Selective Conversion of Carbon Dioxide and Methanol to Dimethyl Carbonate Using Phosphoric Acid-Modified Zirconia Catalysts

Yoshiki Ikeda, Yutaka Furusawa, Keiichi Tomishige, Kaoru Fujimoto

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

Direct synthesis of dimethyl carbonate from methanol and carbon dioxide was studied over heterogeneous catalysts. It is found that dimethyl carbonate can be synthesized selectively on zirconia catalysts. The additive effect of phosphates or sulfates to zirconia was investigated. Phosphoric acid was found to be very effective for the enhancement of the catalytic activity with high selectivity in this reaction. On zirconia and phosphoric acid-modified zirconia catalysts, the amount of by-products, dimethyl ether and carbon monoxide was below the detection limit. This reaction proceeded at much lower temperature on phosphoric acid-modified zirconia than on unmodified zirconia. It is suggested that DMC formation proceeds on the active sites derived from the interaction between phosphoric acid and zirconium hydoxide during the catalyst preparation.

Original languageEnglish
Pages (from-to)71-84
Number of pages14
JournalACS Symposium Series
Volume809
DOIs
Publication statusPublished - 2002
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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