Effect of Adding ZrO2 Methods on the Properties of CuO-ZnO-ZrO2 Catalysts

Abstract

Abstract: The influence of preparation methods for catsalyst CuO-ZnO-ZrO₂ on the activities for the reaction of rnethanol synthesis from CO₂ and hydrogen is studied.The optimum composition of the catalysts has been obtained.BET, XRD, TPRand XPSwere used to examine the crystal phases of catalysts and the state of active species.The adding methods of ZrO₂ affect the ratios of various component to catalytic activity.Adding ZrO₂ can increase the dispersion of active species and the surface area.The catalytic activities are not only related with the catalyst surface area, but also with the amount of bulky CuO, The activities and surface area of catalysts prepared from two solutions containing precipitate were higher than those of the catalysts made by adding ZrO₂ powder.And the former has 75% CuOin bulk phase in the catalyst, the latter just has only 69% CuOin bulk phase.The state of active component CuOand its effect is also studied.

Key words: Zirconium oxide, Adding method, Catalytic property, Carbon dioxide, Methanol

TrendMD:

XU Yong, WANG Ren . Effect of Adding ZrO₂ Methods on the Properties of CuO-ZnO-ZrO₂ Catalysts[J]. Chem. J. Chinese Universities, 1993, 14(6): 849.

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Effect of Adding ZrO₂ Methods on the Properties of CuO-ZnO-ZrO₂ Catalysts

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