts having different formulations and stacking two or more layers in the axial direction of the tube, the catalysts are filled in such a manner that not only the component amount of bismuth relative to molybdenum decreases from the gas inlet side toward the gas outlet side, but also the component amount of iron relative to molybdenum increases from the gas inlet side toward the gas outlet side.
Inventors:
Yuta Nakazawa
Kurakami Tatsuhiko
Shiraishi Kazuo
Kurakami Tatsuhiko
Shiraishi Kazuo
Application Number:
JP2015527328A
Publication Date:
March 14, 2018
Filing Date:
July 17, 2014
Export Citation:
Assignee:
NIPPON KAYAKU KABUSHIKI KAISHA
International Classes:
C07C27/14; B01J23/887; B01J35/02; C07C45/35; C07C47/22; C07C51/21; C07C57/05
Domestic Patent References:
| JP2001048817A | ||||
| JP9202741A |
Attorney, Agent or Firm:
Shinei Patent Office
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