Synthesis of zeolite nanoreactors

The aim of the project was to develop a novel procedure to prepare zeolite core-shell nanostructured materials and investigate their catalytic properties. The novelty of these materials is that the shell is made from zeolite materials while the core is made of a catalytic material. This type of mate...

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Main Author: Rajendran, Arvind
Other Authors: School of Chemical and Biomedical Engineering
Format: Research Report
Language:English
Published: 2012
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Online Access:http://hdl.handle.net/10356/48025
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-480252023-03-03T15:30:51Z Synthesis of zeolite nanoreactors Rajendran, Arvind School of Chemical and Biomedical Engineering DRNTU::Engineering::Nanotechnology The aim of the project was to develop a novel procedure to prepare zeolite core-shell nanostructured materials and investigate their catalytic properties. The novelty of these materials is that the shell is made from zeolite materials while the core is made of a catalytic material. This type of materials represent intensification of two separate operations of separation and reaction on a single particle. They are expected to find key applications in catalysis, chemical sensors etc. Within the frame of this project, several novel structures were developed and the performance was evaluated. Of the several materials that were investigated two showed significant potential for further development. The first study involved the successful development of a continuous and c-oriented ZIF-69 membranes on porous -alumina substrates by an in situ solvothermal method. Single-gas permeation experiments through ZIF-69 membranes were carried out by a vacuum method at room temperature using H2, CH4, CO, CO2 and SF6, respectively. The permeances were in the order of H2 >CO2 >CH4 >CO>SF6. The separation of CO2/CO gas mixture was investigated by gas chromatograph (GC) and the permselectivity of CO2/CO was 3.5±0.1 with CO2 permeance of 3.6±0.3×10−8 molm−2 s−1 Pa−1 at room temperature. The second study dealt with the report the synthesis of micrometer-sized core-shell particles containing a catalyst core and a thin permselective zeolite shell and their application as a micromembrane reactor for the selective hydrogenation of the 1-hexene and 3,3-dimethyl-1-butene isomers. The bare catalyst, which was made from porous silica loaded with catalytically active nickel, showed no reactant selectivity between hexene isomers, but the core-shell particles showed high selectivities up to 300 for a 1-hexene conversion of 90%. Finally the potential of these materials for the selective adsorption of xylene isomers was also evaluated. RG 26/07 2012-02-14T03:19:37Z 2012-02-14T03:19:37Z 2009 2009 Research Report http://hdl.handle.net/10356/48025 en 26 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Nanotechnology
spellingShingle DRNTU::Engineering::Nanotechnology
Rajendran, Arvind
Synthesis of zeolite nanoreactors
description The aim of the project was to develop a novel procedure to prepare zeolite core-shell nanostructured materials and investigate their catalytic properties. The novelty of these materials is that the shell is made from zeolite materials while the core is made of a catalytic material. This type of materials represent intensification of two separate operations of separation and reaction on a single particle. They are expected to find key applications in catalysis, chemical sensors etc. Within the frame of this project, several novel structures were developed and the performance was evaluated. Of the several materials that were investigated two showed significant potential for further development. The first study involved the successful development of a continuous and c-oriented ZIF-69 membranes on porous -alumina substrates by an in situ solvothermal method. Single-gas permeation experiments through ZIF-69 membranes were carried out by a vacuum method at room temperature using H2, CH4, CO, CO2 and SF6, respectively. The permeances were in the order of H2 >CO2 >CH4 >CO>SF6. The separation of CO2/CO gas mixture was investigated by gas chromatograph (GC) and the permselectivity of CO2/CO was 3.5±0.1 with CO2 permeance of 3.6±0.3×10−8 molm−2 s−1 Pa−1 at room temperature. The second study dealt with the report the synthesis of micrometer-sized core-shell particles containing a catalyst core and a thin permselective zeolite shell and their application as a micromembrane reactor for the selective hydrogenation of the 1-hexene and 3,3-dimethyl-1-butene isomers. The bare catalyst, which was made from porous silica loaded with catalytically active nickel, showed no reactant selectivity between hexene isomers, but the core-shell particles showed high selectivities up to 300 for a 1-hexene conversion of 90%. Finally the potential of these materials for the selective adsorption of xylene isomers was also evaluated.
author2 School of Chemical and Biomedical Engineering
author_facet School of Chemical and Biomedical Engineering
Rajendran, Arvind
format Research Report
author Rajendran, Arvind
author_sort Rajendran, Arvind
title Synthesis of zeolite nanoreactors
title_short Synthesis of zeolite nanoreactors
title_full Synthesis of zeolite nanoreactors
title_fullStr Synthesis of zeolite nanoreactors
title_full_unstemmed Synthesis of zeolite nanoreactors
title_sort synthesis of zeolite nanoreactors
publishDate 2012
url http://hdl.handle.net/10356/48025
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