CO2加氢制甲醇用碳纳米管促进的高效新型CuO-ZnO-ZrO2基催化剂

被引：8

作者：

刘志铭

林国栋

张鸿斌

机构：

[1] 厦门大学化学化工学院固体表面物理化学国家重点实验室醇醚酯化工清洁生产国家工程实验室

来源：

厦门大学学报(自然科学版) | 2010年 / 49卷 / 03期

关键词：

Co修饰碳纳米管基复合材料; CuiZnjZrk-x%(y%Co/CNT)催化剂; CO2加氢; 甲醇合成;

D O I：

暂无

中图分类号：

O643.36 [催化剂];

学科分类号：

081705 ;

摘要：

用一种金属Co修饰多壁碳纳米管基复合材料(y%Co/CNT)作为促进剂,制备一种高效新型的y%Co/CNT促进CuO-ZnO-ZrO2基催化剂(记为CuiZnjZrk-x%(y%Co/CNT)),考察其对CO2加氢制甲醇的催化性能.实验结果显示,在组成经优化的Cu8Zn2Zr5-10%(4.5%Co/CNT)催化剂上,5.0 MPa,523 K,V(H2)∶V(CO2)∶V(N2)=69∶23∶8,GHSV=25 000 mL/(h.g)的反应条件下,CO2加氢的转化频率达4.99×10-3s-1,分别是相同条件下非促进的原基质Cu8Zn2Zr5和单纯CNT促进的对应物Cu8Zn2Zr5-10%CNT上的相应值(4.31×10-3和4.64×10-3s-1)的1.16和1.08倍;催化剂的表征结果显示,金属Co修饰CNT促进的催化剂对H2优良的吸附活化性能对CO2加氢转化频率(TOF)的显著提高起主要作用.在CO2加氢产物中甲醇的C-基选择性达97.9%,单程时空产率为699 mg/(h.g),具有实用前景.

引用

页码：297 / 302

页数：6

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