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Epitaxial Growth of Layered-Bulky ZSM-5 Hybrid Catalysts for the Methanol-to-Propylene Process
被引:25
|作者:
Chen, Huiyong
[1
,2
,3
]
Shan, Wenjin
[1
]
Yang, Chenbiao
[1
]
Liu, Baoyu
[4
]
Dai, Chengyi
[1
,2
,3
]
Zhang, Jianbo
[1
,2
,3
]
Hao, Qingqing
[1
,2
,3
]
Sun, Ming
[1
,2
,3
]
Ma, Xiaoxun
[1
,2
,3
]
机构:
[1] Northwest Univ, Minist Educ Adv Use Technol Shanbei Energy, Shaanxi Res Ctr Engn Technol Clean Coal Convers, Sch Chem Engn, Xian 710069, Shaanxi, Peoples R China
[2] Northwest Univ, Minist Educ Adv Use Technol Shanbei Energy, Shaanxi Res Ctr Engn Technol Clean Coal Convers, Chem Engn Res Ctr, Xian 710069, Shaanxi, Peoples R China
[3] Collaborat Innovat Ctr Dev Energy & Chem Ind Nort, Int Sci & Technol Cooperat Base MOST Clean Utiliz, Xian 710069, Shaanxi, Peoples R China
[4] Guangdong Univ Technol, Sch Chem Engn & Light Ind, Guangzhou 510006, Guangdong, Peoples R China
关键词:
DUAL TEMPLATE SYNTHESIS;
HIERARCHICAL ZSM-5;
ACID SITES;
DIRECTED SYNTHESIS;
ZEOLITE H-ZSM-5;
MFI ZEOLITES;
CONVERSION;
HYDROCARBONS;
PERFORMANCE;
MESOPOROSITY;
D O I:
10.1021/acs.iecr.8b05472
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
The hierarchical layered-bulky ZSM-5 (LBZ5) hybrid composites with a core-shell structure were synthesized by epitaxial growth of layered ZSM-5 nanosheets over bulky ZSM-5 crystals. The systematic balance of zeolitic microporosity and interlayered mesoporosity was achieved by elaborate regulation of the ratio between layered phase and bulky phase, resulting in a series of layered-bulky ZSM-5 hybrid composites with the controllable thickness of the layered shell ranging from 98 to 307 rim. The evaluation of catalytic performance in the methanol-to-propylene (MTP) reaction indicated the LBZ5 materials to be candidated catalysts for the MTP process with prolonged catalytic lifetime, superior coke toleration, and enhanced propylene selectivity compared with the parent bulky ZSM-5 (BZ5) and layered ZSM-5 (LZ5) due to their well-retained zeolitic framework, hierarchical meso-/microporosity by the layered-bulky composite structure, and appropriate strong acidity.
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页码:1580 / 1589
页数:10
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