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Citation: Zhang Yu, Wu Fan-Xin, Zhang Hong-Bin, Lin Guo-Dong, Yuan You-Z, . Hydroformylation of Propene over Carbon Nanotubes-Supported Rh-Catalyst[J]. Acta Physico-Chimica Sinica, ;1997, 13(12): 1057-1060. doi: 10.3866/PKU.WHXB19971201 shu

Hydroformylation of Propene over Carbon Nanotubes-Supported Rh-Catalyst

1.
Department of Chemistry State Key Laboratory for Physical Chemistry of the Solid Surface,Xiamen University,Xiamen 361005

Corresponding author: ,
Received Date: 26 August 1997
Available Online: 15 December 1997

Effect of carbon nanotubes, as a novel support material, on the performance of Rh-catalyst supported by them was studied. Catalysts based on carbon nanotubes, SiO2, carbon molecular sieves, active carbon, and GDX-l02(a copolymer of styrene with divinylbenzene),were prepared, and their catalytic behaviors for propene hydroformylation were investigated and compared. The results showed that, over the carbon nanotubes-supported Rh-catalyst, C3H6 conversion and regioselectivity of butyric aldehyde (represented by n/i, a ratio of n-butyric aldehyde to its isomer, i-butyric aldehyde, in the products) were pronouncedly improved: the average turnover frequency(TOF) for the catalytic hydroformylation of propene was 0.079 s-1 at 393K, which was 2.1 times faster than that over the Rh catalyst based on SiO2, and the n/i ratio of the aldehyde products reached to 11.6, which was 1.9 times higher than that over the catalyst based on SiO2. The roles of six-membered C-ring at the surface of the carbon-nanotubes on the stability of the catalytically active Rh-complexes and of the tubular nano-channel on the spatiospecific seletivity of reaction intermediate state and butyric aldehyde produced were discussed.
- Carbon-nanotubes support material,
- Hydroformylation,
- Propene,
- Supported Rh-catalyst
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