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The experiments on microwave pyrolysis of soybean straw are studied to produce hydrogen-rich gas under CO2 atmosphere in this paper. The microwave power has an important effect on the temperature. The final temperature increases and the time to obtain the highest temperature is shortened with the power increasing. The gas yield, H2 yield and potential H2 yield increase rapidly with the power increasing, and the gaseous yield at CO2 atmosphere is up to 55.70% at 1000 W, and it is higher than N2 atmosphere. The main components of microwave pyrolysis gas product are H2 and CO, the content of syngas (H2+ CO) at CO2 atmosphere is 84.19% at 1000 W, which is more than N2 atmosphere. However, H2/CO ratio is about 0.80 at CO2 atmosphere, which is lower than N2 atmosphere, and H2/CO ratio at CO2 atmosphere is not suitable for the requirements of chemical synthesis. If it is used to synthesize liquid fuels, H2/CO ratio must be adjusted. [ABSTRACT FROM AUTHOR]

Hydrogen production from the steam-reforming reaction of glycerol was studied over charcoal as catalyst in a tubular fixed-bed reactor. The results showed that charcoal was a novel kind of catalyst, which not only had an active effect on the reforming process, but can decrease the cost of production. The optimum conditions were obtained at 800°C, S/C of 4, WHSV of 1.5 h−1. Hydrogen yield and potential hydrogen yield were up to 75.12% and 84.31%, as well as the carbon conversion reached 89.08% at the optimum conditions. The results of SEM and TGA indicated that there was polymerization and polycondensation of glycerol still in steam-reforming process. [ABSTRACT FROM PUBLISHER]

A novel flat cake-type ordered mesoporous carbon was directly prepared by a one-step hard templating method simultaneously using the nonionic surfactant Pluronic P123 (EO20PO70EO20) and cationic surfactant cetyltrimethylammonium bromide (CTAB) as both the structure-directing agent and carbon precursor. [ABSTRACT FROM AUTHOR]