Effect of pretreatment atmosphere of WO x /SiO 2 catalysts on metathesis of ethylene and 2-butene to propylene
The effect of a gas pretreatment atmosphere (pure N , pure H and mixed H /N ) on the metathesis reaction between ethylene and 2-butene to propylene over calcined and non-calcined WO /SiO catalysts was investigated. The non-calcined catalysts exhibited higher activity than the calcined catalysts unde...
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| Veröffentlicht in: | RSC advances 2018-03, Vol.8 (21), p.11693-11704 |
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| container_title | RSC advances |
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| creator | Gayapan, Krittidech Sripinun, Sirada Panpranot, Joongjai Praserthdam, Piyasan Assabumrungrat, Suttichai |
| description | The effect of a gas pretreatment atmosphere (pure N
, pure H
and mixed H
/N
) on the metathesis reaction between ethylene and 2-butene to propylene over calcined and non-calcined WO
/SiO
catalysts was investigated. The non-calcined catalysts exhibited higher activity than the calcined catalysts under different gas pretreatment atmospheres. The non-calcined catalyst with the use of pure H
pretreatment showed the highest catalytic performances. As revealed by various characterization results from N
physisorption, XRD, XPS, TEM, SEM-EDX, UV-Vis, Raman, H
-TPR, and NH
-TPD techniques, the WO
phase occurring from the H
pretreatment of the non-calcined catalyst played an important role on the high activity of the catalyst. In addition, better tungsten dispersion, higher isolated surface tetrahedral tungsten oxide species, and W
species were obtained on the H
-treated non-calcined WO
/SiO
catalyst. |
| doi_str_mv | 10.1039/c8ra01093e |
| format | Article |
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, pure H
and mixed H
/N
) on the metathesis reaction between ethylene and 2-butene to propylene over calcined and non-calcined WO
/SiO
catalysts was investigated. The non-calcined catalysts exhibited higher activity than the calcined catalysts under different gas pretreatment atmospheres. The non-calcined catalyst with the use of pure H
pretreatment showed the highest catalytic performances. As revealed by various characterization results from N
physisorption, XRD, XPS, TEM, SEM-EDX, UV-Vis, Raman, H
-TPR, and NH
-TPD techniques, the WO
phase occurring from the H
pretreatment of the non-calcined catalyst played an important role on the high activity of the catalyst. In addition, better tungsten dispersion, higher isolated surface tetrahedral tungsten oxide species, and W
species were obtained on the H
-treated non-calcined WO
/SiO
catalyst.</description><identifier>ISSN: 2046-2069</identifier><identifier>EISSN: 2046-2069</identifier><identifier>DOI: 10.1039/c8ra01093e</identifier><identifier>PMID: 35542781</identifier><language>eng</language><publisher>England</publisher><ispartof>RSC advances, 2018-03, Vol.8 (21), p.11693-11704</ispartof><rights>This journal is © The Royal Society of Chemistry.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c991-f74074f8e4a3dcb560d6f9d8a97b811b1db2e29286e31559fdc3137f2e92764d3</citedby><cites>FETCH-LOGICAL-c991-f74074f8e4a3dcb560d6f9d8a97b811b1db2e29286e31559fdc3137f2e92764d3</cites><orcidid>0000-0002-0398-5912 ; 0000-0002-2732-6890</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,776,780,860,27901,27902</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/35542781$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Gayapan, Krittidech</creatorcontrib><creatorcontrib>Sripinun, Sirada</creatorcontrib><creatorcontrib>Panpranot, Joongjai</creatorcontrib><creatorcontrib>Praserthdam, Piyasan</creatorcontrib><creatorcontrib>Assabumrungrat, Suttichai</creatorcontrib><title>Effect of pretreatment atmosphere of WO x /SiO 2 catalysts on metathesis of ethylene and 2-butene to propylene</title><title>RSC advances</title><addtitle>RSC Adv</addtitle><description>The effect of a gas pretreatment atmosphere (pure N
, pure H
and mixed H
/N
) on the metathesis reaction between ethylene and 2-butene to propylene over calcined and non-calcined WO
/SiO
catalysts was investigated. The non-calcined catalysts exhibited higher activity than the calcined catalysts under different gas pretreatment atmospheres. The non-calcined catalyst with the use of pure H
pretreatment showed the highest catalytic performances. As revealed by various characterization results from N
physisorption, XRD, XPS, TEM, SEM-EDX, UV-Vis, Raman, H
-TPR, and NH
-TPD techniques, the WO
phase occurring from the H
pretreatment of the non-calcined catalyst played an important role on the high activity of the catalyst. In addition, better tungsten dispersion, higher isolated surface tetrahedral tungsten oxide species, and W
species were obtained on the H
-treated non-calcined WO
/SiO
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, pure H
and mixed H
/N
) on the metathesis reaction between ethylene and 2-butene to propylene over calcined and non-calcined WO
/SiO
catalysts was investigated. The non-calcined catalysts exhibited higher activity than the calcined catalysts under different gas pretreatment atmospheres. The non-calcined catalyst with the use of pure H
pretreatment showed the highest catalytic performances. As revealed by various characterization results from N
physisorption, XRD, XPS, TEM, SEM-EDX, UV-Vis, Raman, H
-TPR, and NH
-TPD techniques, the WO
phase occurring from the H
pretreatment of the non-calcined catalyst played an important role on the high activity of the catalyst. In addition, better tungsten dispersion, higher isolated surface tetrahedral tungsten oxide species, and W
species were obtained on the H
-treated non-calcined WO
/SiO
catalyst.</abstract><cop>England</cop><pmid>35542781</pmid><doi>10.1039/c8ra01093e</doi><tpages>12</tpages><orcidid>https://orcid.org/0000-0002-0398-5912</orcidid><orcidid>https://orcid.org/0000-0002-2732-6890</orcidid></addata></record> |
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| language | eng |
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| source | DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; PubMed Central; PubMed Central Open Access |
| title | Effect of pretreatment atmosphere of WO x /SiO 2 catalysts on metathesis of ethylene and 2-butene to propylene |
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