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沉淀还原法制备高性能CO_2加氢合成甲醇Cu/ZnO/Al_2O_3催化剂 被引量:20

Preparation of High Performance Cu/ZnO/Al_2O_3 Catalyst for Methanol Synthesis from CO_2 Hydrogenation by Coprecipitation-reduction
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摘要 A novel coprecipitation-reduction process has been proposed for preparing highly selective Cu/ZnO/Al 2O 3 catalysts for methanol synthesis from CO 2 hydrogenation. Compared to the catalysts prepared by the conventional method, the new catalysts prepared via the new method exhibit much higher BET surface area and pore size, much smaller crystallite size and higher catalytic activity and selectivity in CO 2 hydrogenation to methanol. It is also found that the molar ratio of Cu + to Cu 0 on the surface of the catalyst obtained by coprecipitation-reduction is much higher than that on the reduced catalyst obtained by the conventional method, which could be crucial for its high activity and selectivity for catalytic hydrogenation of CO 2 to methanol. A novel coprecipitation-reduction process has been proposed for preparing highly selective Cu/ZnO/Al 2O 3 catalysts for methanol synthesis from CO 2 hydrogenation. Compared to the catalysts prepared by the conventional method, the new catalysts prepared via the new method exhibit much higher BET surface area and pore size, much smaller crystallite size and higher catalytic activity and selectivity in CO 2 hydrogenation to methanol. It is also found that the molar ratio of Cu + to Cu 0 on the surface of the catalyst obtained by coprecipitation-reduction is much higher than that on the reduced catalyst obtained by the conventional method, which could be crucial for its high activity and selectivity for catalytic hydrogenation of CO 2 to methanol.
出处 《高等学校化学学报》 SCIE EI CAS CSCD 北大核心 2003年第7期1296-1298,共3页 Chemical Journal of Chinese Universities
基金 上海市科技发展基金 (批准号 :0 112 NM0 76 ) 煤转化国家重点实验室 2 0 0 2 /2 0 0 3年度开放基金资助
关键词 沉淀还原法 制备 CO2 加氢合成 甲醇 Cu/ZnO/Al2O3 催化剂 碳酸盐共沉淀 液相化学还原 Coprecipitation-reduction method Carbonate coprecipitation Liquid phase chemical reduction CO 2 hydrogenation Methanol synthesis
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