Catalyst compositions and applications thereof

Abstract

In one aspect, structural catalyst bodies comprising one or more gradients of catalytic material are provided herein. In some embodiments, a structural catalyst body described herein comprises an inner partition wall having a first surface and a second surface opposite the first surface, the inner partition wall having a gradient of catalytic material along the width of the inner partition wall.

Description

[0001] relevant application data [0002] This application hereby claims priority to U.S. Provisional Patent Application Serial No. 61 / 371,971, filed August 9, 2010, and U.S. Provisional Patent Application Serial No. 61 / 371,948, filed August 9, 2010, each of which The entire content of is incorporated herein by reference. technical field [0003] The present invention relates to catalyst compositions and, in particular, to catalyst structures for use in industrial or commercial applications. Background technique [0004] The role of nitrogen oxides in the formation of acid rain, tropospheric ozone, and other environmental hazards has led to strict standards to limit emissions of these chemicals. In order to meet these standards, it is generally necessary to remove at least a portion of these oxides present in the exhaust gases from stationary or mobile combustion sources. [0005] Denitrification or Selective Catalytic Reduction (SCR) technologies are commonly applied to c...

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Problems solved by technology

As a result, a reduction in the NOx content of the combustion flue gas may have the effect of increasing SO in the combustion flue gas 3 undesired side effects

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