固体超强酸Cl—/Fe_2O_3的制备及催化液化生物质

Liquefaction of biomass by using solid superacid as catalyst

通过水热合法制备了固体超强酸催化剂Cl—/Fe2O3,并将其应用于稻壳,毛竹和玉米秸秆等生物质的催化液化。考察了催化剂用量、反应温度、反应时间等对催化剂性能的影响,试验表明在300℃、反应时间3 h、催化剂的用量为原料质量分数的4%时,可以获得较好的液化效果。以玉米秸秆为原料的催化剂寿命试验结果还表明,催化剂可以多次重复使用。

The catalyst of Cl^-/Fe2O3 was prepared by hydrothermal synthesis. In this paper, rice husk, pubescens and corn stalk were liquefied by using Cl^-/Fe2O3 as catalyst. The influences of the amount of the catalyst, reaction temperature and reaction time on the catalyst activity for the biomass conversion were investigated, and the life test of the catalyst was carried out. The results showed that Cl^-/Fe2O3 could be used as the catalyst in the liquefaction of biomass. The best operation conditions were reaction temperature of 300℃, reaction time of 3 hours and the amount of the catalyst of 4% （wt%）. The catalyst was re-used 5 times, and the conversion of corn stalk was up to 90%. All the above results showed that the catalyst had good activity and stability.