W.r. Grace & Co. -conn.

Philip Stephen Deitz

Wu-Cheng Cheng

Xinjin Zhao

Michael Scott Ziebarth

Terry G Roberie

A catalyst composition suitable for reacting hydrocarbons, e.g., conversion processes such as fluidized catalytic cracking (FCC) of hydrocarbons, comprises attrition resistant particulate having a high level (30-85%) of stabilized zeolites having a constraint index of 1 to 12. The stabilized zeolite is bound by a phosphorous compound, alumina and optional binders wherein the alumina added to make the catalyst is about 10% by weight or less and the molar ratio of phosphorous (PO) to total alumina is sufficient to obtain an attrition index of about 20 or less. The composition can be used as a catalyst per se or as additive catalyst to a conventional catalyst and is especially suitable for enhancing yields of light olefins, and particularly ethylene, produced during conversion processes.

High zeolite content and attrition resistant catalyst, methods for preparing the same and catalyzed processes therewith

A catalyst useful in cracking of hydrocarbon feedstock comprising particulate material composed of at least 70 weight percent zeolite and the remainder substantially composed of silica sol, alumina sol or mixtures thereof; wherein the particulate material has a kinetic conversion activity of at least about 3; and compositions for fluid catalytic cracking of petroleum feedstock comprising said catalyst and a second particulate material having a kinetic conversion activity of less than 3 wherein said catalyst composition having a kinetic conversion activity of at least about 2.

Zeolite based catalyst of ultra-high kinetic conversion activity

A catalyst suitable for use in fluid catalytic cracking of petroleum feedstock in the form of particulate of crystalline zeolite having a coating on it6s surface comprising bayerite phase alumina.

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Baltimore, MD, United States of America

Philip Stephen Deitz