US 12,064,727 B2
Transition metal/zeolite SCR catalysts
Paul Joseph Andersen, Audubon, PA (US); John Leonello Casci, Cleveland (GB); Hai-Ying Chen, Wayne, PA (US); Jillian Elaine Collier, Reading (GB); Joseph Michael Fedeyko, Wayne, PA (US); Rodney Kok Shin Foo, Nivelles (BE); and Raj Rao Rajaram, Reading (GB)
Assigned to JOHNSON MATTHEY PUBLIC LIMITED COMPANY, London (GB)
Filed by Johnson Matthey Public Limited Company, London (GB)
Filed on Sep. 12, 2022, as Appl. No. 17/931,415.
Application 17/931,415 is a continuation of application No. 15/991,565, filed on May 29, 2018, granted, now 11,478,748.
Application 15/991,565 is a continuation of application No. 15/252,376, filed on Aug. 31, 2016, abandoned.
Application 15/252,376 is a continuation of application No. 14/587,613, filed on Dec. 31, 2014, abandoned.
Application 14/587,613 is a continuation of application No. 13/567,692, filed on Aug. 6, 2012, abandoned.
Application 13/567,692 is a continuation of application No. 13/164,150, filed on Jun. 20, 2011, granted, now 8,603,432, issued on Dec. 10, 2013.
Application 13/164,150 is a continuation of application No. 12/987,593, filed on Jan. 10, 2011, abandoned.
Application 12/987,593 is a continuation of application No. 12/597,707, abandoned, previously published as PCT/GB2008/001451, filed on Apr. 24, 2008.
Claims priority of application No. PCT/GB2007/050216 (WO), filed on Apr. 26, 2007.
Prior Publication US 2023/0001353 A1, Jan. 5, 2023
Int. Cl. B01D 53/94 (2006.01); B01D 53/56 (2006.01); B01D 53/86 (2006.01); B01J 29/00 (2006.01); B01J 29/06 (2006.01); B01J 29/064 (2006.01); B01J 29/072 (2006.01); B01J 29/076 (2006.01); B01J 29/46 (2006.01); B01J 29/56 (2006.01); B01J 29/76 (2006.01); B01J 29/80 (2006.01); B01J 29/83 (2006.01); B01J 29/85 (2006.01); B01J 35/56 (2024.01); C01B 39/38 (2006.01); C01B 39/46 (2006.01); C01B 39/54 (2006.01); B01J 29/72 (2006.01); B01J 29/87 (2006.01)
CPC B01D 53/9418 (2013.01) [B01D 53/565 (2013.01); B01D 53/8628 (2013.01); B01D 53/9431 (2013.01); B01D 53/945 (2013.01); B01J 29/005 (2013.01); B01J 29/061 (2013.01); B01J 29/064 (2013.01); B01J 29/072 (2013.01); B01J 29/076 (2013.01); B01J 29/46 (2013.01); B01J 29/56 (2013.01); B01J 29/76 (2013.01); B01J 29/7615 (2013.01); B01J 29/763 (2013.01); B01J 29/80 (2013.01); B01J 29/83 (2013.01); B01J 29/85 (2013.01); B01J 35/56 (2024.01); C01B 39/38 (2013.01); C01B 39/46 (2013.01); C01B 39/54 (2013.01); B01D 2251/2062 (2013.01); B01D 2251/2067 (2013.01); B01D 2255/2065 (2013.01); B01D 2255/20738 (2013.01); B01D 2255/20761 (2013.01); B01D 2255/2092 (2013.01); B01D 2255/30 (2013.01); B01D 2255/50 (2013.01); B01D 2255/502 (2013.01); B01D 2255/504 (2013.01); B01J 2029/062 (2013.01); B01J 29/72 (2013.01); B01J 29/87 (2013.01); B01J 2229/18 (2013.01); B01J 2229/183 (2013.01); B01J 2229/36 (2013.01); Y02A 50/20 (2018.01); Y02C 20/10 (2013.01); Y02T 10/12 (2013.01)] 13 Claims
 
1. A catalyst composition for treating exhaust gas comprising:
a. a small pore first aluminosilicate molecular sieve having a silica-to-alumina ratio of about 8 to about 150, having a first framework selected from AEI, CHA, and AFX, and containing from 0.1 to 10 wt % of Cu, based on the total weight of the molecular sieve, and
b. a second small pore aluminosilicate molecular sieve having a silica-to-alumina ratio of about 8 to about 150, having a second framework selected from AEI, CHA, and AFX, and containing from 0.1 to 10 wt % of Fe, based on the total weight of the molecular sieve,
wherein the catalyst is effective to promote the reaction of NH3 with NOx to form nitrogen and water, selectively.