Production of catalysts for olefin conversion
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United States of America Patent
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-
Jun 10, 2008
Grant Date -
Jan 27, 2005
app pub date -
Oct 23, 2003
filing date -
Dec 5, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for producing a catalyst for olefin cracking, the process comprising the steps of providing an MFI-type crystalline silicate catalyst, heating the catalyst in steam to remove aluminum from the crystalline silicate framework and extracting aluminum from the catalyst by contacting the catalyst with a complexing agent for aluminum to remove from pores of the framework aluminum deposited therein during the steaming step thereby to increase the silicon/aluminum atomic ratio of the catalyst; and calcining the catalyst at elevated temperature.
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