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Title: Synthesis of an un-supported, high-flow ZSM-22 zeolite membrane

Abstract

Novel methods for synthesizing wholly un-supported, high-flow catalytic membranes consisting of 100% crystalline ZSM-22 crystals with no binder phase, having sufficient porosity to allow high Weight Hourly Space Velocities of feedstock to pass through without generating back pressure. The ZSM-22 membranes perform favorably to existing bulk ZSM-22 catalysts (e.g., via 1-butene conversion and selectivity). The method of membrane synthesis, based on Vapor Phase Transport, allows free-standing, binder-less membranes to be fabricated in varied geometries and sizes so that membranes can be tailor-made for particular geometries applications. The ZSM-22 precursor gel may be consolidated into a semi-cohesive body prior to vapor phase crystallization, for example, by uniaxial pressing. These crystalline membranes may be modified by ion exchange, pore ion exchange, framework exchange, synthesis modification techniques to incorporate other elements into the framework, such as K, H, Mg, Zn, V, Ga, and Pt.

Inventors:
 [1];  [1]
  1. Albuquerque, NM
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
908239
Patent Number(s):
7119245
Application Number:
10/280,252
Assignee:
Sandia Corporation (Albuquerque, NM)
Patent Classifications (CPCs):
C - CHEMISTRY C07 - ORGANIC CHEMISTRY C07C - ACYCLIC OR CARBOCYCLIC COMPOUNDS
B - PERFORMING OPERATIONS B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL B01D - SEPARATION
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Thoma, Steven G, and Nenoff, Tina M. Synthesis of an un-supported, high-flow ZSM-22 zeolite membrane. United States: N. p., 2006. Web.
Thoma, Steven G, & Nenoff, Tina M. Synthesis of an un-supported, high-flow ZSM-22 zeolite membrane. United States.
Thoma, Steven G, and Nenoff, Tina M. Tue . "Synthesis of an un-supported, high-flow ZSM-22 zeolite membrane". United States. https://www.osti.gov/servlets/purl/908239.
@article{osti_908239,
title = {Synthesis of an un-supported, high-flow ZSM-22 zeolite membrane},
author = {Thoma, Steven G and Nenoff, Tina M},
abstractNote = {Novel methods for synthesizing wholly un-supported, high-flow catalytic membranes consisting of 100% crystalline ZSM-22 crystals with no binder phase, having sufficient porosity to allow high Weight Hourly Space Velocities of feedstock to pass through without generating back pressure. The ZSM-22 membranes perform favorably to existing bulk ZSM-22 catalysts (e.g., via 1-butene conversion and selectivity). The method of membrane synthesis, based on Vapor Phase Transport, allows free-standing, binder-less membranes to be fabricated in varied geometries and sizes so that membranes can be tailor-made for particular geometries applications. The ZSM-22 precursor gel may be consolidated into a semi-cohesive body prior to vapor phase crystallization, for example, by uniaxial pressing. These crystalline membranes may be modified by ion exchange, pore ion exchange, framework exchange, synthesis modification techniques to incorporate other elements into the framework, such as K, H, Mg, Zn, V, Ga, and Pt.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2006},
month = {10}
}

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Works referenced in this record:

Synthesis and characterization of a pure zeolitic membrane
journal, February 1992


Growth Process of ZSM-5 Zeolite Film
journal, January 1992


Vapor phase transport synthesis of un-supported ZSM-22 catalytic membranes
journal, December 2001


Dealumination of Mg-ZSM-22 and its use in the skeletal isomerization of 1-butene to isobutene
journal, March 1998


Synthesis of defect-free zeolite-alumina composite membranes by a vapor-phase transport method
journal, December 1996


Vapor phase transport synthesis of zeolites from sol–gel precursors
journal, December 2000


Synthesis of membranes of zeolites ZSM-5 and ZSM-35 by the vapour phase method
journal, January 1992


Gas permeation through zeolite-alumina composite membranes
journal, January 1997


Catalytic activity of a zeolite disc synthesized through solid-state reactions
journal, May 1998