A study of the adsorption activities of silanol surface structures on a fused silica model substrate by combining 29Si CP MAS NMR and inverse gas chromatographic data
The possibilities of inverse gas‐solid chromatography (IGC) in obtaining chromatographic data on fumed silica were examined. Aerosil A‐200, a fused silica model substrate in 29Si nuclear magnetic resonance analysis, was trimethylsilylated to different degrees. IGC was used to very reproducibly deter...
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| Veröffentlicht in: | Journal of high resolution chromatography 1994-02, Vol.17 (2), p.77-84 |
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| container_end_page | 84 |
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| container_issue | 2 |
| container_start_page | 77 |
| container_title | Journal of high resolution chromatography |
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| creator | Scholten, Alex B. Janssen, Hans-Gerd de Haan, Jan W. Cramers, Carel A. |
| description | The possibilities of inverse gas‐solid chromatography (IGC) in obtaining chromatographic data on fumed silica were examined. Aerosil A‐200, a fused silica model substrate in 29Si nuclear magnetic resonance analysis, was trimethylsilylated to different degrees. IGC was used to very reproducibly determine the free specific energies of adsorption of several functionalized probe solutes. Hydrogen bonding solutes have a free specific energy of adsorption that is at least about 50% higher than that of non‐hydrogen bonding probe solutes. NMR was used in combination with elemental analysis to calculate surface concentrations of the different chemical surface structures. IGC data and surface concentrations were combined in order to determine the contribution of each type of surface structure to the total free specific adsorption energy. It could be concluded that residual silanols from the reaction of dihydroxydi‐siloxysiloxane (Q2 groups) with trimethylchlorosilane possess a higher adsorption activity than the silanols initially present. |
| doi_str_mv | 10.1002/jhrc.1240170207 |
| format | Article |
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Aerosil A‐200, a fused silica model substrate in 29Si nuclear magnetic resonance analysis, was trimethylsilylated to different degrees. IGC was used to very reproducibly determine the free specific energies of adsorption of several functionalized probe solutes. Hydrogen bonding solutes have a free specific energy of adsorption that is at least about 50% higher than that of non‐hydrogen bonding probe solutes. NMR was used in combination with elemental analysis to calculate surface concentrations of the different chemical surface structures. IGC data and surface concentrations were combined in order to determine the contribution of each type of surface structure to the total free specific adsorption energy. It could be concluded that residual silanols from the reaction of dihydroxydi‐siloxysiloxane (Q2 groups) with trimethylchlorosilane possess a higher adsorption activity than the silanols initially present.</description><identifier>ISSN: 0935-6304</identifier><identifier>EISSN: 1521-4168</identifier><identifier>DOI: 10.1002/jhrc.1240170207</identifier><language>eng</language><publisher>Hoboken: Wiley Subscription Services, Inc., A Wiley Company</publisher><subject>29Si CP MAS NMR ; Adsorption characteristics ; Analytical chemistry ; Chemistry ; Chromatographic methods and physical methods associated with chromatography ; Exact sciences and technology ; Fused silica model substrates ; Gas chromatographic methods ; Inverse gas-solid chromatography ; Surface OH distribution</subject><ispartof>Journal of high resolution chromatography, 1994-02, Vol.17 (2), p.77-84</ispartof><rights>Copyright © 1994 Hüthig GmbH</rights><rights>1994 INIST-CNRS</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fjhrc.1240170207$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fjhrc.1240170207$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1416,27915,27916,45565,45566</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=4035288$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Scholten, Alex B.</creatorcontrib><creatorcontrib>Janssen, Hans-Gerd</creatorcontrib><creatorcontrib>de Haan, Jan W.</creatorcontrib><creatorcontrib>Cramers, Carel A.</creatorcontrib><title>A study of the adsorption activities of silanol surface structures on a fused silica model substrate by combining 29Si CP MAS NMR and inverse gas chromatographic data</title><title>Journal of high resolution chromatography</title><addtitle>J. High Resol. Chromatogr</addtitle><description>The possibilities of inverse gas‐solid chromatography (IGC) in obtaining chromatographic data on fumed silica were examined. Aerosil A‐200, a fused silica model substrate in 29Si nuclear magnetic resonance analysis, was trimethylsilylated to different degrees. IGC was used to very reproducibly determine the free specific energies of adsorption of several functionalized probe solutes. Hydrogen bonding solutes have a free specific energy of adsorption that is at least about 50% higher than that of non‐hydrogen bonding probe solutes. NMR was used in combination with elemental analysis to calculate surface concentrations of the different chemical surface structures. IGC data and surface concentrations were combined in order to determine the contribution of each type of surface structure to the total free specific adsorption energy. It could be concluded that residual silanols from the reaction of dihydroxydi‐siloxysiloxane (Q2 groups) with trimethylchlorosilane possess a higher adsorption activity than the silanols initially present.</description><subject>29Si CP MAS NMR</subject><subject>Adsorption characteristics</subject><subject>Analytical chemistry</subject><subject>Chemistry</subject><subject>Chromatographic methods and physical methods associated with chromatography</subject><subject>Exact sciences and technology</subject><subject>Fused silica model substrates</subject><subject>Gas chromatographic methods</subject><subject>Inverse gas-solid chromatography</subject><subject>Surface OH distribution</subject><issn>0935-6304</issn><issn>1521-4168</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1994</creationdate><recordtype>article</recordtype><recordid>eNpFkUFv1DAQhS0EEkvhzHUOXFPGjuNkxWkb0S6lLagFIXGxJraz65JNVrZT2D_E7yTRovb0NHrfN5fH2FuOpxxRvL_fBnPKhUReosDyGVvwQvBMclU9Zwtc5kWmcpQv2asY7xFxuZR8wf6uIKbRHmBoIW0dkI1D2Cc_9EAm-QefvItzGX1H_dBBHENLxk1WGE0aw9xOLLRjdHamvCHYDdbNaDNRlBw0BzDDrvG97zcglnce6q9wvbqDm-tboN6C7x9ciA42FMFsw7CjNGwC7bfegKVEr9mLlrro3vzPE_b9_OO3ep1dfbn4VK-uMs8VllkurKmkMdY51RQGrZKuEtJKaZCqAnMpG-U4ceG4FdioIp-SXInWilKq_IS9O_7dUzTUtYF646PeB7-jcNAS80JU1YR9OGK_fecOjzVHPU-h5yn00xT6cn1bP52TnR1tH5P782hT-KVVmZeF_nFzoS9_rs_qz5XUZ_k_spSRYQ</recordid><startdate>199402</startdate><enddate>199402</enddate><creator>Scholten, Alex B.</creator><creator>Janssen, Hans-Gerd</creator><creator>de Haan, Jan W.</creator><creator>Cramers, Carel A.</creator><general>Wiley Subscription Services, Inc., A Wiley Company</general><general>Wiley-VCH</general><scope>BSCLL</scope><scope>IQODW</scope></search><sort><creationdate>199402</creationdate><title>A study of the adsorption activities of silanol surface structures on a fused silica model substrate by combining 29Si CP MAS NMR and inverse gas chromatographic data</title><author>Scholten, Alex B. ; Janssen, Hans-Gerd ; de Haan, Jan W. ; Cramers, Carel A.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-i1607-32dc84ccdee6b5c0d64e824d44c0a850344b6e1a12e1d20b6531d2ae70dd27463</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1994</creationdate><topic>29Si CP MAS NMR</topic><topic>Adsorption characteristics</topic><topic>Analytical chemistry</topic><topic>Chemistry</topic><topic>Chromatographic methods and physical methods associated with chromatography</topic><topic>Exact sciences and technology</topic><topic>Fused silica model substrates</topic><topic>Gas chromatographic methods</topic><topic>Inverse gas-solid chromatography</topic><topic>Surface OH distribution</topic><toplevel>online_resources</toplevel><creatorcontrib>Scholten, Alex B.</creatorcontrib><creatorcontrib>Janssen, Hans-Gerd</creatorcontrib><creatorcontrib>de Haan, Jan W.</creatorcontrib><creatorcontrib>Cramers, Carel A.</creatorcontrib><collection>Istex</collection><collection>Pascal-Francis</collection><jtitle>Journal of high resolution chromatography</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Scholten, Alex B.</au><au>Janssen, Hans-Gerd</au><au>de Haan, Jan W.</au><au>Cramers, Carel A.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>A study of the adsorption activities of silanol surface structures on a fused silica model substrate by combining 29Si CP MAS NMR and inverse gas chromatographic data</atitle><jtitle>Journal of high resolution chromatography</jtitle><addtitle>J. High Resol. Chromatogr</addtitle><date>1994-02</date><risdate>1994</risdate><volume>17</volume><issue>2</issue><spage>77</spage><epage>84</epage><pages>77-84</pages><issn>0935-6304</issn><eissn>1521-4168</eissn><abstract>The possibilities of inverse gas‐solid chromatography (IGC) in obtaining chromatographic data on fumed silica were examined. Aerosil A‐200, a fused silica model substrate in 29Si nuclear magnetic resonance analysis, was trimethylsilylated to different degrees. IGC was used to very reproducibly determine the free specific energies of adsorption of several functionalized probe solutes. Hydrogen bonding solutes have a free specific energy of adsorption that is at least about 50% higher than that of non‐hydrogen bonding probe solutes. NMR was used in combination with elemental analysis to calculate surface concentrations of the different chemical surface structures. IGC data and surface concentrations were combined in order to determine the contribution of each type of surface structure to the total free specific adsorption energy. It could be concluded that residual silanols from the reaction of dihydroxydi‐siloxysiloxane (Q2 groups) with trimethylchlorosilane possess a higher adsorption activity than the silanols initially present.</abstract><cop>Hoboken</cop><pub>Wiley Subscription Services, Inc., A Wiley Company</pub><doi>10.1002/jhrc.1240170207</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0935-6304 |
| ispartof | Journal of high resolution chromatography, 1994-02, Vol.17 (2), p.77-84 |
| issn | 0935-6304 1521-4168 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_4035288 |
| source | Wiley Online Library |
| subjects | 29Si CP MAS NMR Adsorption characteristics Analytical chemistry Chemistry Chromatographic methods and physical methods associated with chromatography Exact sciences and technology Fused silica model substrates Gas chromatographic methods Inverse gas-solid chromatography Surface OH distribution |
| title | A study of the adsorption activities of silanol surface structures on a fused silica model substrate by combining 29Si CP MAS NMR and inverse gas chromatographic data |
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