Citation: Chong Zheng FAN, Chang Sui WANG, Sheng Jun WANG, You Shi WU, D. L. TRIMM, M. S. WAINWRIGHT. SINERING BEHAVIOUR OF RANEY-COPPER CATALYST IN VARIOUS ATMOSPHERES[J]. Chinese Chemical Letters, ;1990, 1(3): 279-282. shu

SINERING BEHAVIOUR OF RANEY-COPPER CATALYST IN VARIOUS ATMOSPHERES

a The University of Science and Technology of China Hefei Anhui P R China;
b Institute of Machine & Electricity of An Hui Province Wu Hu;
c The University of New South Wales Australia

Received Date: 4 April 1990

Raney-Copper (R-Cu) catalyst was prepared and its sintering behaviour in atmospheres at teperature 300℃-600℃ was detected by methods of SSA, PSD, XRD and SEM.It was found that sintering of R-Cu started from much lower temperature than the melting point of copper.Changes both on the surface and in the body phase were discovered.There is a rule in the extent of sintering for R-Cu in different atmospheres which is related to the adsorption of the particular gases molecules on the surface of the catalyst.Dynamical equations of the surface decrease is established and the mechanism of sintering is discussed.Calculations of quantum mechanics givethe similar results.
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