Al_2O_3催化剂对海洋生物质热解特性的影响  

Effect of Al_2O_3 on Pyrolysis Characteristics of Enteromorpha clathrata

作　　者：赵辉[1,2,3] 闫华晓[3] 刘明[3] 张萌萌[3] 田原宇[3] 秦松[1] 

机构地区：[1]中国科学院海洋研究所实验海洋生物学重点实验室,青岛266071 [2]中国科学院研究生院,北京100049 [3]山东科技大学化工学院生物工程系,青岛266510

出　　处：《中国生物工程杂志》2010年第8期37-41,共5页China Biotechnology

基　　金：山东省高等学校科技计划项目(J09LC22);中国科学院知识创新项目(KZCX2-YW-209);中国科学院实验海洋生物学重点实验室开放基金(Kf201016)资助项目

摘　　要：以海洋生物质浒苔为研究对象,并以玉米秸秆(草类生物质)和锯末(木质类生物质)为对照,采用热重分析方法研究了3种生物质的热解特性,并比较了3种生物质之间的热解差异。结果表明,与玉米秸秆和锯末等典型陆生生物质相比,浒苔的热稳定性最低。此外,以不同浓度氧化铝作为催化剂,用热重分析法对其热解过程进行了研究,利用TG-DTG曲线分析了不同催化剂在不同浓度下对其基本热解特性的影响。结果表明,Al2O3对于3种生物质转化率和最大失重速率有显著的影响,其中Al2O3对锯末和浒苔的转化率降低程度比玉米秸秆较明显。考虑到Al2O3具有可调变的表面酸碱性以及多种不同的晶相结构等优点,Al2O3具有较大的的应用价值。Pyrolysis characteristics of Enteromorpha clathrata was investigated with thermogravimetric analyzer. Simultaneously, cornstalk and sawdust were references. The basic pyrolysis characteristics of the three kinds of biomass and the difference among them are analyzed using TG-DTG curves. The results showed that three stages appeared in this thermal degradation process and Ertteromorpha clathrata has lower initial temperature and peak temperature of pyrolysis than two kinds of terrestrial biomass, which are sawdust and cornstalk. Moreover, with alumina catalyst in different concentration, the pyrolysis process of the three kinds of biomass, which are Enteromorpha clathrata, cornstalk and sawdust, were studied with thermogravimetric analysis method. The basic pyrolysis characteristics and the diffenence effect of the catalyst were analyzed by using TG- DTG curves . The results showed that the catalyst can reduce the conversion of the biomass and the maximum weight loss rate greatly. Specifically, alumina catalyst in 10% concentration has a notable impact on the conversion of the biomass and the maximum weight loss rate. Taking account of the surface of Al2O3 with tunable acidity and a variety of different crystal structure, Al2O3 catalyst has a great application value.

关 键 词：海洋生物质 催化热解 热重分析 

分 类 号：S216[农业科学—农业机械化工程]