New fluorinated carbon support for catalysts

• Published in: Journal of molecular catalysis. A, Chemical Vol. 217; no. 1; pp. 155 - 160
• Main Authors: Timofeeva, M.N, Ayupov, A.B, Mitkin, V.N, Volodin, A.V, Burgina, E.B, Chuvilin, A.L, Echevsky, G.V
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 03.08.2004
• Subjects: Adsorption; Brønsted acidity; Dimerisation of cyclohexene; Fluorinated carbon; Heteropoly acid; TEMPOL; Dimerisation of cyclohexene; Brønsted acidity; Adsorption; Heteropoly acid; Fluorinated carbon; TEMPOL
• ISSN: 1381-1169; 1873-314X
• DOI: 10.1016/j.molcata.2004.03.025

The adsorption of H 3PW 12O 40 from water and organic solvents by carbon meso-porous materials (Sibunit and fluorinated Sibunit (F-Sibunit)) was studied. A correlation between the rate constant of cyclohexene dimerisation of in the hexane solution and the strength of HPA-support interaction was determined. The adsorption of H 3PW 12O 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 3PW 12O 40 and 8% H 3PW 12O 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 3PW 12O 40 and 8% H 3PW 12O 40/F-Sibunit, the concentration was equal to 4 and 12 μmol 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.