Al2O3催化甘油水蒸气重整制氢.pdf

石油化工
2015年第44卷第6期
PETROCHEMICAL TECHNOLOGY
689
Co-La-Ni/Al2O3催化甘油水蒸气重整制氢
张志凯,周慧珍',李晓阳2,许庆利,张素平,颜涌捷
(1.华东理工大学资源与环境工程学院,上海200237;2.上海华西化工科技有限公司,上海201315
L摘要]以浸渍法制备的Co-La-Ni/A2O2为催化剂,在固定床反应器中对生物质甘油水蒸气重整制氢反应进行了研究;考察
了反应温度、重时空速及进料中水与甘油中碳的摩尔比(水碳比)对反应的影响,同时考察了催化剂的稳定性并对积碳进行
分析。实验结果表明,氢产率、潜在氢产率和气相碳转化率随重时空速的增加而逐渐下降,随温度的升高而增大;水碳比的
增加在一定程度上有助于促进氢产率、潜在氢产率和气相碳转化率的提高;随反应时间的延长,催化剂的活性因积碳的产生
略有降低,反应20h后趋于稳定。在温度为700℃、水碳比为3、重时空速为2.5h'的条件下,氢产率和潜在氢产率分别达到
11815g/kg和13641gkg,气相碳转化率达到96.36%。对于甘油水蒸气重整制氢反应,Co-La-NiA20.催化剂其有较好的催化
作用及稳定性。
关键词生物质甘油;金属催化剂;催化重整;制氢
文章编号11000~-8144(2015)06-0689-06
[中图分类号]TQ116.2
[文献标志码]A
Hydrogen Production by Glycerol Steam Reforming over CO-LA-NI/A20, Catalyst
Zhang Zhikai, Zhou Huizhen, Li Xiaoyang, Xu Qingli, Zhang Suping Yan Yongiie
(1. Research Center for Biomass Energy, East China University of Science and Technology, Shanghai 200237, China;
2. Shanghai Huaxi Chemical Industry Science& Technology Co Ltd, Shanghai 201315, China
L Abstract J The CO-LA-NI/A1, O, catalyst was prepared by impregnation. Hydrogen production by the
steam reforming of glycerol over the CO-LA-NI/A1, O, catalyst was studied in a fixed bed reactor. The
effects of temperature, WHSV and mole ratio of H,O to C in glycerol(S/C) on the reforming were
investigated. The stability of the catalyst and the carbon deposition on the catalyst were researched
phase gradually decreased with the increase of WHSV. With temperature rise, the hydrogen yl o
The results showed that the hydrogen yield potential hydrogen yield and carbon conversion in the ga
potential hydrogen yield and carbon conversion in the gas phase gradually increased. Increasing
S/C could promote the steam reforming of glycerol to a certain extent. The hydrogen yield, potential
hydrogen yield and carbon conversion reached 118l5 g/kg, 136.41 g/kg and 96.36% under the
conditions of 700, and HS 2. 5 h.The O-LAN/A1 O catalyst showed a good stability too
I Keywords J biomass glycerol; metal catalyst; catalytic reforming; hydrogen production
生物质能源因其可再生性、绿色性及安全质快速裂解油的模型物,对其催化重整制氢是一条
性,被世界各国高度重视。生物质能源的利用是有效利用途径。目前,国内外许多学者对甘油催
推进能源代替、堿轻环境压力和解决能源紧张的化重整制氢进行了研究,主要针对催化剂的应用及
理想途径之一日。生物柴油作为生物质能源的形式开发,合适的催化剂能抑制CH的生成,提高氢气
之一,近年来在全球范围内得以快速发展2。随着的产率8-。 Adhika等制备了一系列Ni基催化
生物柴油技术的发展,其主要副产品粗甘油的剂,相对于 Ni/Mgo和Ni/TiO催化剂, Ni/Cec2催化
产量逐年递增并造成大量的浪费?。甘油是生物剂具有较好的催化重整制氢效果。Kim等1将Ni-
[收稿日期】2014-12-05;[修改稿日期]2015-03-07。
[作者简介]张志凯(1989~),男,贵州省贵阳市人,硕士生,电话18818237366,电邮kaizzkai@!63.com。联系人:许庆利,电话
1348236456,电邮xuqingli'2001@163.com。
[基金项目]国家自然科学基金项目(21376084);中国科学院可再生能源重点实验室开放基金项目(y207kb101)