生物质炭和富二氧化碳合成气制取二甲醚

doi:10.3866/PKU.WHXB20110810

Abstract

Abstract:

We report on a novel approach toward dimethyl ether (DME) synthesis using crude CO₂-rich bio-syngas and biomass char. The crude bio-syngas was derived from bio-oil reforming and was initially conditioned by catalytic conversion into CO-rich bio-syngas using biomass char over the Ni/Al₂O₃ catalyst. The molar ratio of CO₂ to CO significantly decreased from 6.33 in the CO₂-rich bio-syngas to 0.21 after bio-syngas conditioning at 800 °C. The yield of dimethyl ether from the conditioned bio-syngas was about four times higher than that from the CO₂-rich bio-syngas over the Cu-ZnO-Al₂O₃/HZSM-5 catalyst. This work potentially provides a useful approach toward producing biofuels and chemicals from bio-syngas and a novel utilization of biomass char.

Key words: Biomass char, Dimethyl ether, Bio-syngas conditioning, NiO-Al₂O₃ catalyst, Cu-ZnO-Al₂O₃/HZSM-5 catalyst

MSC2000:

O643

XU Yong, YAN Shi-Zhi, YE Tong-Qi, ZHANG Zhao, LI Quan-Xin. Dimethyl Ether Production from Biomass Char and CO₂-Rich Bio-Syngas[J].Acta Phys. -Chim. Sin., 2011, 27(08): 1926-1932.

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Dimethyl Ether Production from Biomass Char and CO₂-Rich Bio-Syngas

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Dimethyl Ether Production from Biomass Char and CO₂-Rich Bio-Syngas