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前驱体和沉淀剂浓度对CuO/ZnO/CeO2-ZrO2甲醇水蒸气重整制氢催化剂性能的影响

Journal of Fuel Chemistry and Technology(2015)

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Abstract
采用共沉淀法制备了CuO/ZnO/CeO2-ZrO2甲醇水蒸气重整制氢催化剂,探讨了前驱体和沉淀剂浓度对催化剂性能的影响,并采用BET、XRD、H2-TPR和XPS等手段对催化剂进行了表征。结果表明,前驱体和沉淀剂浓度对催化剂的结构和性能影响很大,当前驱体浓度为0.1 mol/L,沉淀剂浓度为0.5 mol/L时,所得催化剂CO选择性最小,催化活性最佳。在360 h稳定实验中,甲醇最高转化率达100%,重整尾气中H2含量保持在74.5%以上,CO含量低于0.8%,催化剂稳定性良好。
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