Sol-Gel Processed Cobalt-Doped Methylated Silica Membranes Calcined under N 2 Atmosphere: Microstructure and Hydrogen Perm-Selectivity
Methyl-modified, cobalt-doped silica (Co/MSiO ) materials were synthesized by sol-gel technique calcined in N atmospheres, and membranes were made thereof by coating method. The effects of Co/Si molar ratio ( ) on the physical-chemical constructions of Co/MSiO materials and microstructures of Co/MSi...
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creator | Wang, Lunwei Yang, Jing Mu, Ruihua Guo, Yingming Hou, Haiyun |
description | Methyl-modified, cobalt-doped silica (Co/MSiO
) materials were synthesized by sol-gel technique calcined in N
atmospheres, and membranes were made thereof by coating method. The effects of Co/Si molar ratio (
) on the physical-chemical constructions of Co/MSiO
materials and microstructures of Co/MSiO
membranes were systematically investigated. The gas permeance performance and hydrothermal stability of Co/MSiO
membranes were also tested. The results show that the cobalt element in Co/MSiO
material calcined at 400 °C exists not only as Si-O-Co bond but also as Co
O
and CoO crystals. The introduction of metallic cobalt and methyl can enlarge the total pore volume and average pore size of the SiO
membrane. The activation energy (
) values of H
, CO
, and N
for Co/MSiO
membranes are less than those for MSiO
membranes. When operating at a pressure difference of 0.2 MPa and 200 °C compared with MSiO
membrane, the permeances of H
, CO
, and N
for Co/MSiO
membrane with
= 0.08 increased by 1.17, 0.70, and 0.83 times, respectively, and the perm-selectivities of H
/CO
and H
/N
increased by 27.66% and 18.53%, respectively. After being steamed and thermally regenerated, the change of H
permeance and H
perm-selectivities for Co/MSiO
membrane is much smaller than those for MSiO
membrane. |
doi_str_mv | 10.3390/ma14154188 |
format | Article |
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) materials were synthesized by sol-gel technique calcined in N
atmospheres, and membranes were made thereof by coating method. The effects of Co/Si molar ratio (
) on the physical-chemical constructions of Co/MSiO
materials and microstructures of Co/MSiO
membranes were systematically investigated. The gas permeance performance and hydrothermal stability of Co/MSiO
membranes were also tested. The results show that the cobalt element in Co/MSiO
material calcined at 400 °C exists not only as Si-O-Co bond but also as Co
O
and CoO crystals. The introduction of metallic cobalt and methyl can enlarge the total pore volume and average pore size of the SiO
membrane. The activation energy (
) values of H
, CO
, and N
for Co/MSiO
membranes are less than those for MSiO
membranes. When operating at a pressure difference of 0.2 MPa and 200 °C compared with MSiO
membrane, the permeances of H
, CO
, and N
for Co/MSiO
membrane with
= 0.08 increased by 1.17, 0.70, and 0.83 times, respectively, and the perm-selectivities of H
/CO
and H
/N
increased by 27.66% and 18.53%, respectively. After being steamed and thermally regenerated, the change of H
permeance and H
perm-selectivities for Co/MSiO
membrane is much smaller than those for MSiO
membrane.</description><identifier>ISSN: 1996-1944</identifier><identifier>EISSN: 1996-1944</identifier><identifier>DOI: 10.3390/ma14154188</identifier><identifier>PMID: 34361380</identifier><language>eng</language><publisher>Switzerland</publisher><ispartof>Materials, 2021-08, Vol.14 (15)</ispartof><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><orcidid>0000-0002-0038-4345</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/34361380$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Wang, Lunwei</creatorcontrib><creatorcontrib>Yang, Jing</creatorcontrib><creatorcontrib>Mu, Ruihua</creatorcontrib><creatorcontrib>Guo, Yingming</creatorcontrib><creatorcontrib>Hou, Haiyun</creatorcontrib><title>Sol-Gel Processed Cobalt-Doped Methylated Silica Membranes Calcined under N 2 Atmosphere: Microstructure and Hydrogen Perm-Selectivity</title><title>Materials</title><addtitle>Materials (Basel)</addtitle><description>Methyl-modified, cobalt-doped silica (Co/MSiO
) materials were synthesized by sol-gel technique calcined in N
atmospheres, and membranes were made thereof by coating method. The effects of Co/Si molar ratio (
) on the physical-chemical constructions of Co/MSiO
materials and microstructures of Co/MSiO
membranes were systematically investigated. The gas permeance performance and hydrothermal stability of Co/MSiO
membranes were also tested. The results show that the cobalt element in Co/MSiO
material calcined at 400 °C exists not only as Si-O-Co bond but also as Co
O
and CoO crystals. The introduction of metallic cobalt and methyl can enlarge the total pore volume and average pore size of the SiO
membrane. The activation energy (
) values of H
, CO
, and N
for Co/MSiO
membranes are less than those for MSiO
membranes. When operating at a pressure difference of 0.2 MPa and 200 °C compared with MSiO
membrane, the permeances of H
, CO
, and N
for Co/MSiO
membrane with
= 0.08 increased by 1.17, 0.70, and 0.83 times, respectively, and the perm-selectivities of H
/CO
and H
/N
increased by 27.66% and 18.53%, respectively. After being steamed and thermally regenerated, the change of H
permeance and H
perm-selectivities for Co/MSiO
membrane is much smaller than those for MSiO
membrane.</description><issn>1996-1944</issn><issn>1996-1944</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2021</creationdate><recordtype>article</recordtype><recordid>eNpNUN1KwzAYDaK4MXfjA0heIJo0XZt4N6rbhE0H0-uRpF9dJW1Kkgp9AZ_bggqem_MH5-IgdM3oLeeS3jWKpWyRMiHO0JRJmREm0_T8n56geQgfdATnTCTyEk14yjPGBZ2ir4OzZA0W770zEAKUuHBa2UgeXDeaHcTTYFUc5aG2tVFj0mivWgi4UNbU7dj0bQkeP-MEL2PjQncCD_d4VxvvQvS9ib0HrNoSb4bSu3do8R58Qw5gwcT6s47DFbqolA0w_-UZels9vhYbsn1ZPxXLLekYFZGYJBM60YJW-QIYl5wuZKKoUhWVKavyPOFamExRyngG1OQ5lJWuqNaJGT-ifIZufna7XjdQHjtfN8oPx79D-DfRoGOo</recordid><startdate>20210801</startdate><enddate>20210801</enddate><creator>Wang, Lunwei</creator><creator>Yang, Jing</creator><creator>Mu, Ruihua</creator><creator>Guo, Yingming</creator><creator>Hou, Haiyun</creator><scope>NPM</scope><orcidid>https://orcid.org/0000-0002-0038-4345</orcidid></search><sort><creationdate>20210801</creationdate><title>Sol-Gel Processed Cobalt-Doped Methylated Silica Membranes Calcined under N 2 Atmosphere: Microstructure and Hydrogen Perm-Selectivity</title><author>Wang, Lunwei ; Yang, Jing ; Mu, Ruihua ; Guo, Yingming ; Hou, Haiyun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-p108t-c268b2b80f75e13930592a0aaf0941f7723b8c6a00136e0c77edfbf0bb2c54103</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2021</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Wang, Lunwei</creatorcontrib><creatorcontrib>Yang, Jing</creatorcontrib><creatorcontrib>Mu, Ruihua</creatorcontrib><creatorcontrib>Guo, Yingming</creatorcontrib><creatorcontrib>Hou, Haiyun</creatorcontrib><collection>PubMed</collection><jtitle>Materials</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Wang, Lunwei</au><au>Yang, Jing</au><au>Mu, Ruihua</au><au>Guo, Yingming</au><au>Hou, Haiyun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Sol-Gel Processed Cobalt-Doped Methylated Silica Membranes Calcined under N 2 Atmosphere: Microstructure and Hydrogen Perm-Selectivity</atitle><jtitle>Materials</jtitle><addtitle>Materials (Basel)</addtitle><date>2021-08-01</date><risdate>2021</risdate><volume>14</volume><issue>15</issue><issn>1996-1944</issn><eissn>1996-1944</eissn><abstract>Methyl-modified, cobalt-doped silica (Co/MSiO
) materials were synthesized by sol-gel technique calcined in N
atmospheres, and membranes were made thereof by coating method. The effects of Co/Si molar ratio (
) on the physical-chemical constructions of Co/MSiO
materials and microstructures of Co/MSiO
membranes were systematically investigated. The gas permeance performance and hydrothermal stability of Co/MSiO
membranes were also tested. The results show that the cobalt element in Co/MSiO
material calcined at 400 °C exists not only as Si-O-Co bond but also as Co
O
and CoO crystals. The introduction of metallic cobalt and methyl can enlarge the total pore volume and average pore size of the SiO
membrane. The activation energy (
) values of H
, CO
, and N
for Co/MSiO
membranes are less than those for MSiO
membranes. When operating at a pressure difference of 0.2 MPa and 200 °C compared with MSiO
membrane, the permeances of H
, CO
, and N
for Co/MSiO
membrane with
= 0.08 increased by 1.17, 0.70, and 0.83 times, respectively, and the perm-selectivities of H
/CO
and H
/N
increased by 27.66% and 18.53%, respectively. After being steamed and thermally regenerated, the change of H
permeance and H
perm-selectivities for Co/MSiO
membrane is much smaller than those for MSiO
membrane.</abstract><cop>Switzerland</cop><pmid>34361380</pmid><doi>10.3390/ma14154188</doi><orcidid>https://orcid.org/0000-0002-0038-4345</orcidid><oa>free_for_read</oa></addata></record> |
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language | eng |
recordid | cdi_pubmed_primary_34361380 |
source | Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; PubMed Central Open Access; MDPI - Multidisciplinary Digital Publishing Institute; PubMed Central; Free Full-Text Journals in Chemistry |
title | Sol-Gel Processed Cobalt-Doped Methylated Silica Membranes Calcined under N 2 Atmosphere: Microstructure and Hydrogen Perm-Selectivity |
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