Production of Hydrogen by Catalytic Steam Gasification of Lignin with Al2O3·Na2O·xH2O/NaOH/Al(OH)3 Catalyst
The catalyst, Al2O3·Na2O/NaOH/Al(OH)3, was made by means of hydrolyzation and hydration of sodium aluminum oxide (Al2O3 ·Na2O). Aluminum hydroxide made the catalyst had the similar character of colloid, especially when the mass ratios of sodium aluminum oxide to water were at 1:0.3-1:0.7. So, aluminum hydroxide could be acted as carrier for the catalyst and agglutinant for biomass. Hydrogen production through the reaction of lignin with the catalyst and vapor in a cylindrical stainless steel reactor had been studied. Higher formation rates of hydrogen could be obtained at about 923 K. In order to avoid the production of other kinds of hydrocarbons except CH4 and tar, the gasification temperature should be controlled at about ≤ 723 K. As a whole, the formation rates of hydrogen increased with the increase of vapor. The hydrogen content in the product gas at about 473-723 K could be controlled >80％. The gasification residue could be used as material for combustion. The catalyst could be regenerated through burning of the gasification residue.
hydrogen production lignin catalytic steam gasification
Shen SU Wen LI Zong-qing BAI
State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,No. State Key Laboratory of Coal Conversion,Institute of Coal Chemistry,Chinese Academy of Sciences,No.
国际会议
广州
英文
1238-1241
2008-12-03（万方平台首次上网日期，不代表论文的发表时间）