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Gas-phase synthesis of dimethyl carbonate from methanol and carbon dioxide over Co(1.5)PW(12)O(40) Keggin-type heteropolyanion.

Ahmed A Aouissi, Zeid Abdullah ZA Al-Othman, and Amro A Al-Amro

Int J Mol Sci 11(4):1343-51 (2010) PMID 20480023

The reactivity of Co(1.5)PW(12)O(40) in the direct synthesis of dimethyl carbonate (DMC) from CO(2) and CH(3)OH was investigated. The synthesized catalyst has been characterized by means of FTIR, XRD, TG, and DTA and tested in gas phase under atmospheric pressure. The effects of the reaction temperature, time on stream, and methanol weight hourly space velocity (MWHSV) on the conversion and DMC selectivity were investigated. The highest conversion (7.6%) and highest DMC selectivity (86.5%) were obtained at the lowest temperature used (200 degrees C). Increasing the space velocity MWHSV increased the selectivity of DMC, but decreased the conversion. A gain of 18.4% of DMC selectivity was obtained when the MWHSV was increased from 0.65 h(-1) to 3.2 h(-1).

DOI: 10.3390/ijms11041343
Version: za2963e q8zae q8zb0 q8zca q8zd3 q8zef q8zf9 q8zg0
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