Bio‑hydrogen and valuable chemicals from industrial waste glycerol via catalytic aqueous-phase transformation
نویسندگان
چکیده
Waste glycerol obtained as by-product of biodiesel production has been submitted to a sequential physico-chemical treatment in order make it suitable for continuous Aqueous-Phase Reforming (APR) tubular reactor. Special focus was given the impact impurities. APR performed using 0.3%Pt/CoAl2O4 catalyst, at 260 °C and 50 bar within WHSV range 6–55 h−1 cover whole conversion ranges. Glycerol yield hydrogen reached 99.7% 45.4%, respectively = 6 h−1. The liquid product distribution strongly varied with conversion, maximum C-yield 1,2-propylene glycol attained 60–90% range. methanol acetic acid aqueous feedstreams were investigated independently. It concluded that exerts negative influence on catalyst stability since decreased by 41% after 5 h TOS. Extensive characterization fresh exhausted catalysts revealed strong Co leaching, especially APR, oxidation metals, carbonaceous deposits. basis regeneration spent consisting reductive 500 °C, established. This work is expected have significant implications development technology crude from industry.
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ژورنال
عنوان ژورنال: Fuel Processing Technology
سال: 2023
ISSN: ['1873-7188', '0378-3820']
DOI: https://doi.org/10.1016/j.fuproc.2022.107634