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US 11,344,874 B2Granted
Methods for reacting chemical streams with catalysts comprising silica, alumina, and tungsten
AssigneeSaudi Arabian Oil Company
InventorsBrian Hanna, Michele Ostraat
Life of this patent
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Abstract
One or more embodiments presently disclosed is directed to a method for reacting a chemical stream which may include contacting the chemical stream with a catalyst to produce a product stream. The catalyst may include alumina, silica, and a catalytically active compound such as tungsten.
Claims16
A method for reacting a chemical stream, the method comprising:
- contacting the chemical stream with a catalyst to produce a product stream, wherein the chemical stream comprises at least 2-butene and the product stream comprises at least propylene which is the result of both isomerization and metathesis of at least the 2-butene;
- wherein the contacting of the chemical stream with the catalyst is at a temperature of less than or equal to 500° C.;
- and
- the catalyst comprises:
- a plurality of catalyst support particles comprising from 0.1 weight percent to 5 weight percent alumina and from 95 weight percent to 99.9 weight percent silica based on the total weight of the catalyst support particles;
- and
- a catalytically active compound deposited onto surfaces of the plurality of catalyst support particles, the surfaces of the plurality of catalyst support particles being accessible to gases and vapors, wherein the catalytically active compound comprises tungsten and the catalytically active compound is deposited on from 1% to 50% of the surfaces of the catalyst support particles that are accessible to gases and vapors.
4 more elements
A method for reacting a chemical stream, the method comprising:
- contacting the chemical stream with a catalyst to produce a product stream, wherein the chemical stream comprises at least 2-butene and the product stream comprises at least propylene which is the result of both isomerization and metathesis of at least the 2-butene;
- wherein the contacting of the chemical stream with the catalyst is at a temperature of less than or equal to 500° C.;
- and
- the catalyst comprises:
- a plurality of catalyst support particles comprising from 0.1 weight percent to 5 weight percent alumina and from 95 weight percent to 99.9 weight percent silica based on the total weight of the catalyst support particles;
- and
- a catalytically active compound deposited onto surfaces of the plurality of catalyst support particles, the surfaces of the plurality of catalyst support particles being accessible to gases and vapors, wherein the catalytically active compound comprises tungsten and the catalytically active compound is deposited on from 1% to 50% of the surfaces of the catalyst support particles that are accessible to gases and vapors;
- wherein the tungsten is not dispersed throughout the catalyst support particles.
5 more elements
Dependencies are inferred from the claim text.