US 12,390,797 B2
Catalyst for CO2 methanation reaction having high activity and long term stability and process thereof
Ganapati Dadasaheb Yadav, Mumbai (IN); Ashish Dilip Shejale, Mumbai (IN); Radhika Sadashiv Malkar, Mumbai (IN); Sanjeev Katti, Laxmi Nagar (IN); and Damaraju Parvatalu, Laxmi Nagar (IN)
Assigned to ONGC ENERGY CENTRE TRUST, Laxmi Nagar (IN); and INSTITUTE OF CHEMICAL TECHNOLOGY, Mumbai (IN)
Appl. No. 17/796,068
Filed by Institute of Chemical Technology, Mumbai (IN); and ONGC Energy Centre Trust, Laxmi Nagar (IN)
PCT Filed Jan. 21, 2021, PCT No. PCT/IN2021/050061
§ 371(c)(1), (2) Date Jul. 28, 2022,
PCT Pub. No. WO2021/152614, PCT Pub. Date Aug. 5, 2021.
Claims priority of application No. 202021004464 (IN), filed on Jan. 31, 2020.
Prior Publication US 2023/0108996 A1, Apr. 6, 2023
Int. Cl. B01J 23/78 (2006.01); B01J 23/10 (2006.01); B01J 23/755 (2006.01); B01J 35/61 (2024.01); B01J 35/63 (2024.01); B01J 35/64 (2024.01); B01J 37/00 (2006.01); B01J 37/02 (2006.01); B01J 37/03 (2006.01); B01J 37/04 (2006.01); B01J 37/06 (2006.01); B01J 37/08 (2006.01); C07C 1/12 (2006.01)
CPC B01J 23/78 (2013.01) [B01J 23/10 (2013.01); B01J 23/755 (2013.01); B01J 35/615 (2024.01); B01J 35/617 (2024.01); B01J 35/635 (2024.01); B01J 35/638 (2024.01); B01J 35/647 (2024.01); B01J 37/009 (2013.01); B01J 37/0236 (2013.01); B01J 37/035 (2013.01); B01J 37/04 (2013.01); B01J 37/06 (2013.01); B01J 37/08 (2013.01); C07C 1/12 (2013.01); C07C 2523/78 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A heterogeneous catalyst for selective carbon dioxide methanation reaction having high activity and long-term stability (>1000 hours), the catalyst comprising of:
at least one alkali promoter metal,
two active metals and
support for active metals having combination of CeO2-γAl2O3, wherein the heterogeneous catalyst has a surface area between 200 and 800 (m2/g), pore volume between 0.5 and 2.5 (cm3/g) and average pore diameter between 5 and 30 nm.