文档介绍：第 30 卷第 3 期催化学报 2009 年 3 月
Vol. 30 No. 3 Chinese Journal of Catalysis March 2009
文章编号: 0253-9837(2009)03-0259-06 研究论文: 259~264
碳纳米管负载 Pd/SnO2 催化剂的制备及其催化邻氯硝基苯加氢性能
王闯, 邱介山, 梁长海
大连理工大学化工学院精细化工国家重点实验室炭素材料研究室, 辽宁大连 116012
摘要:采用化学还原法制备了不同 Sn/Pd Ts)负载 Pd/SnO2 催化剂, 并将该催化剂用于邻氯硝基苯(B)
的选择加氢反应. 采用透射电镜、X 射线衍射和电感耦合等离子体技术对所制备的 Pd/Ts 催化剂进行了表征. 结果表
明, Sn/Pd 摩尔比对该催化剂的邻氯硝基苯选择加氢反应性能影响显著. 当 Sn/Pd 摩尔比为 11 时, 催化剂的活性最高, 在常压,
60 oC 反应 60 min, B 转化率为 96%. 该催化剂还具有高的邻氯苯胺(o-CAN)选择性, B 转化率达到 100%时, 脱氯副
产物苯胺选择性小于 5%. 在相同条件下,浸渍法制备的 %Ts 催化剂上脱氯副反应严重, 当 B 完全转化时, o-CAN
选择性只有 22%, 副产物苯胺选择性则高达 78%.
关键词:碳纳米管; 钯; 二氧化锡; 邻氯硝基苯; 选择加氢; 邻氯苯胺
中图分类号:O643 文献标识码:A
Synthesis of Carbon Nanotubes-Supported Pd/SnO2 for the Hydrogenation
of ortho-Chloronitrobenzene
WANG Chuang, QIU Jieshan*, LIANG Changhai
Carbon Research Laboratory, State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University
of Technology, Dalian 116012, Liaoning, China
Abstract: Carbon nanotubes (CNTs)-supported Pd/SnO2 catalysts with different Sn/Pd molar ratios were prepared by the chemical reduction
method, and their catalytic activity was tested using ortho-chloronitrobenzene (B) hydrogenation as a probe reaction. The as-made
Pd/Ts catalysts were characterized by transmission electron microscopy, X-ray diffraction, and inductively coupled plasma tech-
niques. The res