Synthesis of molecular sieve catalysts
AssigneeExxonMobil Chemical Patents Inc.
InventorsStephen N. Vaughn, Luc R. M. Martens, Keith H. Kuechler, Albert E. Schweizer
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Abstract
Disclosed is a molecular sieve catalyst which contains molecular sieve-containing attrition particles and virgin molecular sieve, the attrition particles having been recycled from a catalyst manufacture process or from a reaction system. The catalyst can be used in a variety of catalytic reaction processes. A desired process is making olefins from an oxygenate feedstock. The recovery and use of the attrition particles in the catalyst is beneficial in minimizing waste, thereby reducing problems relating to both environmental and economic constraints.
Claims31
A method of making olefins from an oxygenate feedstock, comprising
- providing a catalyst composition containing molecular sieve-containing catalyst attrition particles, virgin molecular sieve, and binder;
- and
- contacting the catalyst composition with oxygenate to form an olefin product.
A method of making olefins from an oxygenate feedstock, comprising:
- recovering molecular sieve-containing attrition particles from a process unit;
- mixing at least 10% of the recovered molecular sieve-containing attrition particles with virgin molecular sieve components;
- compositing the mixture to form a catalyst composition;
- and
- contacting the catalyst composition with oxygenate to form an olefin product.
Dependencies are inferred from the claim text.