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

Paper ID Volume ID Publish Year Pages File Format Full-Text
47108 46459 2011 8 PDF Available
Title
The ammonia selective catalytic reduction activity of copper-exchanged small-pore zeolites
Abstract

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 °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.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideResearch highlights▶ Copper-exchanged small-pore zeolites perform much better than Cu-ZSM-5. ▶ An optimal copper loading exists providing both high SCR activity and stability. ▶ Changing the heteroatom in the framework affects the hydrothermal stability. ▶ Cu-SSZ-13 and Cu-SAPO-34 show exceedingly high NH3-SCR activity.

Keywords
Small-pore zeolites; Selective Catalytic Reduction; NH3-SCR; Copper Zeolites; SSZ-13; SAPO-34
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The ammonia selective catalytic reduction activity of copper-exchanged small-pore zeolites
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis B: Environmental - Volume 102, Issues 3–4, 22 February 2011, Pages 441–448
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
Full-text PDF Download
Online Support
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