Please wait a minute...
Acta Physico-Chimica Sinica  1994, Vol. 10 Issue (03): 247-253    DOI: 10.3866/PKU.WHXB19940311
Article     
The States of Zinc in ZnZSM-5 Zeolites and their Catalysis
She Li-Qin, Wang Duo-Cai, Li Xuan-Wen, Liu Xing-Yun, Han Ming
Department of Chemistry, Peking University, Beijing 100871; Department of Chemistry, Sichuan Normal College, Nanchong 637002
Download:   PDF(1301KB) Export: BibTeX | EndNote (RIS)      

Abstract  

NH_3-TPD and pyridine adsorption IR spectroscopy techniques have been used to study the zinc states in ZnHZSM-5 zeolite containing various zine content. The results indicate that, in addition to two desorption peaks for HZSM-5 zeolite located at about 533 and 733 K, two new peaks located at about 573 and 873 K were observed. These new peaks are believed to be associated with two kinds of zinc sites designated by L_1, L_2. The adsorbed ammonia amount of L_2 corresponds to the amount of L_(1616) acid characterized by pyridine adsorption IR spectra for ZnHZSM-5 zeolite with various zinc contents. It is possible that there are two kinds of zinc states in ZnHZSM-5 zeolite. One kind of them is ZnO species with weak acidity, the other is ZnOH~+ species with strong acidity which can promote the activity and has an effect on stability of activity for aromatization of propane.



Key wordsZnZSM-5      Propane      Aromatization      NH3-TPD      Pyridine adsorption IR spectra      Zeolite     
Received: 30 July 1992      Published: 15 March 1994
Corresponding Authors: She Li-Qin   
Cite this article:

She Li-Qin, Wang Duo-Cai, Li Xuan-Wen, Liu Xing-Yun, Han Ming. The States of Zinc in ZnZSM-5 Zeolites and their Catalysis. Acta Physico-Chimica Sinica, 1994, 10(03): 247-253.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB19940311     OR     http://www.whxb.pku.edu.cn/Y1994/V10/I03/247

[1] LIU Changjiang, MA Hongwen, ZHANG Pan. Thermodynamics of the Hydrothermal Decomposition Reaction of Potassic Syenite with Zeolite Formation[J]. Acta Physico-Chimica Sinica, 2018, 34(2): 168-176.
[2] WEI Chun-Lei, GAO Jie, WANG Kai, DONG Mei, FAN Wei-Bin, QIN Zhang-Feng, WANG Jian-Guo. Effect of Hydrogen pre-treatment on the catalytic properties of Zn/HZSM-5 zeolite for ethylene aromatization reaction[J]. Acta Physico-Chimica Sinica, 2017, 33(7): 1483-1491.
[3] DU Jun, WU Xiang-Ying, PAN Xing-Peng, YU Jiang. Oxygenation and Oxidation Desulfurization Properties of CeO2/NaY Catalysts[J]. Acta Physico-Chimica Sinica, 2016, 32(9): 2337-2345.
[4] HU Si, ZHANG Qing, GONG Yan-Jun, ZHANG Ying, WU Zhi-Jie, DOU Tao. Deactivation and Regeneration of HZSM-5 Zeolite in Methanol-to-Propylene Reaction[J]. Acta Physico-Chimica Sinica, 2016, 32(7): 1785-1794.
[5] QIU Song-Bai, WENG Yu-Jing, LIU Qi-Ying, MA Long-Long, ZHANG Qi, WANG Tie-Jun. Preparation of Highly Dispersed Co/SiO2 Catalyst Using Ethylene Glycol and Its Application in Vapor-Phase Hydrogenolysis of Ethyl Lactate to 1,2-Propanediol[J]. Acta Physico-Chimica Sinica, 2016, 32(6): 1511-1518.
[6] SUN Li-Yuan, ZHANG Ya-Fei, GONG Yan-Jun. Structural Features and Application of Micro-Microporous Composite Zeolites[J]. Acta Physico-Chimica Sinica, 2016, 32(5): 1105-1122.
[7] ZOU Jing, FAN Zhi-Lin, JIANG Li-Sha, ZHOU Dan-Hong. Theoretical Study of the Solvent Adsorption on Ti-Peroxo Active Center in Ti-MWW Zeolite[J]. Acta Physico-Chimica Sinica, 2016, 32(4): 935-942.
[8] ZHAO Shu-Heng, LANG Lin, JIANG Jun-Fei, YIN Xiu-Li, WU Chuang-Zhi. Synthesis and Low-Temperature Detemplation of High-Silica MFI Zeolite Membranes[J]. Acta Physico-Chimica Sinica, 2016, 32(2): 519-526.
[9] ZHAO Zhen-Chao, ZHANG Wei-Ping. Two-Dimensional Layered Zeolite Precursors: Syntheses, Modifications and Catalytic Applications[J]. Acta Physico-Chimica Sinica, 2016, 32(10): 2475-2487.
[10] ZHU Shan-Hui, WANG Jian-Guo, FAN Wei-Bin. Advances in Catalytic Hydrogenolysis of Glycerol to Fine Chemicals[J]. Acta Physico-Chimica Sinica, 2016, 32(1): 85-97.
[11] XU Ke, CHENG Yi, SUN Bo, PEI Yan, YAN Shi-Run, QIAO Ming-Hua, ZHANG Xiao-Xin, ZONG Bao-Ning. Fischer-Tropsch Synthesis over Skeletal Co@HZSM-5 Core-Shell Catalysts[J]. Acta Physico-Chimica Sinica, 2015, 31(6): 1137-1144.
[12] ZHAO Shu-Heng, LANG Lin, YIN Xiu-Li, YANG Wen-Shen, WU Chuang-Zhi. TPAOH Template Removal from High-Silica ZSM-5 by Low-Temperature Hydrocracking[J]. Acta Physico-Chimica Sinica, 2015, 31(4): 793-799.
[13] ZHAO Feng-Wei, SHEN Mei-Yu, WANG Lin, DU Chang-Hai. Preparation of Amorphous Co-B/γ-Al2O3 Catalyst and Its Performance in Catalytic Liquid Phase Hydrogenation of Ethyl Lactate[J]. Acta Physico-Chimica Sinica, 2015, 31(3): 527-532.
[14] LONG Jin-Xing, YUAN Zheng-Qiu, MA Hao, SHU Ri-Yang, LI Xue-Hui. Catalytic Synthesis of Trimethylolpropane in the Presence of Basic Ionic Liquid[J]. Acta Physico-Chimica Sinica, 2015, 31(2): 337-343.
[15] ZHANG Lan-Lan, SONG Yu, LI Guo-Dong, ZHANG Shao-Long, SHANG Yun-Shan, GONG Yan-Jun. ZSM-5 Zeolite with Micro-Mesoporous Structures Synthesized Using Different Templates for Methanol to Propylene Reaction[J]. Acta Physico-Chimica Sinica, 2015, 31(11): 2139-2150.