Catalyst – solid sorbent – or support therefor: product or process – Zeolite or clay – including gallium analogs – And additional al or si containing component
Reexamination Certificate
2001-11-27
2004-07-13
Silverman, Stanley S. (Department: 1754)
Catalyst, solid sorbent, or support therefor: product or process
Zeolite or clay, including gallium analogs
And additional al or si containing component
Reexamination Certificate
active
06762143
ABSTRACT:
BACKGROUND
1. Field of the Invention
The present disclosure is related to catalyst material containing zeolite embedded in a catalyst support, and particularly to a microporous zeolite embedded in a mesoporous support.
2. Background of the Art
Most of today's hydrocarbon processing technologies is based on zeolite catalysts. Zeolite catalysts are well known in the art and possess well-arranged pore systems with uniform pore sizes. However, these materials tend to possess either only micropores or only mesopores. Micropores are defined as pores having a diameter of less than about 2 nm. Mesopores are defined as pores having a diameter ranging from about 2 nm to about 50 nm.
Because such hydrocarbon processing reactions are mass-transfer limited, a catalyst with ideal pore size will facilitate transport of the reactants to active catalyst sites and transport of the products out of the catalyst.
SUMMARY OF THE INVENTION
A material useful in catalytic processing of hydrocarbons is provided herein. The material comprises a zeolite, and a porous inorganic oxide which includes at least 97 volume percent mesopores based on the micropores and mesopores of the inorganic oxide. The zeolite is preferably a microporous zeolite such as for example, zeolite beta, zeolite Y, or ZSM-5. A method for making and method for using the material are described herein.
The catalytic material described herein advantageously facilitates the transport of reactants to active catalyst sites and is about 5 times more active than the zeolite used alone.
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Jansen Jacobus Cornelius
Koegler Johannes Hendrik
Maschmeyer Thomas
Shan Zhiping
Yeh Chuen Y.
ABB Lummus Global Inc.
Dilworth & Barrese LLP
Medina Maribel
Silverman Stanley S.
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