Infiltration of Microporous Activated Charcoal by Pyrolysis of CH4 and Its Effect on Enhancement of Resistance against Oxidation
Pores within activated charcoal (A.C.) were infiltrated by pyrolitic carbon derived from thermal decomposition of CH4. The infiltrated activated charcoal showed an increase in resistance against oxidation with CO2. To elucidate the mechanism of this effect, the pore size distribution of macropores,...
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| Veröffentlicht in: | ISIJ International 1997/08/15, Vol.37(8), pp.738-747 |
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| creator | Shigeno, Yoshihito Evans, James William Yoh, Itsumei |
| description | Pores within activated charcoal (A.C.) were infiltrated by pyrolitic carbon derived from thermal decomposition of CH4. The infiltrated activated charcoal showed an increase in resistance against oxidation with CO2. To elucidate the mechanism of this effect, the pore size distribution of macropores, mesopores and micropores including submicropores were characterized for the original A.C., infiltrated A.C., oxidized A.C. and A.C. oxidized after infiltration, respectively. It was found that the infiltration decreased the volume and the surface area of pores, particularly the surface area of micropores. When oxidized, the carbon which deposited in macropores is almost burned but that in meso- and micropores is only partly burned; The ratio of increase in surface area of the infiltrated sample is smallest for the micropores. From these experimental results, it is deducible that the deposited carbon in micropores plays the major role for blocking CO2 intruding, thereby the resistance against oxidation is enhanced. |
| doi_str_mv | 10.2355/isijinternational.37.738 |
| format | Article |
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The infiltrated activated charcoal showed an increase in resistance against oxidation with CO2. To elucidate the mechanism of this effect, the pore size distribution of macropores, mesopores and micropores including submicropores were characterized for the original A.C., infiltrated A.C., oxidized A.C. and A.C. oxidized after infiltration, respectively. It was found that the infiltration decreased the volume and the surface area of pores, particularly the surface area of micropores. When oxidized, the carbon which deposited in macropores is almost burned but that in meso- and micropores is only partly burned; The ratio of increase in surface area of the infiltrated sample is smallest for the micropores. From these experimental results, it is deducible that the deposited carbon in micropores plays the major role for blocking CO2 intruding, thereby the resistance against oxidation is enhanced.</description><identifier>ISSN: 0915-1559</identifier><identifier>EISSN: 1347-5460</identifier><identifier>DOI: 10.2355/isijinternational.37.738</identifier><language>eng</language><publisher>Tokyo: The Iron and Steel Institute of Japan</publisher><subject>activated charcoal ; Applied sciences ; chemical vapor infiltration ; Coal, coke, coking ; CVI ; Exact sciences and technology ; Iron and steel making ; mesopore ; Metals. Metallurgy ; methane ; micropore ; pore ; Production of metals ; pyrolysis ; submicropore</subject><ispartof>ISIJ International, 1997/08/15, Vol.37(8), pp.738-747</ispartof><rights>The Iron and Steel Institute of Japan</rights><rights>1997 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c577t-851c03cded7bba7536904a613a35cf281d44f40d3ad9f3a85697c5cf5ba1deed3</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,1883,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2766090$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Shigeno, Yoshihito</creatorcontrib><creatorcontrib>Evans, James William</creatorcontrib><creatorcontrib>Yoh, Itsumei</creatorcontrib><title>Infiltration of Microporous Activated Charcoal by Pyrolysis of CH4 and Its Effect on Enhancement of Resistance against Oxidation</title><title>ISIJ International</title><addtitle>ISIJ Int.</addtitle><description>Pores within activated charcoal (A.C.) were infiltrated by pyrolitic carbon derived from thermal decomposition of CH4. The infiltrated activated charcoal showed an increase in resistance against oxidation with CO2. To elucidate the mechanism of this effect, the pore size distribution of macropores, mesopores and micropores including submicropores were characterized for the original A.C., infiltrated A.C., oxidized A.C. and A.C. oxidized after infiltration, respectively. It was found that the infiltration decreased the volume and the surface area of pores, particularly the surface area of micropores. When oxidized, the carbon which deposited in macropores is almost burned but that in meso- and micropores is only partly burned; The ratio of increase in surface area of the infiltrated sample is smallest for the micropores. From these experimental results, it is deducible that the deposited carbon in micropores plays the major role for blocking CO2 intruding, thereby the resistance against oxidation is enhanced.</description><subject>activated charcoal</subject><subject>Applied sciences</subject><subject>chemical vapor infiltration</subject><subject>Coal, coke, coking</subject><subject>CVI</subject><subject>Exact sciences and technology</subject><subject>Iron and steel making</subject><subject>mesopore</subject><subject>Metals. Metallurgy</subject><subject>methane</subject><subject>micropore</subject><subject>pore</subject><subject>Production of metals</subject><subject>pyrolysis</subject><subject>submicropore</subject><issn>0915-1559</issn><issn>1347-5460</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1997</creationdate><recordtype>article</recordtype><recordid>eNplkM1KAzEUhYMoWGrfIQu3U5MmmcwsS6laUKqi6-FOfmpkmilJFLvz0c200o2bXMj9zj2cgxCmZDpjQty46D6cTyZ4SK730E2ZnEpWnaERZVwWgpfkHI1ITUVBhagv0SRG1xIy4xVnlI3Qz8pb16Vw0OPe4kenQr_rQ_8Z8Vwl9wXJaLx4h6B66HC7x0_70Hf76OKAL-45Bq_xKkW8tNaohPOdpX8Hr8zW-DRALybTafjBsAHnY8Lrb6cPnlfowkIXzeRvjtHb7fJ1cV88rO9Wi_lDoYSUqagEVYQpbbRsW5CClTXhUFIGTCg7q6jm3HKiGejaMqhEWUuVN6IFqo3RbIyq490cL8ZgbLMLbgth31DSDGU2_8psmGxymVl6fZTuICrobMhJXDzpZ7IsSU0y9nzEPnLWjTntISSnOvP_Pq2revCojk-2OrEq990Yz34BRXWb5g</recordid><startdate>19970101</startdate><enddate>19970101</enddate><creator>Shigeno, Yoshihito</creator><creator>Evans, James William</creator><creator>Yoh, Itsumei</creator><general>The Iron and Steel Institute of Japan</general><general>Iron and Steel Institute of Japan</general><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19970101</creationdate><title>Infiltration of Microporous Activated Charcoal by Pyrolysis of CH4 and Its Effect on Enhancement of Resistance against Oxidation</title><author>Shigeno, Yoshihito ; Evans, James William ; Yoh, Itsumei</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c577t-851c03cded7bba7536904a613a35cf281d44f40d3ad9f3a85697c5cf5ba1deed3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1997</creationdate><topic>activated charcoal</topic><topic>Applied sciences</topic><topic>chemical vapor infiltration</topic><topic>Coal, coke, coking</topic><topic>CVI</topic><topic>Exact sciences and technology</topic><topic>Iron and steel making</topic><topic>mesopore</topic><topic>Metals. Metallurgy</topic><topic>methane</topic><topic>micropore</topic><topic>pore</topic><topic>Production of metals</topic><topic>pyrolysis</topic><topic>submicropore</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Shigeno, Yoshihito</creatorcontrib><creatorcontrib>Evans, James William</creatorcontrib><creatorcontrib>Yoh, Itsumei</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><jtitle>ISIJ International</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Shigeno, Yoshihito</au><au>Evans, James William</au><au>Yoh, Itsumei</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Infiltration of Microporous Activated Charcoal by Pyrolysis of CH4 and Its Effect on Enhancement of Resistance against Oxidation</atitle><jtitle>ISIJ International</jtitle><addtitle>ISIJ Int.</addtitle><date>1997-01-01</date><risdate>1997</risdate><volume>37</volume><issue>8</issue><spage>738</spage><epage>747</epage><pages>738-747</pages><issn>0915-1559</issn><eissn>1347-5460</eissn><abstract>Pores within activated charcoal (A.C.) were infiltrated by pyrolitic carbon derived from thermal decomposition of CH4. The infiltrated activated charcoal showed an increase in resistance against oxidation with CO2. To elucidate the mechanism of this effect, the pore size distribution of macropores, mesopores and micropores including submicropores were characterized for the original A.C., infiltrated A.C., oxidized A.C. and A.C. oxidized after infiltration, respectively. It was found that the infiltration decreased the volume and the surface area of pores, particularly the surface area of micropores. When oxidized, the carbon which deposited in macropores is almost burned but that in meso- and micropores is only partly burned; The ratio of increase in surface area of the infiltrated sample is smallest for the micropores. From these experimental results, it is deducible that the deposited carbon in micropores plays the major role for blocking CO2 intruding, thereby the resistance against oxidation is enhanced.</abstract><cop>Tokyo</cop><pub>The Iron and Steel Institute of Japan</pub><doi>10.2355/isijinternational.37.738</doi><tpages>10</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | ISIJ International, 1997/08/15, Vol.37(8), pp.738-747 |
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| language | eng |
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| source | J-STAGE (Free - Japanese); Free Full-Text Journals in Chemistry; EZB Electronic Journals Library |
| subjects | activated charcoal Applied sciences chemical vapor infiltration Coal, coke, coking CVI Exact sciences and technology Iron and steel making mesopore Metals. Metallurgy methane micropore pore Production of metals pyrolysis submicropore |
| title | Infiltration of Microporous Activated Charcoal by Pyrolysis of CH4 and Its Effect on Enhancement of Resistance against Oxidation |
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