The ammonia selective catalytic reduction activity of copper-exchanged small-pore zeolites

被引：571

作者：

Fickel, Dustin W. ^{[1
]}

D'Addio, Elizabeth ^{[1
]}

Lauterbach, Jochen A. ^{[1
,2
]}

Lobo, Raul F. ^{[1
]}

机构：

[1] Univ Delaware, Dept Chem Engn, Ctr Catalyt Sci & Technol, Newark, DE 19716 USA

[2] Univ S Carolina, Dept Chem Engn, S Carolina Ctr Econ Excellence Strateg Environm A, Columbia, SC 29208 USA

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2011年 / 102卷 / 3-4期

关键词：

Small-pore zeolites; Selective Catalytic Reduction; NH3-SCR; Copper Zeolites; SSZ-13; SAPO-34; ISOMORPHOUSLY SUBSTITUTED ZSM-5; DIRECT NO DECOMPOSITION; HIGH-SILICA ZEOLITES; HIGH-THROUGHPUT; PARALLEL ANALYSIS; MOLECULAR-SIEVES; NITRIC-OXIDE; HYDROTHERMAL STABILITY; DENO(X) CATALYSTS; NITROGEN MONOXIDE;

D O I：

10.1016/j.apcatb.2010.12.022

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The NH3-SCR activity of the small-pore zeolites, Cu-SSZ-13, Cu-SSZ-16, and Cu-SAPO-34, is investigated using a high-throughput reactor system. These copper exchanged small-pore zeolites have high SCR activity between 150 and 500 degrees C and are shown to be much more hydrothermally stable than the medium-pore zeolite, Cu-ZSM-5. The degree of copper exchange, the dimensionality of the framework, and heteroatom framework substitution all impact the SCR activity and hydrothermal stability of the materials. Of the small-pore zeolites tested, Cu-SSZ-13 and Cu-SAPO-34 display superior SCR performance, both before and after high-temperature hydrothermal treatment. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：441 / 448

页数：8

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