Superacidic Mesoporous Catalysts Containing Embedded Heteropolyacids
Superacidic mesoporous silica materials containing embedded heteropolyacids (HPAs) were synthesized by sol–gel method in acidic media. In these materials, HPAs were immobilized into the silica structure covalently. The most acidic materials were obtained at the use of Pluronic P123 as a non-ionic po...
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| Veröffentlicht in: | Catalysis letters 2019-07, Vol.149 (7), p.1983-1990 |
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| container_end_page | 1990 |
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| container_issue | 7 |
| container_start_page | 1983 |
| container_title | Catalysis letters |
| container_volume | 149 |
| creator | Kuvayskaya, Anastasia Garcia, Saul Mohseni, Ray Vasiliev, Aleksey |
| description | Superacidic mesoporous silica materials containing embedded heteropolyacids (HPAs) were synthesized by sol–gel method in acidic media. In these materials, HPAs were immobilized into the silica structure covalently. The most acidic materials were obtained at the use of Pluronic P123 as a non-ionic pore-forming agent. Ionic surfactants also formed mesoporous structures, however, their interaction with HPA reduced acidity of the products. Obtained materials were tested as heterogeneous catalysts in liquid-phase alkylation of 1,3,5-trimethylbenzene by 1-decene. The most effective catalyst demonstrated higher conversion of starting substances to long-chain isomeric alkylbenzenes as compared to the activity of zeolite HY, a well-known alkylation catalyst. No leaching of HPA from silica gel was observed after the alkylation.
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| doi_str_mv | 10.1007/s10562-019-02738-2 |
| format | Article |
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Graphical Abstract</description><subject>Alkylation</subject><subject>Alkylbenzenes</subject><subject>Catalysis</subject><subject>Catalysts</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Industrial Chemistry/Chemical Engineering</subject><subject>Leaching</subject><subject>Liquid phases</subject><subject>Organometallic Chemistry</subject><subject>Physical Chemistry</subject><subject>Pore formation</subject><subject>Silica</subject><subject>Silica gel</subject><subject>Silicon dioxide</subject><subject>Sol-gel processes</subject><subject>Surface active agents</subject><subject>Trimethylbenzene</subject><subject>Zeolites</subject><issn>1011-372X</issn><issn>1572-879X</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2019</creationdate><recordtype>article</recordtype><sourceid>AFKRA</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><recordid>eNp9kU1LAzEQhhdRUKt_wFPBk4etk-xmkxxLrVpQBD-gt5BNZstKu6lJFuy_N3UF8SI5zBCeJ5PhzbILAhMCwK8DAVbRHIjMgfJC5PQgOyGM01xwuTxMPRCSF5wuj7PTEN4BQHIiT7Kbl36LXpvWtmb8iMFtnXd9GM901OtdiKlzXdRt13ar8XxTo7Vox_cY0Sd0vdub4Sw7avQ64PlPHWVvt_PX2X3-8HS3mE0fclNSGXO0RW2KAtDWDak51yCFaYSsClYZy21tuAFa1qXQomKCc6gpGsPRACMlZcUouxze3Xr30WOI6t31vksjFS2h4oJRKRI1GaiVXqNqu8bFtGA6FjetcR02bbqfMsFkmYbTJFz9ERIT8TOudB-CWrw8_2XpwBrvQvDYqK1vN9rvFAG1j0INUagUhfqOQu2lYpBCgrsV-t9__2N9AdZ9i5A</recordid><startdate>20190701</startdate><enddate>20190701</enddate><creator>Kuvayskaya, Anastasia</creator><creator>Garcia, Saul</creator><creator>Mohseni, Ray</creator><creator>Vasiliev, Aleksey</creator><general>Springer US</general><general>Springer</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>ISR</scope><scope>8FE</scope><scope>8FG</scope><scope>ABJCF</scope><scope>AFKRA</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>CCPQU</scope><scope>D1I</scope><scope>DWQXO</scope><scope>HCIFZ</scope><scope>KB.</scope><scope>PDBOC</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PRINS</scope></search><sort><creationdate>20190701</creationdate><title>Superacidic Mesoporous Catalysts Containing Embedded Heteropolyacids</title><author>Kuvayskaya, Anastasia ; 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In these materials, HPAs were immobilized into the silica structure covalently. The most acidic materials were obtained at the use of Pluronic P123 as a non-ionic pore-forming agent. Ionic surfactants also formed mesoporous structures, however, their interaction with HPA reduced acidity of the products. Obtained materials were tested as heterogeneous catalysts in liquid-phase alkylation of 1,3,5-trimethylbenzene by 1-decene. The most effective catalyst demonstrated higher conversion of starting substances to long-chain isomeric alkylbenzenes as compared to the activity of zeolite HY, a well-known alkylation catalyst. No leaching of HPA from silica gel was observed after the alkylation.
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| fulltext | fulltext |
| identifier | ISSN: 1011-372X |
| ispartof | Catalysis letters, 2019-07, Vol.149 (7), p.1983-1990 |
| issn | 1011-372X 1572-879X |
| language | eng |
| recordid | cdi_proquest_journals_2406785298 |
| source | Springer Nature - Complete Springer Journals |
| subjects | Alkylation Alkylbenzenes Catalysis Catalysts Chemistry Chemistry and Materials Science Industrial Chemistry/Chemical Engineering Leaching Liquid phases Organometallic Chemistry Physical Chemistry Pore formation Silica Silica gel Silicon dioxide Sol-gel processes Surface active agents Trimethylbenzene Zeolites |
| title | Superacidic Mesoporous Catalysts Containing Embedded Heteropolyacids |
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