IR Spectra and Component Ratios in SiO2–TiO2Organic Acid Composites―New Catalysts for the Asymmetric Biginelli Reaction
The amount of acid retained in the SiO 2 –TiO 2 *organic acid composites obtained by the sol-gel method depends on the structure of the acid and its concentration, but largely on the oxide ratio. At an acid concentration in the composite of less than 25%, its molecules undergo chemisorption accompan...
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| Veröffentlicht in: | Russian journal of general chemistry 2023-11, Vol.93 (Suppl 1), p.S382-S389 |
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| container_title | Russian journal of general chemistry |
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| creator | Fedorova, O. V. Koryakova, O. V. Valova, M. S. Rusinov, G. L. |
| description | The amount of acid retained in the SiO
2
–TiO
2
*organic acid composites obtained by the sol-gel method depends on the structure of the acid and its concentration, but largely on the oxide ratio. At an acid concentration in the composite of less than 25%, its molecules undergo chemisorption accompanied by a change in the principal absorption bands in the IR spectra; as the acid concentration increases, physical sorption becomes prevalent. With acid-imprinted composites, an increase in the
ee
values in the asymmetric Biginelli reaction is observed, and the best results were obtained for aromatic acid-imprinted composites with an oxide ratio of 1 : 1. |
| doi_str_mv | 10.1134/S1070363223140384 |
| format | Article |
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2
–TiO
2
*organic acid composites obtained by the sol-gel method depends on the structure of the acid and its concentration, but largely on the oxide ratio. At an acid concentration in the composite of less than 25%, its molecules undergo chemisorption accompanied by a change in the principal absorption bands in the IR spectra; as the acid concentration increases, physical sorption becomes prevalent. With acid-imprinted composites, an increase in the
ee
values in the asymmetric Biginelli reaction is observed, and the best results were obtained for aromatic acid-imprinted composites with an oxide ratio of 1 : 1.</description><identifier>ISSN: 1070-3632</identifier><identifier>EISSN: 1608-3350</identifier><identifier>DOI: 10.1134/S1070363223140384</identifier><language>eng</language><publisher>Moscow: Pleiades Publishing</publisher><subject>Absorption spectra ; Asymmetry ; Chemisorption ; Chemistry ; Chemistry and Materials Science ; Chemistry/Food Science ; Composite materials ; Infrared spectroscopy ; Silicon dioxide ; Sol-gel processes ; Titanium dioxide</subject><ispartof>Russian journal of general chemistry, 2023-11, Vol.93 (Suppl 1), p.S382-S389</ispartof><rights>Pleiades Publishing, Ltd. 2023</rights><rights>Pleiades Publishing, Ltd. 2023.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><cites>FETCH-LOGICAL-c268t-2179abe8e2b97b495234fbeca08b35fb602c64a0adcc4ac3f78e52513dfb79cf3</cites><orcidid>0000-0003-0075-5588 ; 0000-0001-7081-8367 ; 0000-0001-9355-283X ; 0000-0001-8567-9435</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://link.springer.com/content/pdf/10.1134/S1070363223140384$$EPDF$$P50$$Gspringer$$H</linktopdf><linktohtml>$$Uhttps://link.springer.com/10.1134/S1070363223140384$$EHTML$$P50$$Gspringer$$H</linktohtml><link.rule.ids>314,776,780,27901,27902,41464,42533,51294</link.rule.ids></links><search><creatorcontrib>Fedorova, O. V.</creatorcontrib><creatorcontrib>Koryakova, O. V.</creatorcontrib><creatorcontrib>Valova, M. S.</creatorcontrib><creatorcontrib>Rusinov, G. L.</creatorcontrib><title>IR Spectra and Component Ratios in SiO2–TiO2Organic Acid Composites―New Catalysts for the Asymmetric Biginelli Reaction</title><title>Russian journal of general chemistry</title><addtitle>Russ J Gen Chem</addtitle><description>The amount of acid retained in the SiO
2
–TiO
2
*organic acid composites obtained by the sol-gel method depends on the structure of the acid and its concentration, but largely on the oxide ratio. At an acid concentration in the composite of less than 25%, its molecules undergo chemisorption accompanied by a change in the principal absorption bands in the IR spectra; as the acid concentration increases, physical sorption becomes prevalent. With acid-imprinted composites, an increase in the
ee
values in the asymmetric Biginelli reaction is observed, and the best results were obtained for aromatic acid-imprinted composites with an oxide ratio of 1 : 1.</description><subject>Absorption spectra</subject><subject>Asymmetry</subject><subject>Chemisorption</subject><subject>Chemistry</subject><subject>Chemistry and Materials Science</subject><subject>Chemistry/Food Science</subject><subject>Composite materials</subject><subject>Infrared spectroscopy</subject><subject>Silicon dioxide</subject><subject>Sol-gel processes</subject><subject>Titanium dioxide</subject><issn>1070-3632</issn><issn>1608-3350</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2023</creationdate><recordtype>article</recordtype><recordid>eNp1kMtKAzEYhYMoWKsP4C7gejS3mcksa_FSKBbauh4yaVJTZjJjkiLFTd9BfME-iSktuBBX54fznfPDAeAao1uMKbubYZQjmlFCKGaIcnYCejhDPKE0Rafxjnay98_BhfcrhDBCGemBz9EUzjolgxNQ2AUctk3XWmUDnIpgWg-NhTMzIbvt1zzKxC2FNRIOpDmy3gTld9vvF_UBhyKIeuODh7p1MLwpOPCbplHBxci9WRqr6trAqRIydttLcKZF7dXVUfvg9fFhPnxOxpOn0XAwTiTJeEgIzgtRKa5IVeQVK1JCma6UFIhXNNVVhojMmEBiISUTkuqcq5SkmC50lRdS0z64OfR2rn1fKx_KVbt2Nr4sCS8KhjhhaaTwgZKu9d4pXXbONMJtSozK_cbln41jhhwyPrJ2qdxv8_-hH4BZgGU</recordid><startdate>20231101</startdate><enddate>20231101</enddate><creator>Fedorova, O. V.</creator><creator>Koryakova, O. V.</creator><creator>Valova, M. S.</creator><creator>Rusinov, G. L.</creator><general>Pleiades Publishing</general><general>Springer Nature B.V</general><scope>AAYXX</scope><scope>CITATION</scope><orcidid>https://orcid.org/0000-0003-0075-5588</orcidid><orcidid>https://orcid.org/0000-0001-7081-8367</orcidid><orcidid>https://orcid.org/0000-0001-9355-283X</orcidid><orcidid>https://orcid.org/0000-0001-8567-9435</orcidid></search><sort><creationdate>20231101</creationdate><title>IR Spectra and Component Ratios in SiO2–TiO2Organic Acid Composites―New Catalysts for the Asymmetric Biginelli Reaction</title><author>Fedorova, O. V. ; Koryakova, O. V. ; Valova, M. S. ; Rusinov, G. L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c268t-2179abe8e2b97b495234fbeca08b35fb602c64a0adcc4ac3f78e52513dfb79cf3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2023</creationdate><topic>Absorption spectra</topic><topic>Asymmetry</topic><topic>Chemisorption</topic><topic>Chemistry</topic><topic>Chemistry and Materials Science</topic><topic>Chemistry/Food Science</topic><topic>Composite materials</topic><topic>Infrared spectroscopy</topic><topic>Silicon dioxide</topic><topic>Sol-gel processes</topic><topic>Titanium dioxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Fedorova, O. V.</creatorcontrib><creatorcontrib>Koryakova, O. V.</creatorcontrib><creatorcontrib>Valova, M. S.</creatorcontrib><creatorcontrib>Rusinov, G. L.</creatorcontrib><collection>CrossRef</collection><jtitle>Russian journal of general chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Fedorova, O. V.</au><au>Koryakova, O. V.</au><au>Valova, M. S.</au><au>Rusinov, G. L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>IR Spectra and Component Ratios in SiO2–TiO2Organic Acid Composites―New Catalysts for the Asymmetric Biginelli Reaction</atitle><jtitle>Russian journal of general chemistry</jtitle><stitle>Russ J Gen Chem</stitle><date>2023-11-01</date><risdate>2023</risdate><volume>93</volume><issue>Suppl 1</issue><spage>S382</spage><epage>S389</epage><pages>S382-S389</pages><issn>1070-3632</issn><eissn>1608-3350</eissn><abstract>The amount of acid retained in the SiO
2
–TiO
2
*organic acid composites obtained by the sol-gel method depends on the structure of the acid and its concentration, but largely on the oxide ratio. At an acid concentration in the composite of less than 25%, its molecules undergo chemisorption accompanied by a change in the principal absorption bands in the IR spectra; as the acid concentration increases, physical sorption becomes prevalent. With acid-imprinted composites, an increase in the
ee
values in the asymmetric Biginelli reaction is observed, and the best results were obtained for aromatic acid-imprinted composites with an oxide ratio of 1 : 1.</abstract><cop>Moscow</cop><pub>Pleiades Publishing</pub><doi>10.1134/S1070363223140384</doi><orcidid>https://orcid.org/0000-0003-0075-5588</orcidid><orcidid>https://orcid.org/0000-0001-7081-8367</orcidid><orcidid>https://orcid.org/0000-0001-9355-283X</orcidid><orcidid>https://orcid.org/0000-0001-8567-9435</orcidid></addata></record> |
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| source | Springer Nature - Complete Springer Journals |
| subjects | Absorption spectra Asymmetry Chemisorption Chemistry Chemistry and Materials Science Chemistry/Food Science Composite materials Infrared spectroscopy Silicon dioxide Sol-gel processes Titanium dioxide |
| title | IR Spectra and Component Ratios in SiO2–TiO2Organic Acid Composites―New Catalysts for the Asymmetric Biginelli Reaction |
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