Scouring-ball effect of microsized silica particles on operation stability of the membrane reactor for acetone ammoximation over TS-1
A ceramic membrane reactor system was developed for the continuous ammoximation of acetone to acetone oxime over titanium silicalites-1 (TS-1) catalysts. The effects of catalyst concentration and microsized silica particles on the performances of the membrane reactor system were examined in detail....
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| Veröffentlicht in: | Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2010-01, Vol.156 (2), p.418-422 |
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| container_issue | 2 |
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| container_title | Chemical engineering journal (Lausanne, Switzerland : 1996) |
| container_volume | 156 |
| creator | Chen, Rizhi Bu, Zhen Li, Zhaohui Zhong, Zhaoxiang Jin, Wanqin Xing, Weihong |
| description | A ceramic membrane reactor system was developed for the continuous ammoximation of acetone to acetone oxime over titanium silicalites-1 (TS-1) catalysts. The effects of catalyst concentration and microsized silica particles on the performances of the membrane reactor system were examined in detail. For the membrane reactor system the optimal catalyst concentration is 17.0
g
L
−1, obviously higher than the one obtained from the previous experiments in a batch glass reactor, because the strong adhesion of TS-1 catalyst particles on the surface of the pipeline, the tank and the membrane leads to the decrease of effective catalyst concentration. Adding the microsized silica particles can effectively inhibit the decrease of TS-1 catalysts concentration in reaction slurry and improve the operation stability of the membrane reactor system significantly, benefiting from the scouring effect and the attachment of TS-1 particles on the surfaces of larger silica particles. According to the estimation of hydrodynamic forces acting on particles, microsized silica particles are hard to deposit on the contact surfaces at the studied conditions and therefore a longer stable operation of the membrane reactor system has been achieved. |
| doi_str_mv | 10.1016/j.cej.2009.11.001 |
| format | Article |
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g
L
−1, obviously higher than the one obtained from the previous experiments in a batch glass reactor, because the strong adhesion of TS-1 catalyst particles on the surface of the pipeline, the tank and the membrane leads to the decrease of effective catalyst concentration. Adding the microsized silica particles can effectively inhibit the decrease of TS-1 catalysts concentration in reaction slurry and improve the operation stability of the membrane reactor system significantly, benefiting from the scouring effect and the attachment of TS-1 particles on the surfaces of larger silica particles. According to the estimation of hydrodynamic forces acting on particles, microsized silica particles are hard to deposit on the contact surfaces at the studied conditions and therefore a longer stable operation of the membrane reactor system has been achieved.</description><identifier>ISSN: 1385-8947</identifier><identifier>EISSN: 1873-3212</identifier><identifier>DOI: 10.1016/j.cej.2009.11.001</identifier><language>eng</language><publisher>Oxford: Elsevier B.V</publisher><subject>Acetone ammoximation ; Acetone oxime ; Applied sciences ; Catalysis ; Catalytic reactions ; Ceramic membrane reactor ; Chemical engineering ; Chemistry ; Exact sciences and technology ; General and physical chemistry ; Reactors ; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry ; Titanium silicalite-1</subject><ispartof>Chemical engineering journal (Lausanne, Switzerland : 1996), 2010-01, Vol.156 (2), p.418-422</ispartof><rights>2009</rights><rights>2015 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c428t-f6125228a4513ffda4e9bff21d715392ddd23a045f7e6ed6486bf6f5cfe99d93</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S138589470900761X$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=22735062$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Chen, Rizhi</creatorcontrib><creatorcontrib>Bu, Zhen</creatorcontrib><creatorcontrib>Li, Zhaohui</creatorcontrib><creatorcontrib>Zhong, Zhaoxiang</creatorcontrib><creatorcontrib>Jin, Wanqin</creatorcontrib><creatorcontrib>Xing, Weihong</creatorcontrib><title>Scouring-ball effect of microsized silica particles on operation stability of the membrane reactor for acetone ammoximation over TS-1</title><title>Chemical engineering journal (Lausanne, Switzerland : 1996)</title><description>A ceramic membrane reactor system was developed for the continuous ammoximation of acetone to acetone oxime over titanium silicalites-1 (TS-1) catalysts. The effects of catalyst concentration and microsized silica particles on the performances of the membrane reactor system were examined in detail. For the membrane reactor system the optimal catalyst concentration is 17.0
g
L
−1, obviously higher than the one obtained from the previous experiments in a batch glass reactor, because the strong adhesion of TS-1 catalyst particles on the surface of the pipeline, the tank and the membrane leads to the decrease of effective catalyst concentration. Adding the microsized silica particles can effectively inhibit the decrease of TS-1 catalysts concentration in reaction slurry and improve the operation stability of the membrane reactor system significantly, benefiting from the scouring effect and the attachment of TS-1 particles on the surfaces of larger silica particles. According to the estimation of hydrodynamic forces acting on particles, microsized silica particles are hard to deposit on the contact surfaces at the studied conditions and therefore a longer stable operation of the membrane reactor system has been achieved.</description><subject>Acetone ammoximation</subject><subject>Acetone oxime</subject><subject>Applied sciences</subject><subject>Catalysis</subject><subject>Catalytic reactions</subject><subject>Ceramic membrane reactor</subject><subject>Chemical engineering</subject><subject>Chemistry</subject><subject>Exact sciences and technology</subject><subject>General and physical chemistry</subject><subject>Reactors</subject><subject>Theory of reactions, general kinetics. Catalysis. 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Catalysis. Nomenclature, chemical documentation, computer chemistry</topic><topic>Titanium silicalite-1</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Rizhi</creatorcontrib><creatorcontrib>Bu, Zhen</creatorcontrib><creatorcontrib>Li, Zhaohui</creatorcontrib><creatorcontrib>Zhong, Zhaoxiang</creatorcontrib><creatorcontrib>Jin, Wanqin</creatorcontrib><creatorcontrib>Xing, Weihong</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><jtitle>Chemical engineering journal (Lausanne, Switzerland : 1996)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Rizhi</au><au>Bu, Zhen</au><au>Li, Zhaohui</au><au>Zhong, Zhaoxiang</au><au>Jin, Wanqin</au><au>Xing, Weihong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Scouring-ball effect of microsized silica particles on operation stability of the membrane reactor for acetone ammoximation over TS-1</atitle><jtitle>Chemical engineering journal (Lausanne, Switzerland : 1996)</jtitle><date>2010-01-15</date><risdate>2010</risdate><volume>156</volume><issue>2</issue><spage>418</spage><epage>422</epage><pages>418-422</pages><issn>1385-8947</issn><eissn>1873-3212</eissn><abstract>A ceramic membrane reactor system was developed for the continuous ammoximation of acetone to acetone oxime over titanium silicalites-1 (TS-1) catalysts. The effects of catalyst concentration and microsized silica particles on the performances of the membrane reactor system were examined in detail. For the membrane reactor system the optimal catalyst concentration is 17.0
g
L
−1, obviously higher than the one obtained from the previous experiments in a batch glass reactor, because the strong adhesion of TS-1 catalyst particles on the surface of the pipeline, the tank and the membrane leads to the decrease of effective catalyst concentration. Adding the microsized silica particles can effectively inhibit the decrease of TS-1 catalysts concentration in reaction slurry and improve the operation stability of the membrane reactor system significantly, benefiting from the scouring effect and the attachment of TS-1 particles on the surfaces of larger silica particles. According to the estimation of hydrodynamic forces acting on particles, microsized silica particles are hard to deposit on the contact surfaces at the studied conditions and therefore a longer stable operation of the membrane reactor system has been achieved.</abstract><cop>Oxford</cop><pub>Elsevier B.V</pub><doi>10.1016/j.cej.2009.11.001</doi><tpages>5</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 1385-8947 |
| ispartof | Chemical engineering journal (Lausanne, Switzerland : 1996), 2010-01, Vol.156 (2), p.418-422 |
| issn | 1385-8947 1873-3212 |
| language | eng |
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| source | Elsevier ScienceDirect Journals |
| subjects | Acetone ammoximation Acetone oxime Applied sciences Catalysis Catalytic reactions Ceramic membrane reactor Chemical engineering Chemistry Exact sciences and technology General and physical chemistry Reactors Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Titanium silicalite-1 |
| title | Scouring-ball effect of microsized silica particles on operation stability of the membrane reactor for acetone ammoximation over TS-1 |
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