Role of ZrO2 on Cu/ZnO/Al2O3/ZrO2 in methanol synthesis

Heon Jung, Dae Ryook Yang, Kwang Deog Jung

Research output: Contribution to journalArticle

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Abstract

Cu/ZnO/Al2O3/ZrO2 (CZAZr) catalysts were prepared by a coprecipitation method. CO2 was introduced into aging solution to get CZAZr precusors with malachite phase. The x value inCZAZr(x) is the metallic ratio of the Zr component at a fixed metallic ratio of Cu:Zn:Al of 6:3:1. TOFMeOH of CZAZr(0) was 0.56 μmol/m2Cu/s at 250 °C, 50 atm and a gas hourly space velocity (GHSV) of 12 000 mL/gcat/h. TOFMeOHs of CZAZr(1), CZAZr (2), CZAZr(3), and CZAZr(4) were 0.64, 0.90, 0.99, and 1.08 μmol/m2Cu/s at the same reaction condition, respectively. TOFMeOHs of CZAZr catalysts increased with increasing ZrO2 content, indicating that high TOFMeOH of CZAZr catalysts came from ZrO2 as compared with CZAZr(0) catalysts. These kinetic data on CZAZr catalysts in the practical reaction condition proved the suggestion from previous infrared (IR) study on Cu/Zr catalysts. ZrO2 afforded the adsorption sites for CO and CO2 insertion into Zr-OH and Cu supplied active hydrogen to ZrO2 for hydrogenating formate and hydroxycarbonate to methanol on ZrO2 in addition to methanol synthesis on Cu/ZnO/Al2O3.

Original languageEnglish
Pages (from-to)2875-2880
Number of pages6
JournalBulletin of the Korean Chemical Society
Volume36
Issue number12
DOIs
Publication statusPublished - 2015 Dec 1

Fingerprint

Methanol
Catalysts
formic acid
Carbon Monoxide
Coprecipitation
Hydrogen
Aging of materials
Gases
Infrared radiation
Adsorption
Kinetics

Keywords

  • Cu/ZnO/AlO/ZrO catalyst
  • Hydrogen spillover
  • Methanol synthesis
  • Structure sensitivity

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Role of ZrO2 on Cu/ZnO/Al2O3/ZrO2 in methanol synthesis. / Jung, Heon; Yang, Dae Ryook; Jung, Kwang Deog.

In: Bulletin of the Korean Chemical Society, Vol. 36, No. 12, 01.12.2015, p. 2875-2880.

Research output: Contribution to journalArticle

Jung, Heon ; Yang, Dae Ryook ; Jung, Kwang Deog. / Role of ZrO2 on Cu/ZnO/Al2O3/ZrO2 in methanol synthesis. In: Bulletin of the Korean Chemical Society. 2015 ; Vol. 36, No. 12. pp. 2875-2880.
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