合成了聚吡咯修饰的 ZSM-5型分子筛(PPy-ZSM-5)材料,并通过傅里叶红外(FT-IR)、透射电镜(TEM)、比表面积测试法(BET)确认了材料的结构特征和表面形貌,证明聚吡咯被成功的修饰在 ZSM-5上。将PPy-ZSM-5作为载体制备了1％AuCl3/PPy-ZSM-5催化剂应用于乙炔氢氯化反应,通过筛选,表现最优的是催化材料1％AuCl3/8PPy-ZSM-1000,在体积空速180 h－1的条件下,乙炔的转化率达到99％。实验结果表明,PPy的存在提高了分子筛表面导电性,提高了载体对 HCl的吸附能力从而抑制了反应过程中 Au3＋被还原成 Au0、金颗粒的团聚以及催化剂的积碳,明显的提高了催化剂的催化表现。
In this study,polypyrrole (PPy)was modified at ZSM-5 zeolite for synthesizing PPy-ZSM-5 materi-als.The materials were characterized using FT-IR,TEM,BET to determine structural and morphological char-acteristics of the sample.The results proved that PPy was successfully deposited onto the surface of ZSM-5 car-rier.PPy-ZSM-5 were by used as carriers to prepare 1%AuCl3/PPy-ZSM-5 catalysts for acetylene hydrochlori-nation.1%AuCl3/8PPy-ZSM-1 000 was optimal catalyst,the conversion rate of acetylene can reach 99%.The results shown that the existence of PPy significantly enhanced catalytic performance by affecting the adsorption of hydrogen chloride,and then inhibiting the conversion of Au3+ to Au0 ,the aggregation of gold particles and the coke deposition during acetylene hydrochlorination.
参考文献
| [1] | Conte M;Carley AF;Attard G;Herzing AA;Kiely CJ;Hutchings GJ.Hydrochlorination of acetylene using supported bimetallic Au-based catalysts[J].Journal of Catalysis,20081(1):190-198. |
| [2] | Haiyang Zhang;Bin Dai;Xugen Wang.Hydrochlorination of acetylene to vinyl chloride monomer over bimetallic Au-La/SAC catalysts[J].Journal of industrial and engineering chemistry,20121(1):49-54. |
| [3] | Zhang, Haiyang;Li, Wei;Li, Xueqin;Zhao, Wei;Gu, Junjie;Qi, Xueyan;Dong, Yanzhao;Dai, Bin;Zhang, Jinli.Non-mercury catalytic acetylene hydrochlorination over bimetallic Au-Ba(II)/AC catalysts[J].Catalysis science & technology,20153(3):1870-1877. |
| [4] | Zhao, Jia;Xu, Jiangtao;Xu, Jinhui;Ni, Jun;Zhang, Tongtong;Xu, Xiaoliang;Li, Xiaonian.Activated-Carbon-Supported Gold-Cesium(I) as Highly Effective Catalysts for Hydrochlorination of Acetylene to Vinyl Chloride[J].ChemPlusChem,20151(1):196-201. |
| [5] | Dai, Bin;Chen, Kun;Wang, Yang;Kang, Lihua;Zhu, Mingyuan.Boron and Nitrogen Doping in Graphene for the Catalysis of Acetylene Hydrochlorination[J].ACS catalysis,20154(4):2541-2547. |
| [6] | Zhang, Chunli;Kang, Lihua;Zhu, Mingyuan;Dai, Bin.Nitrogen-doped active carbon as a metal-free catalyst for acetylene hydrochlorination[J].RSC Advances,201510(10):7461-7468. |
| [7] | Wang, Feng;Wang, Lu;Wang, Jide;Zhao, Yonglu;Wang, Yaling;Yang, Dong.Bimetallic Pd-K/Y-zeolite catalyst in acetylene hydrochlorination for PVC production[J].Reaction kinetics,mechanisms and catalysis,20152(2):725-734. |
| [8] | Marco Conte;Albert F.Carley;Clare Heirene.Hydrochlorination of acetylene using a supported gold catalyst:A study of the reaction mechanism[J].Journal of Catalysis,20072(2):231-239. |
| [9] | Huang, Chaofeng;Zhu, Mingyuan;Kang, Lihua;Dai, Bin.A novel high-stability Au(III)/Schiff-based catalyst for acetylene hydrochlorination reaction[J].Catalysis Communications,2014:61-65. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%