Effects of Cs-substitution and partial reduction on catalytic performance of Keggin-type phosphomolybdic polyoxometalates for selective oxidation of isobutane
The catalytic performance of Cs-substituted phosphomolybdic salts was studied for selective oxidation of isobutane. The results of activity tests revealed that 360 °C was the optimal reaction temperature. It was demonstrated that oxidizing sites not only took dominating part in the activation of iso...
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| Veröffentlicht in: | Journal of energy chemistry 2016-01, Vol.25 (1), p.85-92 |
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| container_title | Journal of energy chemistry |
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| creator | Liu, Shizhe Chen, Lu Wang, Guowei Liu, Jianwei Gao, Yanan Li, Chunyi Shan, Honghong |
| description | The catalytic performance of Cs-substituted phosphomolybdic salts was studied for selective oxidation of isobutane. The results of activity tests revealed that 360 °C was the optimal reaction temperature. It was demonstrated that oxidizing sites not only took dominating part in the activation of isobutane, but also influenced the product distribution. Besides, appropriate Cs addition led to moderate acidity of catalysts, favoring the selectivity to desired products. Furthermore, to obtain partially reduced catalysts, different calcination atmospheres were investigated and certain proportion of Mo~（5＋） produced during calcination was crucial for the redox reaction. The catalyst calcined in N2 showed the highest yield of MAA（7.0%）. Fe-substitution enhanced the activity of catalysts by rapid reoxidation of Mo~（5＋）. |
| doi_str_mv | 10.1016/j.jechem.2015.11.004 |
| format | Article |
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The results of activity tests revealed that 360 °C was the optimal reaction temperature. It was demonstrated that oxidizing sites not only took dominating part in the activation of isobutane, but also influenced the product distribution. Besides, appropriate Cs addition led to moderate acidity of catalysts, favoring the selectivity to desired products. Furthermore, to obtain partially reduced catalysts, different calcination atmospheres were investigated and certain proportion of Mo~（5＋） produced during calcination was crucial for the redox reaction. The catalyst calcined in N2 showed the highest yield of MAA（7.0%）. Fe-substitution enhanced the activity of catalysts by rapid reoxidation of Mo~（5＋）.</description><identifier>ISSN: 2095-4956</identifier><identifier>DOI: 10.1016/j.jechem.2015.11.004</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Acetal resins ; Activation ; Calcination ; Catalysis ; Catalysts ; Isobutane ; Methacrylic acid ; Optimization ; Oxidation ; Polyoxometalate ; Polyoxometallates ; Selective oxidation ; 催化剂活性 ; 催化性能 ; 异丁烷 ; 磷钼杂多酸 ; 选择氧化 ; 部分还原</subject><ispartof>Journal of energy chemistry, 2016-01, Vol.25 (1), p.85-92</ispartof><rights>2015 Science Press and Dalian Institute of Chemical Physics</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c436t-2b4cd38bb0fe43fede34e092c8be104d9f6bc64cfd8faab76fc968d48d4496d23</citedby><cites>FETCH-LOGICAL-c436t-2b4cd38bb0fe43fede34e092c8be104d9f6bc64cfd8faab76fc968d48d4496d23</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Uhttp://image.cqvip.com/vip1000/qk/84213A/84213A.jpg</thumbnail><link.rule.ids>314,776,780,27901,27902</link.rule.ids></links><search><creatorcontrib>Liu, Shizhe</creatorcontrib><creatorcontrib>Chen, Lu</creatorcontrib><creatorcontrib>Wang, Guowei</creatorcontrib><creatorcontrib>Liu, Jianwei</creatorcontrib><creatorcontrib>Gao, Yanan</creatorcontrib><creatorcontrib>Li, Chunyi</creatorcontrib><creatorcontrib>Shan, Honghong</creatorcontrib><title>Effects of Cs-substitution and partial reduction on catalytic performance of Keggin-type phosphomolybdic polyoxometalates for selective oxidation of isobutane</title><title>Journal of energy chemistry</title><addtitle>Journal of Energy Chemistry</addtitle><description>The catalytic performance of Cs-substituted phosphomolybdic salts was studied for selective oxidation of isobutane. The results of activity tests revealed that 360 °C was the optimal reaction temperature. It was demonstrated that oxidizing sites not only took dominating part in the activation of isobutane, but also influenced the product distribution. Besides, appropriate Cs addition led to moderate acidity of catalysts, favoring the selectivity to desired products. Furthermore, to obtain partially reduced catalysts, different calcination atmospheres were investigated and certain proportion of Mo~（5＋） produced during calcination was crucial for the redox reaction. The catalyst calcined in N2 showed the highest yield of MAA（7.0%）. Fe-substitution enhanced the activity of catalysts by rapid reoxidation of Mo~（5＋）.</description><subject>Acetal resins</subject><subject>Activation</subject><subject>Calcination</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Isobutane</subject><subject>Methacrylic acid</subject><subject>Optimization</subject><subject>Oxidation</subject><subject>Polyoxometalate</subject><subject>Polyoxometallates</subject><subject>Selective oxidation</subject><subject>催化剂活性</subject><subject>催化性能</subject><subject>异丁烷</subject><subject>磷钼杂多酸</subject><subject>选择氧化</subject><subject>部分还原</subject><issn>2095-4956</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqFUctu3CAU9aKVEqX5gyxQVt3YBRsTs6lUjdKHGimbdI14XGYY2cbh4ijzM_3WMnXUbdFFF6HzgHuq6obRhlEmPh2bI9gDTE1LWd8w1lDK31WXLZV9zWUvLqprxCMtS3LWyv6y-n3vPdiMJHqywxpXgznkNYc4Ez07suiUgx5JArfav7elrM56POVgyQLJxzTp2cJZ4Sfs92Gu82kBshwilj3F8WTcGVoO8TVOULg6A5JCJAhjcQ8vhf0anN4MPAkYzZr1DB-q916PCNdv_ar69fX-afe9fnj89mP35aG2vBO5bg23rhuMoR5458FBx4HK1g4GGOVOemGs4Na7wWtt7oS3UgyOl-JSuLa7qj5uukuKzytgVlNAC-NY3hBXVGxggrZSSlagfIPaFBETeLWkMOl0UoyqcwrqqLYU1DkFxZgqKRTa540G5RsvAZJCG6DMzYVURqBcDP8TuH3zPcR5_xzm_T9jIQY5sK6X3R8Yc6X7</recordid><startdate>20160101</startdate><enddate>20160101</enddate><creator>Liu, Shizhe</creator><creator>Chen, Lu</creator><creator>Wang, Guowei</creator><creator>Liu, Jianwei</creator><creator>Gao, Yanan</creator><creator>Li, Chunyi</creator><creator>Shan, Honghong</creator><general>Elsevier B.V</general><scope>2RA</scope><scope>92L</scope><scope>CQIGP</scope><scope>~WA</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7U5</scope><scope>8FD</scope><scope>FR3</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>20160101</creationdate><title>Effects of Cs-substitution and partial reduction on catalytic performance of Keggin-type phosphomolybdic polyoxometalates for selective oxidation of isobutane</title><author>Liu, Shizhe ; Chen, Lu ; Wang, Guowei ; Liu, Jianwei ; Gao, Yanan ; Li, Chunyi ; Shan, Honghong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c436t-2b4cd38bb0fe43fede34e092c8be104d9f6bc64cfd8faab76fc968d48d4496d23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Acetal resins</topic><topic>Activation</topic><topic>Calcination</topic><topic>Catalysis</topic><topic>Catalysts</topic><topic>Isobutane</topic><topic>Methacrylic acid</topic><topic>Optimization</topic><topic>Oxidation</topic><topic>Polyoxometalate</topic><topic>Polyoxometallates</topic><topic>Selective oxidation</topic><topic>催化剂活性</topic><topic>催化性能</topic><topic>异丁烷</topic><topic>磷钼杂多酸</topic><topic>选择氧化</topic><topic>部分还原</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Liu, Shizhe</creatorcontrib><creatorcontrib>Chen, Lu</creatorcontrib><creatorcontrib>Wang, Guowei</creatorcontrib><creatorcontrib>Liu, Jianwei</creatorcontrib><creatorcontrib>Gao, Yanan</creatorcontrib><creatorcontrib>Li, Chunyi</creatorcontrib><creatorcontrib>Shan, Honghong</creatorcontrib><collection>中文科技期刊数据库</collection><collection>中文科技期刊数据库-CALIS站点</collection><collection>中文科技期刊数据库-7.0平台</collection><collection>中文科技期刊数据库- 镜像站点</collection><collection>CrossRef</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Civil Engineering Abstracts</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of energy chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Liu, Shizhe</au><au>Chen, Lu</au><au>Wang, Guowei</au><au>Liu, Jianwei</au><au>Gao, Yanan</au><au>Li, Chunyi</au><au>Shan, Honghong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Effects of Cs-substitution and partial reduction on catalytic performance of Keggin-type phosphomolybdic polyoxometalates for selective oxidation of isobutane</atitle><jtitle>Journal of energy chemistry</jtitle><addtitle>Journal of Energy Chemistry</addtitle><date>2016-01-01</date><risdate>2016</risdate><volume>25</volume><issue>1</issue><spage>85</spage><epage>92</epage><pages>85-92</pages><issn>2095-4956</issn><abstract>The catalytic performance of Cs-substituted phosphomolybdic salts was studied for selective oxidation of isobutane. The results of activity tests revealed that 360 °C was the optimal reaction temperature. It was demonstrated that oxidizing sites not only took dominating part in the activation of isobutane, but also influenced the product distribution. Besides, appropriate Cs addition led to moderate acidity of catalysts, favoring the selectivity to desired products. Furthermore, to obtain partially reduced catalysts, different calcination atmospheres were investigated and certain proportion of Mo~（5＋） produced during calcination was crucial for the redox reaction. The catalyst calcined in N2 showed the highest yield of MAA（7.0%）. Fe-substitution enhanced the activity of catalysts by rapid reoxidation of Mo~（5＋）.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.jechem.2015.11.004</doi><tpages>8</tpages></addata></record> |
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| subjects | Acetal resins Activation Calcination Catalysis Catalysts Isobutane Methacrylic acid Optimization Oxidation Polyoxometalate Polyoxometallates Selective oxidation 催化剂活性 催化性能 异丁烷 磷钼杂多酸 选择氧化 部分还原 |
| title | Effects of Cs-substitution and partial reduction on catalytic performance of Keggin-type phosphomolybdic polyoxometalates for selective oxidation of isobutane |
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