Cu-ZnO based catalysts are of industrial importance for methanol synthesis. In this work, Cu-ZnO-CeO₂ (CZCe) catalyst has been prepared via conventional co-precipitation technique and applied for syngas hydrogenation to methanol with the purpose to study the effect of reversible redox metal oxide (ceria) on the distribution of valence state of active Cu species. Herein, CZCe catalyst exhibited the outstanding catalytic performance with initial methanol yield as high as 0.665 g·g-1 cat.·h-1 and the STY_MeOH could well be maintained with a high value (0.600 g·g-1 cat.·h-1 ) at 230 °C after 70 h of evaluation, which exceeded the reference Cu-ZnO-Al₂O₃ (CZAl) catalyst prepared by the same method. The excellent performance could be attributed to ceria doping tended to dynamically tune the distributions and/or concentrations of Cu⁺ and Cu° species on the catalyst surfaces and retard the conversion of Cu^δ+ (δ < 2) to Cu²⁺ in the process of reaction.

基于Cu-ZnO的催化剂对于甲醇合成具有工业重要性。在这项工作中，Cu-ZnO-CeO ₂（CZCe）催化剂是通过常规共沉淀技术制备的，并用于合成气加氢制甲醇，目的是研究可逆氧化还原金属氧化物（二氧化铈）对化合价分布的影响活性铜的状态。在此，CZCe催化剂表现出优异的催化性能，初始甲醇收率高达0.665 g·g-1 cat。·h-1，STY _MeOH可以保持较高的值（0.600 g·g-1 cat。·经过70小时的评估后，在230°C下的h-1）超过了参考Cu-ZnO-Al ₂ O ₃通过相同的方法制备的（CZAl）催化剂。优异的性能归因于二氧化铈掺杂趋于动态调节催化剂表面上Cu ⁺和Cu°物种的分布和/或浓度，并阻碍了过程中^Cuδ+（δ<2）向Cu ²⁺的转化。反应。