Dewaxing catalysts and processes employing titanoaluminosilicate molecular sieves
AssigneeUnion Carbide Corporation
InventorsRegis J. Pellet, Frank P. Gortsema, Gary N. Long, Jule A. Rabo
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Abstract
Dewaxing processes for hydrocarbon feedstocks are disclosed using novel catalysts comprising titanoaluminosilicates. The products of the instant dewaxing processes are characterized by lower pour points than the hydrocarbon feedstock.
Claims27
The process for dewaxing a hydrocarbon feedstock comprising contacting the hydrocarbon feedstock with a dewaxing catalyst comprising at least one titanoaluminosilicate (TASO) characterized in its calcined form by an adsorption of isobutane of at least 2 percent by weight at a pressure of 500 torr and a temperature of 20.degree. C. and further characterized in its calcined form by an adsorption of triethylamine of less than 5 percent by weight at a pressure of 2.6 torr and a temperature of 22.degree. C., the amount of the TASO in the catalyst and the condition of the contacting being effective to cause dewaxing of the hydrocarbon feedstock.
The process for hydrodewaxing a hydrocarbon feedstock to reduce its pour point comprising contacting the hydrocarbon feedstock with a catalyst in the presence of hydrogen wherein the catalyst comprises at least one hydrogenation component and at least one titanoaluminosilicate (TASO) characterized in its calcined form by an adsorption of isobutane of at least 2 percont by weight at a pressure of 500 torr and a temperature of 20.degree. C. and further characterized in its calcined form by an adsorption of triethylamine of less than 5 percent by weight at a pressure of 2.6 torr and a temperature of 22.degree. C., the amount of the TASO in the catalyst and the conditions of the contacting being effective to cause hydrodewaxing.
The process for dewaxing a hydrocarbon feedstock comprising contacting the hydrocarbon feedstock with a dewaxing catalyst comprising at least one titanoaluminosilicate (TASO) selected from the group consisting of TASO-45, TASO-48, TASO-49, LZ-241 and mixtures thereof and characterized in its calcined form by an adsorption of isobutane of at least 2 percent by weight at a pressure of 500 torr and a temperature of 20.degree. C. and further characterized in its calcined form by an adsorption of triethylamine of less than 5 percent by weight at a pressure of 2.6 torr and a temperature of 22.degree. C., the amount of the TASO in the catalyst and the conditions of the contacting being effective to cause dewaxing of the hydrocarbon feedstock.
The process for hydrodewaxing a hydrocarbon feedstock to reduce its pour point comprising contacting the hydrocarbon feedstock with a catalyst in the presence of hydrogen wherein the catalyst comprises at least one hydrogenation component and at least one titanoaluminosilicate (TASO) selected from the group consisting of TASO-45, TASO-48, TASO-49, LZ-241 and mixtures thereof and characterized in its calcined form by an adsorption of isobutane of at least 2 percent by weight at a pressure of 500 torr and a temperature of 20.degree. C. and further characterized in its calcined form by an adsorption of triethylamine of less than 5 percent by weight at a pressure of 2.6 torr and a temperature of 22.degree. C., the amount of the TASO in the catalyst and the conditions of the contacting being effective to cause dewaxing of the hydrodewaxing feedstock.
Dependencies are inferred from the claim text.