Method of making a gas separation molecular sieve membrane
AssigneeShell Oil Company
InventorsBrendan Dermot Murray, Paul Jason Williams
Life of this patent
Estimating the term…
Abstract
A method of preparing a supported gas separation membrane, comprising: preparing crystalline seeds from a synthesis mixture comprising an aluminum source, a phosphorous source, a silicon source, at least one organic templating agent and water; applying the seeds to a porous support to produce a seeded porous support; contacting the seeded porous support with a synthesis gel under hydrothermal synthesis conditions to produce a coated porous support; and calcining the coated porous support is described. A supported gas separation membrane made by this method is also described.
Claims9
A method of preparing a supported gas separation membrane, comprising:
- a. preparing crystalline seeds from a synthesis mixture, comprising a first aluminum source, a first phosphorous source, a first silicon source, at least one a first organic templating agent and water, wherein the first aluminum source of the synthesis mixture is aluminum isopropoxide that is less pure than 99.99% aluminum isopropoxide;
- b. applying the seeds to a porous support to produce a seeded porous support;
- c. contacting the seeded porous support with a synthesis gel, comprising a second aluminum source, a second phosphorous source, a second silicon source, a second templating agent, and water wherein the second aluminum source of the synthesis gel is a very pure aluminum source comprising greater than 99.99% aluminum isopropoxide, under hydrothermal synthesis conditions to produce a coated porous support;
- and
- d. calcining the coated porous support.
A supported gas separation membrane made by the method
- of preparing a supported gas separation membrane, comprising:
- a. preparing crystalline seeds from a synthesis mixture, comprising a first aluminum source, a first phosphorous source, a first silicon source, at least one a first organic templating agent and water, wherein the first aluminum source of the synthesis mixture is aluminum isopropoxide that is less pure than 99.99% aluminum isopropoxide;
- b. applying the seeds to a porous support to produce a seeded porous support;
- c. contacting the seeded porous support with a synthesis gel comprising a second aluminum source, a second phosphorous source, a second silicon source, a second templating agent, and water, wherein the second aluminum source of the synthesis gel is a very pure aluminum source comprising greater than 99.99% aluminum isopropoxide, under hydrothermal synthesis conditions to produce a coated porous support;
- and
- d. calcining the coated porous support.
A supported gas separation membrane comprising SAPO-34 crystals produced by the method
- of preparing a supported gas separation membrane, comprising:
- a. preparing crystalline seeds from a synthesis mixture, comprising a first aluminum source, a first phosphorous source, a first silicon source, at least one a first organic templating agent and water, wherein the first aluminum source of the synthesis mixture is aluminum isopropoxide that is less pure than 99.99% aluminum isopropoxide;
- b. applying the seeds to a porous support to produce a seeded porous support;
- c. contacting the seeded porous support with a synthesis gel comprising a second aluminum source, a second phosphorous source, a second silicon source, a second templating agent, and water, wherein the second aluminum source of the synthesis gel is a very pure aluminum source comprising greater than 99.99% aluminum isopropoxide, under hydrothermal synthesis conditions to produce a coated porous support;
- and
- d. calcining the coated porous support.
Dependencies are inferred from the claim text.