Targeted Synthesis of Ultrastable High-Silica RHO Zeolite Through Alkali Metal-Crown Ether Interaction

被引：23

作者：

Ke, Quanli ^{[1
,2
]}

Sun, Tianjun ^{[1
]}

Cheng, Hao ^{[1
]}

Chen, Haijun ^{[3
]}

Liu, Xiaowei ^{[1
,2
]}

Wei, Xiaoli ^{[1
,2
]}

Wang, Shudong ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China

[3] Nankai Univ, Dept Elect, 94 Weijin Rd, Tianjin 300071, Peoples R China

来源：

CHEMISTRY-AN ASIAN JOURNAL | 2017年 / 12卷 / 10期

关键词：

alkali metals; crown ether; NOx removal; ultrastable; zeolites; UNIVALENT CATION FORMS; MICROPOROUS MATERIALS; CU-SAPO-34; CATALYSTS; X-RAY; NH3-SCR; NOX; ADSORPTION; CU-SSZ-13; TEMPLATE; INSIGHTS;

D O I：

10.1002/asia.201700303

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

High-silica RHO zeolite was directly synthesized using an alkali metal-crown ether (AMCE) complex as organic structure-directing agent (OSDA). Derived from the UV-vis spectra and zeolite patterns, the crown ethercesium cation interaction was found to have crucial effect on the enhancement of silica content within the zeolite framework. The synthesized RHO zeolites possess up to four times larger silica/alumina ratio (SAR) values than that in their conventional form, which gives them extraordinarily rigid frameworks even after hydrothermal aging under 800 degrees C. Compared to commercial zeolites, copperexchanged high-silica RHO zeolites demonstrate considerably high reaction activity in NOX removal, making them promising candidates for diesel exhaust treatment.

引用

页码：1043 / 1047

页数：5

共 3 条

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