ChemCatChem p. 391 - 394 (2018)
Update date:2022-08-18
Topics:
Prymak, Iuliia
Prymak, Oleg
Wang, Junhui
Kalevaru, Venkata Narayana
Martin, Andreas
Bentrup, Ursula
Wohlrab, Sebastian
Phosphate surface groups on CeO2–ZrO2 solid solutions were generated by treating Ce–Zr–hydroxide precursors with phosphoric acid. In the catalytic formation of dimethyl carbonate (DMC) from methanol and CO2, the performance of the P-modified samples was markedly affected relative to that of the unmodified ones: Phosphate treatment caused remarkable changes in the phase composition, acid–base properties, and the ability to form monodentate methoxy intermediates. The DMC yield (1.6 %) was successfully improved from 0.24 to 1.6 % by phosphate modification of CeO2–ZrO2 (Ce/Zr=4.7, P/Zr=0.13) and by performing the reaction at 170 °C and 6.5 MPa for 1 h.
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