[1]朱 劼,李 丹,丁雪洁,等.温敏高分子修饰氧化石墨烯负载钌催化剂的制备及选择加氢活性[J].常州大学学报(自然科学版),2019,31(06):1-10.
 ZHU Jie,LI Dan,DING Xuejie,et al.A Ru Catalyst Supported on Temperature-Sensitive Polymer Grafted Graphene Oxide and Its Catalytic Activity in Selective Hydrogenation Activity[J].Journal of Changzhou University(Natural Science Edition),2019,31(06):1-10.
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温敏高分子修饰氧化石墨烯负载钌催化剂的制备及选择加氢活性()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
第31卷
期数:
2019年06期
页码:
1-10
栏目:
化学化工
出版日期:
2019-11-28

文章信息/Info

Title:
A Ru Catalyst Supported on Temperature-Sensitive Polymer Grafted Graphene Oxide and Its Catalytic Activity in Selective Hydrogenation Activity
文章编号:
2095-0411(2019)06-0001-10
作者:
朱 劼李 丹丁雪洁窦梦迪刘雯欣鲁墨弘李明时李永昕
(常州大学 石油化工学院,江苏 常州 213164; 常州大学 江苏省绿色催化材料与技术重点实验室,江苏 常州 213164)
Author(s):
ZHU Jie LI Dan DING Xuejie DOU Mengdi LIU Wenxin LU Mohong LI Mingshi LI Yongxin
(School of Petrochemical Engineering, Changzhou University, Changzhou 213164, China; Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou 213164, China)
关键词:
聚(N-异丙基丙烯酰胺) 氧化石墨烯 柠檬醛 选择性加氢
Keywords:
PNIPAM graphene oxide citral selective hydrogenation
分类号:
TQ 612.3; O 643.38
文献标志码:
A
摘要:
利用过硫酸铵引发的自由基聚合反应,在GO表面生长温敏高分子聚(N-异丙基丙烯酰胺)(PNIPAM),得到具有温敏智能表面的复合材料GO-PNIPAM。以其为载体负载钌(Ru)纳米颗粒,制备催化剂Ru/GO-PNIPAM,并采用XRD,TEM,FT-IR,TG,OEA,ICP-AES和XPS等手段对GO-PNIPAM和Ru/GO-PNIPAM进行表征。Ru/GO-PNIPAM在柠檬醛选择性加氢反应中显示出高催化性能。80 ℃下,以Ru/GO-PNIPAM为催化剂的反应速率常数k达0.24 h-1,超过Ru/GO的2倍(0.10 h-1)。当接近完全反应时,Ru/GO-PNIPAM对不饱和醇(包括香叶醇和橙花醇)的选择性为23%,高于Ru/GO(8%)。经计算,以Ru/GO为催化剂,柠檬醛加氢反应的活化能为33 kJ/mol。与之相比,Ru/GO-PNIPAM为催化剂的反应活化能明显降低(26 kJ/mol)。Ru/GO-PNIPAM上Ru的高分散性及对底物的优良吸附性能共同促进其催化性能的提高。
Abstract:
Thermoresponsive poly(N-isopropylacrylamide)(PNIPAM)was firstly grown on graphene oxide(GO)in this thesis by ammonium persulfate initiated radical polymerization. The obtained composite GO-PNIPAM was then employed to prepare Ru catalyst(Ru/GO-PNIPAM). GO materials were characterized by some technologies such as XRD, TEM, FT-IR, TG, OEA, ICP-AES and XPS. Ru/GO-PNIPAM showed the higher catalytic performance in citral hydrogenation. The rate constant k arrived at 0.24 h-1 over Ru/GO-PNIPAM at 80 ℃, much higher than that over Ru/GO(0.10 h-1). The selectivity to geraniol and nerol was 23% over Ru/GO-PNIPAM at nearly complete citral conversion, higher than that over Ru/GO(8%). The reaction activation energy was calculated to be 33 kJ/mol over Ru/GO. In contrast, that over Ru/GO-PNIPAM declined obviously(26 kJ/mol). The high Ru dispersion on Ru/GO-PNIPAM as well as its great adsorption ability to reactants together promoted the improvement on catalytic performance.

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备注/Memo

备注/Memo:
收稿日期:2019-06-05。
基金项目:国家自然科学基金资助项目(21676029,21673024)。
作者简介:朱劼(1977—),男,江苏常州人,博士,副教授。通信联系人:李永昕(1957—),E-mail:liyxluck@126.com
更新日期/Last Update: 2019-12-02