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Citation: LIU Ning, SHI Qiu-Jie, LIU Lei. Cu Catalyst Supported on MgO/Sepiolite Composite Carrier for Dehydrogenation of Cyclohexanol[J]. Chinese Journal of Applied Chemistry, ;2007, 24(12): 1443-1447. shu

Cu Catalyst Supported on MgO/Sepiolite Composite Carrier for Dehydrogenation of Cyclohexanol

1.
Institute of Applied Chemistry, Nanchang University, Nanchang 330031

Corresponding author: SHI Qiu-Jie,
Received Date: 2 February 2007
Available Online: 8 May 2007

A series of Cu catalysts supported on MgO/Sepiolite composite carriers were prepared by precipitation method combined with impregnation method and used for dehydrogenation of cyclohexanol.The catalysts were characterized by means of N₂ adsorption,X-ray diffraction(XRD),Infrared spectroscopy(IR),NH₃ temperature programmed desorption(NH₃-TPD),and temperature programmed reduction(TPR),respec-tively.The results show that the addition of sepiolite facilitated the increase of the specific surface area of the catalysts,but when the fraction of the sepiolite in the carrier was too high,the acidity of the catalyst and the form of the Cu species would be influenced,which lead to decrease of the activity and selectivity of the catalysts.When the mass ratio of Sepiolite in the composite carrier was up to 40%,the catalyst exhibit an excellent catalytic activity and selectivity.
- sepiolite,
- composite carrier,
- cyclohexanol,
- dehydrogenation
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