期刊论文

中文

中南林业科技大学学报

1673-923X

2017

37

8

114-121

10.14067/j.cnki.1673-923x.2017.08.019

中国博士后科学基金特别资助项目（2013T60786） 教育部留学归国人员科研启动基金（2015） 湖南省青年骨干教师培养对象资助课题（2014）

本校为第一机构

为开发生物质导电材料,以木质素为原料,氯化铁为催化剂,通过热解炭化工艺制备木质素炭,并利用响应面法对影响炭产率的4个主要因素即载气流量、升温速率、炭化温度、炭化时间进行了优化。研究结果表明,利用Design-Expert软件的Box-Behnken设计建立的二次多项式模型较显著,当载气流量为1.26 L/min,升温速率为20 ℃/min,炭化温度为700 ℃,炭化时间为60 min时,炭产率达到最大值46.04%,与实际值45.86%较为接近,说明优化结果可信。洗涤处理后的木质素炭呈片层堆积状,其结构类似于石墨微晶炭,电阻率为0.353 Ω·cm。

In order to produce biomass conductive materials, a kind of conductive charcoal was prepared by pyrolysis carbonization of lignin with ferric chloride as catalyst. Four main factors affecting the yield of charcoal, namely the fl ow rate of carrier gas, heating rate, carbonization temperature, and time were optimized by response surface methodology. Experimental results showed that the quadratic polynomial model based on the Box-Bohnken design of Design Expert software was signifi cant, the maximum yield of charcoal was 46.04% at the carrier gas...