期刊
RENEWABLE ENERGY
卷 97, 期 -, 页码 373-379出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.renene.2016.05.085
关键词
Biodiesel; Crude bio-glycerol; Aqueous phase reforming; Hydrogenolysis; Hydrogen; Propylene glycol
资金
- European Union (European Social Fund - ESF)
- Greek national funds through the Operational Program Education and Lifelong Learning of the National Strategic Reference Framework (NSRF) - Research Funding Program: THALES [MIS 379333]
In the present work, an one-pot Aqueous Phase Reforming (APR) and Aqueous Phase Hydrogenolysis (APH) of crude glycerol in a batch reactor containing commercial SiO2-Al2O3 supported 65%Ni catalyst is performed. The effect of: i) the glycerol's impurities, ii) the operating temperature (200-240 degrees C) and iii) the crude glycerol concentration (10-40 wt%) is investigated. The main gaseous products are H-2, CH4 and CO2, while the main liquid products are propylene glycol (PG), ethylene glycol (EG), ethanol and acetol. The selectivities of the gaseous and liquid products are not strongly affected by the addition of low concentration impurities of methanol and sodium chloride. Glycerol's conversion increases as temperature and glycerol's concentration increases. Total conversion for both pure and crude glycerol is >90%. The yield of the most useful liquid product (propylene glycol) is reaching up to 30% for a 40 wt% of crude glycerol solution at T = 240 degrees C and 4 h of reaction time. (C) 2016 Elsevier Ltd. All rights reserved.
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