Synthesis of dimethyl carbonate from methanol and carbon dioxide: Circumventing thermodynamic limitations

Valerie Eta, Päivi Mäki-Arvela, Anne-Riikka Leino, Krisztián Kordás, Tapio Salmi, Dmitry Yu Murzin, Jyri-Pekka Mikkola

Research output: Contribution to journalArticleScientificpeer-review

70 Citations (Scopus)

Abstract

The synthesis of dimethyl carbonate from methanol and CO2 catalyzed by ZrO2 doped with KCl was investigated using chemical traps for water to circumvent thermodynamic limitations. The reaction, promoted by magnesium, occurred via the formation of carbonated magnesium methoxide (CMM) which adsorbed on the surface of ZrO2. The surface migration of the oxygen atom of ZrO2 to the surface methoxy groups of CMM resulted in the formation of dimethyl carbonate. The resulting MgO then reacted with methanol forming water and regenerating magnesium methoxide. The water formed reacted with the dehydrating agent, thus shifting the equilibrium toward a higher yield of DMC. The yield of 7.2 mol % DMC and 13.6 mol % conversion of methanol was obtained when methanol reacted with CO2 at 150 °C and 9.5 MPa for 8 h. The plausible reaction pathway is described.

Original languageEnglish
Pages (from-to)9609-9617
Number of pages9
JournalIndustrial and Engineering Chemistry Research
Volume49
Issue number20
DOIs
Publication statusPublished - Sep 2010
MoE publication typeA1 Journal article-refereed

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