New fluorinated carbon support for catalysts
✍ Scribed by M.N Timofeeva; A.B Ayupov; V.N Mitkin; A.V Volodin; E.B Burgina; A.L Chuvilin; G.V Echevsky
- Book ID
- 104056721
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 197 KB
- Volume
- 217
- Category
- Article
- ISSN
- 1381-1169
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✦ Synopsis
The adsorption of H 3 PW 12 O 40 from water and organic solvents (acetone and acetonitrile) by carbon mesoporous materials (Sibunit and fluorinated Sibunit (F-Sibunit)) was studied. The concentration of Brønsted acidic sites in H 3 PW 12 O 40 and 8% H 3 PW 12 O 40 /F-Sibunit was determined from ESR studies of the stable nitroxyl radical (4-hydroxy-2,2 ,6,6 -tetramethylpyperidin-N-oxyl (TEMPOL)) adsorbed from hexane. For H 3 PW 12 O 40 and 8% H 3 PW 12 O 40 /F-Sibunit, the concentration was equal to 4 and 12 mol g -1 , respectively. A correlation between the rate constant of cyclohexene dimerisation of in the hexane solution and the strength of HPA-support interaction was determined.
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