The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 11, 2025
Filed:
Jul. 08, 2020
Applicant:
Clariant International Ltd, Muttenz, CH;
Inventors:
Assignee:
CLARIANT INTERNATIONAL LTD, Muttenz, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J 37/18 (2006.01); B01J 23/745 (2006.01); B01J 37/08 (2006.01); C01C 1/04 (2006.01); G01N 21/75 (2006.01);
U.S. Cl.
CPC ...
B01J 37/18 (2013.01); B01J 23/745 (2013.01); B01J 37/08 (2013.01); C01C 1/0411 (2013.01); G01N 21/75 (2013.01);
Abstract
Disclosed is a process whereby completed catalysts can be produced from the iron oxides, and these catalysts can be activated and employed directly after activation for ammonia synthesis from synthesis gas, comprising for example a mixture of nitrogen and hydrogen. A process is also disclosed to produce pre-reduced catalyst precursors, which are first reduced under controlled conditions and subsequently passivated in an oxidizing atmosphere, before they are used in ammonia synthesis as catalysts. These pre-reduced catalysts can be activated significantly more quickly and under milder conditions than the iron oxides.