固定床中甘油催化重整制氢.pdf

油化
2013年第42卷第11期
PETROCHEMICAL TECHNOLOGY
固定床中甘油催化重整制氢
刘少敏,储磊',陈明强,杨忠连,张晔,葛建华
(1.安徽理工大学地球与环境学院,安徽淮南232001;2.安徽理工大学化学工程学院,安徽准南232001)
摘要]以白云石为载体,采用共沉淀法制备了一系列Ni基催化剂,选取甘汕作为生物质裂解油的模拟物,在固定床反应器
中进行甘油重整制氢反应,探索了催化重整制氢反应条件和反应规律。采用XRD和SEM方法对催化剂进行了表征,并通过
G方法分析了催化剂的积碳情况。实验结果表明,在NiDM(DM表示白云石)催化剂中添加氧化物MgO或MoO3可提高催化
剂的活性,有效降低碳的沉积速率。选择NiMo-MgO-DM催化剂,以气体产物中H2,CO,CHL,CO2的含量为指标,考察了
反应温度、水蒸气与甘油中碳的摩尔比(水碳比)和进料空速对甘油重整制氢反应的影响,获得的较佳反应条件为:反应温度
650~700℃、水碳比8~10、进料空速2.4~3.6h。在此条件下,气体产物中H2含量能达到74%(x)以上。
[关键词]甘油;催化重整;制氢;镍基催化剂
文章编号]1000-8144(2013)11-1197-05
[中图分类号]TQ115,2
[文献标志码]A
Hydrogen Production by Catalytic Steam Reforming of Glycerol in a Fixed Bed
Lin Shaomin, Chu Lei, Chen Minggiang', Yang Zhonglian, Zhang Ye, Ge Jianhua
(1. School of Earth Science and Environmental Engineering, Anhui University of Science and Technology, Huainan Anhu 232001
China; 2. School of Chemical Engineering, Anhui University of Science and Technology, Huainan Anhui 232001, China)
Abstract J A series of Ni-based catalysts were prepared by co-precipitation method with
dolomite(DM )as support. The catalytic steam reforming of glycerol which was selected as a model
compound of bio-oil from biomass pyrolysis was studied over the Ni-based catalysts in a fixed bed
reactor. The catalysts were characterized by means of XRD and SEM, and the carbon deposition was
analyzed by means of TG. The results showed that the addition of Mgo and/or Moo to the Ni-dolomite
catalysts could improve the catalyst activity greatly and reduce the rate of the carbon deposition
effectively. The influences of temperature, ratio of steam to carbon((H O): n(C))and feeding space
velocity on the catalytic steam reforming were investigated. Under the optimum conditions of Ni/Mo
MGO-DM as the catalyst, reaction temperature 650-700C, n(HO): n(c8-10 and feeding space
velocity 2. 4-3.6 h, the H content in the products could reach more than 74%(x)
I Keywords glycerol; catalytic reforming; hydrogen production; nickel-based catalyst
全球性能源短缺与环境惡化日益严重,保护关研究,目前的研究热点集中在催化剂的研究,合
人类赖以生存的自然环境成为急需解决的问题。大适的催化剂能抑制甲烷的生成,提高H2的产率。用
量进口石油对我国的能源安全构成严重威胁,因此于甘油催化重整制氢的催化剂主要有天然矿石类催
开发新能源和可再生能源成为弥补国内石油短缺的化剂和人工合成催化剂,人工合成催化剂具有较高
重要途径。生物柴油以其可再生、清洁和安全三大
优势获得了世界各国的广泛关注,但利用生物油脂[收稿日期]2013-04-18;L修政稿月期」2013-06-02
生产生物柴油副产10%左右的甘油,造成大量的浪『作者筒介」刘少敏(192-),男,安徽省宿松县人,博士,副
费。甘油是生物质快速裂解油的模型物,利用甘油
教授,电话13855456867,电邮shmliu(@aust.edu.cn
基金项目国家自然科学基金项目(21376007);安徽省教育厅
催化重整制氢是目前可再生能源发展的一条重要途自然科学基金重点项目(KPO12A0)0;女做理工大学巾青年学术
径。国内外许多学者对甘油催化重整制氢进行了相骨干项目;高校国家级大学生创新创业训练计划(20121036100)