Effects of Cu Precursor Types on the Catalytic Activity of Cu/ZrO2 toward Methanol Synthesis via CO2 Hydrogenation

Shohei Tada, Kazumasa Oshima, Yoshihiro Noda, Ryuji Kikuchi, Minoru Sohmiya, Tetsuo Honma, Shigeo Satokawa

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

This paper presents the influence of different types of copper precursors on CO2-to-methanol hydrogenation over copper nanoparticles on amorphous ZrO2. Here, we chose copper nitrate hydrate, copper acetate hydrate, and a copper ammine complex as the precursor. A copper-acetate-based catalyst, which was precalcined at 350 °C, was more active and selective toward methanol than were the other catalysts. Regardless of the different copper precursors, after calcining a mixture of a copper precursor and amorphous ZrO2 at 350 °C, surface-dispersed Cu2+ species ([CuO4] square planes) were partly formed on amorphous ZrO2. The Cu2+ species was reduced by H2 to form Cu nanoparticles (<5 nm). This paper reports that using copper acetate monohydrate as a copper precursor leads to the greater number of active sites (Cu-a-ZrO2 interfacial sites) compared with the other precursors.

Original languageEnglish
Pages (from-to)19434-19445
Number of pages12
JournalIndustrial and Engineering Chemistry Research
Volume58
Issue number42
DOIs
Publication statusPublished - Oct 23 2019
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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