Acta Chimica Sinica ›› 2011, Vol. 69 ›› Issue (05): 570-576. Previous Articles     Next Articles

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  1. (太原理工大学煤化工研究所 煤科学与技术教育部和山西省重点实验室 太原 030024)
  • 投稿日期:2010-07-12 修回日期:2010-09-20 发布日期:2010-10-25
  • 通讯作者: 李忠
  • 基金资助:


Effects of Cu/Zn on the Structure and Activity of CuO/ZnO/Al2O3 Catalysts Prepared under Microwave Irradiation in Aging Process

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

  • Received:2010-07-12 Revised:2010-09-20 Published:2010-10-25
  • Contact: Li Zhong

Microwave irradiation was introduced into the aging process of co-precipitation to prepare CuO/ZnO/Al2O3 catalyst precursor in this paper. Influence of Cu/Zn on catalytic performance was investigated under microwave irradiation, the effects of microwave irradiation on phase composition and catalyst structure were illuminated by use of X-ray diffraction (XRD), FT-IR spectroscopy (FT-IR), derivative thermogravimetry (DTG), H2 temperature programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS). It indicated that the ratio of Cu to Zn had important effect on catalyst, microwave irradiation benefited to the formation of (Cu, Zn)5(CO3)2(OH)6 in the precursor. The precursor possessed more (Cu, Zn)5(CO3)2(OH)6 as the ratio of Cu to Zn was 2.0, it exhibited well synergy, well dispersion, low reduce temperature after calcination, which benefited to slurry methanol synthesis, its methanol space-time yield (STY) and deactivation rate of the catalyst were 309.0 g•kg-1•h-1and 0.11%/d respectively, which excelled the catalytic performance of catalyst prepared by water heating.

Key words: Cu/Zn, microwave irradiation, methanol synthesis, CuO/ZnO/Al2O3 catalyst, slurry-bed

CLC Number: