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- W2000861741 abstract "Abstract A perfluorinated cation-exchange membrane (Nafion) and an anion-exchange membrane (Tosflex) supported platinum (Pt) were prepared by ion-exchanging with Pt(NH 3 ) 2 2+ or K 2 PtCl 4 , respectively. They were then reduced either with a large excess of NaBH 4 or under hydrogen in a glass-lined stainless-steel bomb at 80°C and 20.6 MPa for 3 h. UV visible spectra indicated that 70–80% of ion exchange was completed. The rate of hydrogenation of cyclo(c-)hexene in methanol with both platinised membranes showed similar trends, increasing with an increase in the Pt loading on the membrane. However, catalytic activity expressed as turnover frequency (TOF) reached a maximum(0.23 s −1 ) at about a 0.5% Pt loading. When the Tosflex-Pt was reduced by H 2 , partial Pt reduction was obtained, resulting in a low TOF. The rate of hydrogenation of c-hexene over a range of pressures indicated that the system was not diffusion limiting after 1.1 MPa." @default.
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- W2000861741 date "2002-09-01" @default.
- W2000861741 modified "2023-09-26" @default.
- W2000861741 title "Hydrogenation of cyclohexene with perfluorinated cation- and anion-exchange membranes supported platinum" @default.
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- W2000861741 doi "https://doi.org/10.1016/s0011-9164(02)00354-5" @default.
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