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浙江大学学报(工学版)
浙江大学学报(工学版)  2017, Vol. 51 Issue (12): 2451-2458    DOI: 10.3785/j.issn.1008-973X.2017.12.019
化学工程、控制工程     
水蒸气处理对ZSM-5催化剂及甲醇制丙烯反应的影响
孟嘉辉, 廖祖维, 蒋斌波, 黄正梁, 王靖岱, 阳永荣
浙江大学 化学工程联合国家重点实验室 化学工程与生物工程学院, 浙江 杭州 310027
Influence of steam treatment on ZSM-5 catalyst and MTP reaction
MENG Jia-hui, LIAO Zu-wei, JIANG Bin-bo, HUANG Zheng-liang, WANG Jing-dai, YANG Yong-rong
State Key Laboratory of Chemical Engineering, College of Chemical and Biochemical Engineering, Zhejiang University, Hangzhou 310027, China
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摘要：

论证采用水蒸气处理手段模拟工业多周期催化剂的可行性.采用XRD、NH3-TPD等表征手段，研究经水蒸气处理的ZSM-5催化剂在孔道结构和酸性质方面的变化规律及其与工业多周期催化剂的异同，考察水蒸气处理条件对反应性能的影响.结果表明，经高温水蒸气处理后，催化剂的结晶度明显下降，总比表面积显著降低，介孔孔径分布发生变化，酸强度和酸量亦呈下降趋势.随着催化剂脱铝程度的加深，在主产物丙烯的选择性不断下降的同时，氢转移、芳构化等副反应受到明显抑制，而催化剂的抗积炭性能得到提升.
Abstract:

The method of steam treatment used to simulate multi-cycle catalysts was proved to be feasible. A series of characterization methods including XRD, NH3-TPD were used to investigate the change law of ZSM-5 catalyst after steam treatment in aspects of porous structure and acidity, and the results were compared with the industrial multi-cycle catalysts to see their similarities and differences. The effect of steam treatment conditions on reaction performance was also considered. Results show that, after high temperature steam treatment, the crystallinity of the catalyst decreases obviously, the outer surface area of the catalyst decreases significantly, the pore size distribution of mesopore changes, and the acid strength and acid density of the catalysts is on a declining curve. With the deepening of the catalyst's dealumination degree, the selectivity of the main product, propylene, falls constantly, meanwhile, side reactions like hydrogen transfer, aromatization are significantly inhibited, and the catalyst's resistance to carbon deposition gets promoted.
收稿日期: 2017-03-05 出版日期: 2017-11-22
CLC:  TQ032.4  
基金资助:

国家“863”高技术研究发展计划资助项目（2012AA030304）；国家国际科技合作专项基金资助项目（2015DFA40660）.
通讯作者: 廖祖维,男,副教授,博士.orcid.org/0000-0001-9063-1049.     E-mail: liaozw@zju.edu.cn
作者简介: 孟嘉辉(1991-),男,硕士生,从事催化反应工程研究.E-mail:mengjh@zju.edu.cn
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引用本文:

孟嘉辉, 廖祖维, 蒋斌波, 黄正梁, 王靖岱, 阳永荣. 水蒸气处理对ZSM-5催化剂及甲醇制丙烯反应的影响[J]. 浙江大学学报(工学版), 2017, 51(12): 2451-2458.

MENG Jia-hui, LIAO Zu-wei, JIANG Bin-bo, HUANG Zheng-liang, WANG Jing-dai, YANG Yong-rong. Influence of steam treatment on ZSM-5 catalyst and MTP reaction. JOURNAL OF ZHEJIANG UNIVERSITY (ENGINEERING SCIENCE), 2017, 51(12): 2451-2458.

链接本文:

http://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2017.12.019    或    http://www.zjujournals.com/eng/CN/Y2017/V51/I12/2451

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