Process for increasing the selectivity of a reaction to convert

Details Process for increasing the selectivity of a reaction to convert Process for increasing the selectivity of a reaction to convert

1999-06-15

2000-10-24

Griffin, Walter D.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

585639, 585640, C07C 100, C07C 120, C07C 132

Patent

active

061370223

ABSTRACT:
Disclosed is a method of making an olefin product from an oxygenate feedstock comprising, contacting the feedstock in a reaction zone containing 15 volume percent or less of a catalyst, preferably a catalyst comprising a silicoaluminophosphate molecular sieve. In order to obtain the desired product content, i.e., an olefin product having a low level of by-products, conversion of the feedstock in the 15 volume percent or less reaction zone should be maintained between 80 wt % and 99 wt % at the conditions effective to convert 100 wt % of the feedstock when the reaction zone contains at least 33 volume percent of the catalyst material.

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