Synthesis, characterization, and catalytic application of hierarchical SAPO-34 zeolite with three-dimensionally ordered mesoporousimprinted structure

被引：36

作者：

Wang, Jing ^{[1
]}

Yang, Mengfei ^{[1
]}

Shang, Wenjin ^{[1
]}

Su, Xiaoping ^{[1
]}

Hao, Qingqing ^{[1
]}

Chen, Huiyong ^{[1
,2
,3
]}

Ma, Xiaoxun ^{[1
,2
,3
]}

机构：

[1] Northwest Univ Xian, Sch Chem Engn, Xian 710069, Shaanxi, Peoples R China

[2] Northwest Univ Xian, Minist Educ Adv Use Technol Shanbei Energy, Chem Engn Res Ctr, Xian 710069, Shaanxi, Peoples R China

[3] Northwest Univ Xian, Shaanxi Res Ctr Engn Technol Coal Convers, Xian 710069, Shaanxi, Peoples R China

来源：

MICROPOROUS AND MESOPOROUS MATERIALS | 2017年 / 252卷

基金：

高等学校博士学科点专项科研基金;

关键词：

Hierarchical zeolite; SAPO-34; Mesopore size control; Confined space synthesis; Methanol to olefin; SUPERIOR MTO PERFORMANCE; CONFINED SPACE SYNTHESIS; TO-OLEFIN CONVERSION; METHANOL CONVERSION; LIGHT OLEFINS; IMPRINTED ZEOLITES; POROUS MATERIALS; MOLECULAR-SIEVE; DEACTIVATION; CRYSTALS;

D O I：

10.1016/j.micromeso.2017.06.012

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Hierarchical SAPO-34 zeolites with three-dimensionally ordered mesoporous-imprinted structure (3DOm-i SAPO-34) were first confined synthesized within three-dimensionally ordered mesoporous carbons by multiple hydrothermal (MHT) treatments. With perfect structure replication, the obtained 3DOm-i SAPO-34 zeolite particles exhibited unique ordered structures consisting of primary spherical elements of sizes determined by mesopore cages of the corresponding carbon templates, and the sizes of mesopores constituted by the adjacent spherical elements can be precisely tuned from 5.5 to 13.0 nm by varying the 3DOm carbon. The as-synthesized hierarchical 3DOm-i SAPO-34 catalysts showed superior catalytic performance in the MTO reaction with prolonged catalytic lifetime and significant improvement of selectivity for light olefins (ethylene and propylene) compared to the conventional microporous SAPO34. (C) 2017 Elsevier Inc. All rights reserved.

引用

页码：10 / 16

页数：7

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