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首页> 外文期刊>Catalysis Today >Influences of preparation methods of ZrO2 support and treatment conditions of Cu/ZrO2 catalysts on synthesis of methanol via CO hydrogenation
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Influences of preparation methods of ZrO2 support and treatment conditions of Cu/ZrO2 catalysts on synthesis of methanol via CO hydrogenation

机译：ZrO2载体的制备方法和Cu / ZrO2催化剂的处理条件对CO加氢合成甲醇的影响。

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摘要

ZrO2 supports were prepared by different methods (conventional precipitation method, shortened as "CP", and alcogel/thermal treated with nitrogen method, shortened as "AN"), and Cu/ZrO2 catalysts were prepared by impregnation method. The supports and catalysts were characterized by BET, XRD, TEM and TPR. The effects of the preparation methods of ZrO2 supports and the treatment conditions (calcination and reduction temperatures) of the catalyst precursors on the texture structures of the supports and catalysts as well as on the catalytic performances of Cu/ZrO2 in CO hydrogenation were investigated. The results showed that the support ZrO2-AN had larger BET specific surface area, cumulative pore volume and average pore size than the support ZrO2-CP. Cu/ZrO2-AN catalysts showed higher CO hydrogenation activity and selectivity of oxygenates (C1-C4 alcohols and dimethyl ether) than Cu/ZrO2-CP catalysts. Calcination and reduction temperatures of supports and catalyst precursors affected the catalytic performance of Cu/ZrO2. The conversion of CO and the STY of oxygenates were 12.7% and 229g/kg h, respectively, over Cu/ZrO2-AN-550 at the conditions of 300 °C, 6 MPa.
机译：ZrO2载体的制备方法有多种（常规沉淀法，简称“ CP”，醇凝胶/氮气法热处理，简称“ AN”），Cu / ZrO2催化剂采用浸渍法制备。通过BET，XRD，TEM和TPR对载体和催化剂进行表征。研究了ZrO2载体的制备方法和催化剂前体的处理条件（煅烧和还原温度）对载体和催化剂的织构结构以及Cu / ZrO2在CO加氢中的催化性能的影响。结果表明，载体ZrO2-AN比载体ZrO2-CP具有更大的BET比表面积，累积孔体积和平均孔径。与Cu / ZrO2-CP催化剂相比，Cu / ZrO2-AN催化剂显示出更高的CO加氢活性和含氧化合物（C1-C4醇和二甲醚）的选择性。载体和催化剂前体的煅烧和还原温度影响Cu / ZrO2的催化性能。在300°C，6 MPa的条件下，在Cu / ZrO2-AN-550上，CO的转化率和STY的STY分别为12.7％和229g / kg h。

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