中文摘要：

采用共沉淀法制备了一系列Cr2O3-ZnO催化剂用于甲醇水蒸气重整制氢．用X射线衍射和N2吸附考察了Cr含量及焙烧温度对Cr2O3-ZnO催化剂物相结构的影响，并用不锈钢微通道反应器考察了催化剂的性能．结果表明，ZnO是催化剂的主要活性组分，Cr的加入使催化剂的比表面积有所降低，但明显提高了催化剂的活性和稳定性，并且CO选择性随Cr含量的增加而升高．当焙烧温度在500℃左右，CrO3含量在5．3％～17．6％范围内时催化剂性能较好．

英文摘要：

The Cr2O3-ZnO catalyst for methanol steam reforming was prepared by the co-precipitation method and characterized by means of X-ray diffraction and N2 adsorption. The catalytic performance for methanol steam reforming was evaluated using a stainless steel microchannel reactor. The addition of Cr to ZnO resulted in the formation of ZnCr2O4 spinel and promoted the activity and stability of the catalysts, although the BET surface area decreased. However, raising the Cr content also led to an increase in the CO selectivity. The Cr2O3-ZnO catalysts with the Cr content of 5.3 %-17.6 % calcined at above 500℃ exhibited better catalytic performance than that calcined at 400℃.