Barbara B. Bunn, Tamas Bartik , Berit Bartik , William R. Bebout, Thomas E. Glass, Brian E. Hanson
{"title":"磷-31核磁共振自旋晶格弛豫时间作为负载型水相催化剂中吸附水的间接探针","authors":"Barbara B. Bunn, Tamas Bartik , Berit Bartik , William R. Bebout, Thomas E. Glass, Brian E. Hanson","doi":"10.1016/S0304-5102(94)87037-3","DOIUrl":null,"url":null,"abstract":"<div><p>Phosphorus-31 spin lattice relaxation times, <em>T</em><sub>1</sub>'s, for SAP hydroformylation catalysts derived from HRh (CO) (TPPTS)<sub>3</sub> and TPPTS (TPPTS = trisulfonated triphenyl phosphine trisodium salt) are consistent with a liquid-like character for the supported aqueous phase. Ale <em>T</em><sub>1</sub> for solid TPPTS is 1150 s while for TPPTS in a supported aqueous phase <em>T</em><sub>1</sub> varies from 220 to 4.9 s. A <em>T</em><sub>1</sub> of 4.9 s is close to the value obtained for TPPTS in solution and is observed at a H<sub>2</sub>O/P ratio of 24.9. At this level of water content previously reported SAP catalysts have shown maximum catalytic activity for the hydroformylation of olefins.</p></div>","PeriodicalId":16567,"journal":{"name":"分子催化","volume":"94 2","pages":"Pages 157-161"},"PeriodicalIF":0.0000,"publicationDate":"1994-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/S0304-5102(94)87037-3","citationCount":"11","resultStr":"{\"title\":\"Phosphorus-31 NMR spin lattice relaxation times as an indirect probe of adsorbed water in supported aqueous phase catalysts\",\"authors\":\"Barbara B. Bunn, Tamas Bartik , Berit Bartik , William R. Bebout, Thomas E. Glass, Brian E. Hanson\",\"doi\":\"10.1016/S0304-5102(94)87037-3\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Phosphorus-31 spin lattice relaxation times, <em>T</em><sub>1</sub>'s, for SAP hydroformylation catalysts derived from HRh (CO) (TPPTS)<sub>3</sub> and TPPTS (TPPTS = trisulfonated triphenyl phosphine trisodium salt) are consistent with a liquid-like character for the supported aqueous phase. Ale <em>T</em><sub>1</sub> for solid TPPTS is 1150 s while for TPPTS in a supported aqueous phase <em>T</em><sub>1</sub> varies from 220 to 4.9 s. A <em>T</em><sub>1</sub> of 4.9 s is close to the value obtained for TPPTS in solution and is observed at a H<sub>2</sub>O/P ratio of 24.9. At this level of water content previously reported SAP catalysts have shown maximum catalytic activity for the hydroformylation of olefins.</p></div>\",\"PeriodicalId\":16567,\"journal\":{\"name\":\"分子催化\",\"volume\":\"94 2\",\"pages\":\"Pages 157-161\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"1994-11-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://sci-hub-pdf.com/10.1016/S0304-5102(94)87037-3\",\"citationCount\":\"11\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"分子催化\",\"FirstCategoryId\":\"1089\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0304510294870373\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q4\",\"JCRName\":\"Chemical Engineering\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"分子催化","FirstCategoryId":"1089","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0304510294870373","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Chemical Engineering","Score":null,"Total":0}
Phosphorus-31 NMR spin lattice relaxation times as an indirect probe of adsorbed water in supported aqueous phase catalysts
Phosphorus-31 spin lattice relaxation times, T1's, for SAP hydroformylation catalysts derived from HRh (CO) (TPPTS)3 and TPPTS (TPPTS = trisulfonated triphenyl phosphine trisodium salt) are consistent with a liquid-like character for the supported aqueous phase. Ale T1 for solid TPPTS is 1150 s while for TPPTS in a supported aqueous phase T1 varies from 220 to 4.9 s. A T1 of 4.9 s is close to the value obtained for TPPTS in solution and is observed at a H2O/P ratio of 24.9. At this level of water content previously reported SAP catalysts have shown maximum catalytic activity for the hydroformylation of olefins.
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