摘要
利用热裂解仪-气相色谱/质谱联用仪(Py-GC/MS)对黄豆秆进行了两级热解。结果表明,随着第一级热解温度(t1)的升高,第一级热解产物总峰面积逐渐增大,第二级热解产物总峰面积逐渐减小;在第一级热解产物中,酸类、酮类和呋喃类等源于纤维素和半纤维素的产物含量在t1为400和450℃时较高;在t1为450和500℃的条件下,第二级热解产物中烃类产物的含量高达20%以上。两级热解可以在第一级和第二级热解中分别获取不同的高含量产物,如乙酸、糠醛、愈创木酚、甲苯和苯等,实现生物质的选择性热解。
Two-step pyrolysis of soybean stalk was investigated using pyrolysis-gas chromatography/mass spectrometry （ Py-GC/MS ） . The results indicate that with the increase of the first-step pyrolysis temperature （ t1 ） , the total peak area of the first-step products becomes higher. However, for the second-step, the total peak area decreases gradually with the increase of t1 . The products in the first-step pyrolysis have higher contents of acids, ketones and furans when t1 is 400 or 450℃. This is because that the products are originated from cellulose and hemicellulose. The content of hydrocarbon products in the second-step is more than 20% when t1 is 450 or 500℃. With two-step pyrolysis some products with high content can be obtained in the first or second step, respectively, such as acetic acid, furfural, guaiacol, methylbenzene and benzene etc. , thus preliminarily achieving the selective pyrolysis of biomass.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2016年第5期534-539,共6页
Journal of Fuel Chemistry and Technology
基金
国家重点基础研究发展规划(973计划
2013CB228103)
中国科学院重点部署项目(KGZD-EW-304-3)资助~~
