B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 29/48 (2006.01) B01J 21/06 (2006.01) B01J 21/12 (2006.01) B01J 23/10 (2006.01) B01J 23/28 (2006.01) B01J 29/035 (2006.01) B01J 32/00 (2006.01) B01J 37/00 (2006.01) C10G 11/04 (2006.01) C10G 11/05 (2006.01) C10G 35/095 (2006.01)
Patent
CA 2369318
Provided herein are the hybrid catalysts used in the deep catalytic cracking of petroleum naphthas or other hydrocarbon feedstocks for the selective production of light olefins, in particular ethylene and propylene. The hybrid catalysts of this invention contain a chemically treated microporous crystalline silicate such as the pentasil-type silicalite, a mesoporous silica-alumina cocatalyst, into which may be incorporated aluminium oxide, molydenum oxide or a mixture of aluminum and molydenum oxides, and an inorganic binder such as bentonite clay. These novel catalysts show several advantages with respect to the classical steam (thermal) cracking : i) higher combined production of ethylene and propylene; ii) lower ethylenel propylene ratio; iii) much lower production of methane ; iv) much lower reaction temperature resulting in significant energy savings; v) easy in-situ regeneration using air as oxidant; vi) lower carbon dioxide and other volatile oxides emitted during the regeneration phase.
Goudreau Gage Dubuc
Le Van Mao Raymond
Universite Concordia
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