Title: Methods for synthesizing microporous crystals and microporous crystal membranes

Abstract

A method of making a microporous crystal material, comprising: a. forming a mixture comprising NaOH, water, and one or more of an aluminum source, a silicon source, and a phosphate source, whereupon the mixture forms a gel; b. heating the gel for a first time period, whereupon a first volume of water is removed from the gel and micoroporous crystal nuclei form, the nuclei having a framework; and c.(if a membrane is to be formed) applying the gel to a solid support seeded with microporous crystals having a framework that is the same as the framework of the nuclei; d. heating the gel for a second time period. during which a second volume of water is added to the gel; wherein the rate of addition of the second volume of water is between about 0.5 and about 2.0 fold the rate of removal of the first volume of water.

Inventors:

Dutta, Prabir; Severance, Michael; Sun, Chenhu

Issue Date:

2017-02-07

Research Org.:

Ohio State Innovation Foundation, Columbus, OH (United States)

Sponsoring Org.:

USDOE

OSTI Identifier:

1343308

Patent Number(s):

9561477

Application Number:

14/194,199

Assignee:

Ohio State Innovation Foundation

Patent Classifications (CPCs):

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

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B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION

B01D67/0051 - {by controlled crystallisation, e,.g. hydrothermal growth}
B01D71/028 - {Molecular sieves, e.g. zeolites, silicalite

B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01J - CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY

B01J2229/60 - Synthesis on support
B01J29/082 - {X-type faujasite}
B01J29/084 - {Y-type faujasite}
B01J29/40 - of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
B01J37/0215 - {Coating}

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B39/02 - Crystalline aluminosilicate zeolites
C01B39/20 - Faujasite type, e.g. type X or Y
C01B39/22 - Type X {
C01B39/24 - Type Y {
C01B39/38 - Type ZSM-5
C01B39/40 - using at least one organic template directing agent
C01B39/54 - Phosphates, e.g. APO or SAPO compounds

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DOE Contract Number:  

FE0007632

Resource Type:

Patent

Resource Relation:

Patent File Date: 2014 Feb 28

Country of Publication:

United States

Language:

English

Subject:

36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY