不同Cu源与Zn源对CuZnAl催化剂催化合成气制乙醇性能的影响

李超; 陈永恩; 黄伟; 高志华

不同Cu源与Zn源对CuZnAl催化剂催化合成气制乙醇性能的影响

太原理工大学煤科学与技术教育部与山西省共建重点实验室, 山西太原 030024

基金项目: 国家自然科学基金重点项目(21336006); 国家自然科学基金面上项目(21176176); 山西省自然科学基金(2012011046-1)。

详细信息

通讯作者:
高志华

中图分类号: O643
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出版历程
- 收稿日期: 2014-12-29
- 修回日期: 2015-03-09
- 刊出日期: 2015-07-30

Effect of the source of Cu and Zn on the ethanol synthesis from syngas over CuZnAl catalyst

Key Laboratory of Coal Science and Technology, Ministry of Education of China and Shanxi Province, Taiyuan University of Technology, Taiyuan 030024, China

摘要

摘要: 采用完全液相法以不同的铜源和锌源为原料制备了CuZnAl催化剂,在浆态床反应器中考察了其催化合成气合成乙醇的性能,并采用XRD、H₂-TPR、NH₃-TPD-MS及BET技术对催化剂进行表征。结果表明,以乙酸铜替换硝酸铜,抑制了热处理过程中Cu₂O的还原,提高了催化剂的比表面积,为催化剂具有较高的乙醇选择性提供了适宜的酸中心和孔径,其总醇选择性达45.6%,总醇中乙醇所占比例达28.7%。
- CuZnAl催化剂 /
- 乙酸铜 /
- 乙酸锌 /
- 合成气 /
- 乙醇
Abstract: CuZnAl catalysts were prepared using different sources of copper and zinc through complete liquid-phase technology. The catalytic performances for the ethanol synthesis from syngas were investigated in a slurry phase reactor. The catalysts were characterized by XRD, H₂-TPR, NH₃-TPD-MS and BET technology. The results suggest that replacing copper nitrate with copper acetate would restrain the reduction of Cu₂O in the heat treatment and raise the surface areas of the catalysts. It also provides suitable acid sites and pore sizes for higher ethanol selectivity. The selectivity of total alcohols reaches 45.6% and the ethanol selectivity accounts for 28.7%.
- CuZnAl catalyst /
- copper acetate /
- zinc acetate /
- syngas /
- ethanol

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参考文献(23)

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