摘要
以纳米二氧化钛为原料,在130℃水热合成钛酸纳米管TNTs后,用1 mol/L硫酸浸渍,450℃焙烧制备了SO42-/TNTs固体酸催化剂,并用XRD,SEM对纳米TiO2,TNTs,SO42-/TNTs进行表征。将制备的SO42-/TNTs与氧化锌混合用于离子液体[BMIM]Cl-水体系中微晶纤维素制氢反应,考察了催化剂、离子液体水含量及反应温度等因素对氢气产量的影响。试验表明,与微孔分子筛HZSM-5相比,SO42-/TNTs更有利于纤维素制氢反应,在相同的催化剂用量下,后者的氢气产量比前者提高了约60%。试验还发现,同一催化剂在使用量不同时,所得氢气产量有很大差异,催化剂由50 mg增至150 mg后,氢气产量提高了近两倍,达到132.33μmol/(g.h)。离子液体加水量的多少对氢气产量也有很大影响,加水后氢气产量增多,但若加水过多氢气产量反而有所下降。
Take nano-TiO2 as raw materials,hydrothermal synthesized TNTs at 130 ℃ then in l mol/L H2SO4 impregnation and 450 ℃ calcinations to prepare solid acid catalyst of SO4^2-/TNTs, meanwhile, Nano-TiO2, TNTs and SO4^2-/TNTs was characterized using XRD and SEM.and the prepared SO4^2-/TNTs and ZnO was mixed in the [BMIM]Cl-H2O mixtures for hydrogen production reaction from microcrystalline cellulose,and the influence of catalyst, ionic liquid-H2O ratio, and temperature on the yield of hydrogen was investigated. The results show that SO4^2-/TNTs is more favorable to hydrogen production than molecular sieve HZSM-5, and the yield of hydrogen is increased by 60% under the same catalyst dosage.The results also show that the amount of the catalyst can make a big difference to the yield of hydrogen. When the amount of catalyst was increased from 50 mg to 150 nag, the yield of hydrogen almost tripled to 132.33 μmol/（g·h）. Besides, the ratio of [BMIM]Cl and water has a big influence on the yield of hydrogen, hydrogen production increased when adding water ,though decreased when the amount of water is too much.
出处
《可再生能源》
CAS
北大核心
2013年第6期70-74,78,共6页
Renewable Energy Resources
基金
国家自然科学基金(51176113)
关键词
离子液体
钛酸纳米管
固体酸
微晶纤维素
制氢
ionic liquid
TNTs
solid acid
microcrystalline cellulose
hydrogen production
