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《Chinese Journal of Catalysis》 1993-04
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ADSORETiON-DESORPTION AND SURFACE HYDROGENATION OF CO ON SUPPORTED Ru CATALYSTS

Xu, Hui-zhen; Shi,Jie-hua;Wang, Li-shengand Lu,Li-xin(Department of Chemical Engineering, Zhejiang Institute of Technology, Hangzhou 310014)  
The reduction of Ru catalysts,the adsorption-desorption and the surface hydrogenation of CO on Ru/ZrO2 and Ru/Al2O3 using Ru3(CO)12 or RuCl3 as precursor were studied.The TM values of TPR peak of the (Ru) catalyst prepared from Ru3(CO)12 and the Ru catalyst prepared from RuCl3 supported on A12O3 are higher than those of the Ru supported on ZrO2.The IR bands of CO adsorbed on the supported oxidized (Ru) catalysts are similar to the carbonyl bands corresponding to oxidized Ru surface complex,and its surface structure is mainly in the form of Ru(CO)yO2.However,the IR bands of CO adsorbed on the supported reduced (Ru) catalysts attributed to adsorbed species of various forms are essentially the same as those of the supported Ru catalysts.The chemisorption and hydrogenation centers for CO on Ru/ZrO2 and (Ru)/ ZrO2 are more than those on Ru/Al2O3 and (Ru)/Al2O3.The hydroge-nated products are composed mainly of CH4 and trace CO2.The supported (Ru) catalysts are preferable to the supported Ru catalysts in the selectivity for CH4 production.
【Fund】: 国家自然科学基金
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