Bio-MCM-41: A high-performance catalyst support derived from pyrolytic biochar
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Author list: Liu Y., Zhu L., Wang S., Fukuda S.
Publisher: Royal Society of Chemistry
Publication year: 2018
Journal: New Journal of Chemistry (1144-0546)
Volume number: 42
Issue number: 15
Start page: 12394
End page: 12402
Number of pages: 9
ISSN: 1144-0546
eISSN: 1369-9261
Languages: English-Great Britain (EN-GB)
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Abstract
Silica-based materials can be extracted efficiently from biochar prepared by biomass pyrolysis. A bio-mesoporous material was prepared directly after the extraction of silica from biochar using a sequential stepwise method, in which biochar was obtained as the by-product from the pyrolysis of rice husk. This mesoporous material (designated Bio-MCM-41) had a high Brunauer-Emmett-Teller (BET) surface area of 782 m2 g-1. To test the feasibility of Bio-MCM-41 as a catalyst support, Bio-MCM-41-supported Cu-based catalyst (Cu/Bio-MCM-41) was prepared for use in the hydrogenation of methyl acetate (MA) for ethanol production. The probe reaction test of MA hydrogenation showed that the Cu/Bio-MCM-41 catalyst had superior or comparable catalytic performance to a similar catalyst (Cu/Com-MCM-41) prepared from commercial Mobil composition of matter 41 (MCM-41). A high MA conversion of 91.5% with an ethanol selectivity of 96.4% was achieved under the optimum reaction conditions (513 K, 2 MPa, n(H2)/n(MA) = 60, liquid hourly space velocity = 0.8 h-1). In addition, the alkali-rich char residue was activated directly to obtain activated carbon (AC) with a BET surface area of 442 m2 g-1. ฉ 2018 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.
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