Stable Zn@ZSM-5 catalyst via a dry gel conversion process for methanol-to-aromatics reaction

被引：18
|
作者：
Liu, Min [1 ]
Cui, Teng [1 ]
Guo, Xinwen [1 ]
Li, Junjie [1 ]
Song, Chunshan [1 ,2 ]
机构：
[1] Dalian Univ Technol, PSU DUT Joint Ctr Energy Res, Sch Chem Engn, State Key Lab Fine Chem, Dalian 116024, Peoples R China
[2] Penn State Univ, PSU DUT Joint Ctr Energy Res, EMS Energy Inst, Dept Energy & Mineral Engn, University Pk, PA 16802 USA
来源：
MICROPOROUS AND MESOPOROUS MATERIALS | 2021年 / 312卷
基金：
中国国家自然科学基金;
关键词：
Dry gel conversion; MTA; ZSM-5; Catalyst stability; Aromatics selectivity; HZSM-5; CATALYSTS; ZSM-5; ZEOLITE H-ZSM-5; PARA-XYLENE; AROMATIZATION; HYDROCARBONS; PERFORMANCE; SIZE; CLUSTERS;
D O I：
10.1016/j.micromeso.2020.110696
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
A unique synthesis route to stabilize zinc species in ZSM-5 zeolite crystals was developed. Firstly, extensive mesoporosity in ZSM-5 was obtained through alkali treatment, after which Zn nanoparticles were introduced into the hierarchical ZSM-5 by impregnation. Then the sample was mixed with SiO2-sol and shaped. Finally, the Zn-fixed ZSM-5 zeolites was obtained by dry gel conversion. By this method, zinc species can be effectively stabilized in zeolite, which can not only improve the aromatic hydrocarbons selectivity, but also increase the stability of the catalyst in the reaction of methanol to aromatics (MTA). The acidity properties and the state of zinc species were studied. It was found that the catalyst possessed more Lewis acid sites and the ratio of Zn(OH)(+)/ZnO was increased after dry gel conversion.
引用
收藏
页数：8
相关论文
共 50 条
  • [1] Zn-P Co-Modified Hierarchical ZSM-5 Zeolites Directly Synthesized via Dry Gel Conversion for Enhanced Methanol to Aromatics Reaction
    Wang, Youhe
    Li, Zhihong
    Dai, Chang
    Du, Ningning
    Li, Tingting
    Wang, Risheng
    Peng, Peng
    Sun, Hongman
    CATALYSTS, 2021, 11 (11)
  • [2] Highly active and stable Zn/ZSM-5 zeolite catalyst for the conversion of methanol to aromatics: effect of support morphology
    Wang, Kai
    Dong, Mei
    Niu, Xianjun
    Li, Junfen
    Qin, Zhangfeng
    Fan, Weibin
    Wang, Jianguo
    CATALYSIS SCIENCE & TECHNOLOGY, 2018, 8 (21) : 5646 - 5656
  • [3] Catalytic properties and deactivation behavior of modified H-ZSM-5 in the conversion of methanol-to-aromatics
    Wang, Yue-lun
    An, Hui-hui
    Ma, Hao
    Zhang, Xue-chun
    Kang, Guo-jun
    Cao, Jing-pei
    ADVANCED POWDER TECHNOLOGY, 2021, 32 (06) : 1869 - 1880
  • [4] The catalytic relevance of hydrothermally substituted Zn on the zeolite ZSM-5 during the methanol-to-aromatics process
    Zhang, Xin
    You, Xinyu
    Wang, Yunfan
    Zhou, Hexun
    Zhou, Xue
    Chowdhury, Abhishek Dutta
    CATALYSIS SCIENCE & TECHNOLOGY, 2025, 15 (01) : 185 - 192
  • [5] First-principles microkinetic analysis of Lewis acid sites in Zn-ZSM-5 for alkane dehydrogenation and its implication to methanol-to-aromatics conversion
    Du, Yu-Jue
    Hu, Wen-De
    Wang, Chuan-Ming
    Zhou, Jian
    Yang, Guang
    Wang, Yang-Dong
    Yang, Wei-Min
    CATALYSIS SCIENCE & TECHNOLOGY, 2021, 11 (06) : 2031 - 2046
  • [6] Improving the dehydrogenation function and stability of Zn-modified ZSM-5 catalyst in methanol-to-aromatics reaction by Ca addition
    Vicente, Hector
    Liu, Chuncheng
    Gayubo, Ana G.
    Castano, Pedro
    Pidko, Evgeny A.
    APPLIED CATALYSIS A-GENERAL, 2024, 683
  • [7] Crafting Zn/nano-H-ZSM-5 catalysts for methanol-to-aromatics conversion: tailoring crystal size and modifying surface electron density
    Zhou, Yang
    Tang, Jiayun
    Chu, Ruizhi
    Hu, Shuang
    Chen, Shaobo
    Nie, Rongrong
    Jiang, Xiaofeng
    Li, Weisong
    Li, Xiao
    Wei, Cheng
    Liu, Huili
    Meng, Xianliang
    JOURNAL OF MATERIALS CHEMISTRY A, 2025,
  • [8] Direct synthesis of Zn-incorporated nano-ZSM-5 zeolite by a dry gel conversion method for improving catalytic performance of methanol to aromatics reaction
    Wang, Youhe
    Xu, Jingwei
    Li, Zhihong
    Guan, Shuai
    Zeng, Yuyang
    Zhao, Guofeng
    Sun, Hongman
    Wen, Fushan
    Subhan, Fazle
    Yan, Zifeng
    JOURNAL OF POROUS MATERIALS, 2021, 28 (05) : 1609 - 1618
  • [9] ZSM-5@Zn/ZSM-5 core@shell nanocrystals as integrated catalysts for efficient methanol conversion into aromatics
    Wang, Zhuo
    Zheng, Huiling
    Meng, Fanhui
    Fu, Tingjun
    Li, Zhong
    FUEL, 2024, 369
  • [10] Correlation between H-ZSM-5 crystal size and catalytic performance in the methanol-to-aromatics reaction
    Yang, Lingzhi
    Liu, Zhiyuan
    Liu, Zhi
    Peng, Wenyong
    Liu, Yunqi
    Liu, Chenguang
    CHINESE JOURNAL OF CATALYSIS, 2017, 38 (04) : 683 - 690
12345