Design and preparation of high-surface-area Cu/ZnO/Al2O 3 catalysts using a modified co-precipitation method for the water-gas shift reaction

Adeline Budiman, Muhammad Ridwan, Sung Min Kim, Jae Wook Choi, Chang Won Yoon, Jeong Myeong Ha, Dong Jin Suh, Young Woong Suh

Research output: Contribution to journalArticlepeer-review

40 Citations (Scopus)

Abstract

Highly dispersed Cu/ZnO/Al2O3 catalysts were prepared by modifying a conventional co-precipitation method. By manipulating the preparation conditions, in this case solvent, precipitating temperature, and pH, a Cu surface area of 45.5 ± 1.7 m2/g was prepared, which was much greater than the surface area of 11.4-31.7 m2/g obtained by the conventional co-precipitation method and seemed to be the largest Cu surface area ever reported in the literature. The preparation of catalysts with a high Cu surface area was attributed to the formation of aurichalcite, a complex containing Cu and Zn. The catalysts prepared by the modified co-precipitation method were used for a water-gas shift reaction, exhibiting higher catalytic activity compared to those prepared by the conventional co-precipitation method.

Original languageEnglish
Pages (from-to)220-226
Number of pages7
JournalApplied Catalysis A: General
Volume462-463
DOIs
Publication statusPublished - 2013

Keywords

  • Aurichalcite
  • Co-precipitation
  • Cu/ZnO/AlO
  • Ethylene glycol
  • Water-gas shift

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