毛竹在氢气中的催化热解研究

本文以分布广、产量大的速生生物质——毛竹为原料,研究其在H2氛围中、不同反应温度下热解所得产物的产率和分布,并与其在N2氛围中热解的结果进行了比较。结果表明,毛竹在H2气氛中热解,比在N2气氛中更有利于液体产物的生成。两种氛围中温度对液体产物影响的趋势不同,在本文条件下,H2气氛中升高温度始终有利于增加液体产率,使生物质有效转化率提高,在H2中毛竹热解生成甲醇、环丙基甲醇、呋喃甲醛等,这在N2中是不易得到的,但液体产物中含量最高的仍是乙酸。

Catalytic pyrolysis of pubescens under H2 flow

Pubescens is a kind of bamboo distributed widely in the world and grows very fast.The pyrolysis of pubescens under H2 flow was studied in the present work.Under both H2 and N2 flow,the conversion of biomass increased with increasing pyrolysis temperature.Under H2 flow,the pyrolysis of pubescens was in favor of the formation of liquid products compared to that under N2 flow,and the highest yield of liquid product,48.30%,was obtained at 1073 K.The effect of pyrolysis temperature on the distribution of liquid products under H2 flow was not as obvious as that under N2 flow.Under H2 flow,methanol,cyclopropyl carbinol and so on were obtained with high contents,while they were not detected under N2 flow.However acetic acid was also the major component under H2 flow as that under N2 flow.When pubescens was pyrolyzed under N2 flow,H2 was one gas product,however,under H2 flow,H2 was observed to be consumed.