Fluid-bed catalyst for the preparation of ethylene and propylene by catalytic cracking
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United States of America Patent
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Issued Date -
Feb 22, 2007
app pub date -
Aug 15, 2006
filing date -
Aug 15, 2005
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Abandoned
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Abstract
The present invention relates to a fluid-bed catalyst for the preparation of ethylene and propylene by catalytic cracking. The main technical problems to be solved are a relatively high reaction temperature, and low activities and poor selectivities of the catalyst at a low temperature, during the reaction for preparing ethylene and propylene by catalytically cracking naphtha. The technical solution of the catalyst is a composition of the chemical formula Mo.sub.1.0V.sub.aA.sub.bB.sub.cC.sub.dO.sub.X based on stoichiometric ratio. It has satisfactorily solved the above-mentioned problems, and is useful in the industrial production of ethylene and propylene by catalytically cracking naphtha.
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