Effect of Zr Addition on Catalytic Performance of Cu-Zn-Al Oxides for CO2 Hydrogenation to Methanol |
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| Authors: | BEN Shunge YUAN Fulong ZHU Yujun |
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| Institution: | Key Laboratory of Functional Inorganic Material Chemistry(Heilongjiang University), Ministry of Education, School of Chemistry and Materials, Heilongjiang University, Harbin 150080, P. R. China |
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| Abstract: | A series of 50%CuO-25%ZnO-25%Al(Zr) oxide catalysts was synthesized by a reverse co-precipitation method and characterized by XRD, N2 adsorption-desorption, H2-TPR, H2-TPD and CO2-TPD, and used as catalyst for CO2 hydrogenation to methanol under mild conditions(200-260℃ and 1-3 MPa). Consequently, H2-TPR exhibited that the dispersed CuO species increased with the zirconium content, while the H2-TPD showed that small amount of zirconia can increase the H2 desorption amount. As a result, Cat-2 and Cat-3 exhibited an enhanced H2-spillover effect, the most H2 desorption amount, which showed an optimum activity of about 7% methanol yield. |
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| Keywords: | Carbon dioxide Reverse co-precipitation Methanol Catalytic hydrogenation Copper based catalyst |
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