Journal
CATALYSIS LETTERS
Volume 112, Issue 3-4, Pages 181-186Publisher
SPRINGER
DOI: 10.1007/s10562-006-0200-1
Keywords
sol-gel method; catalysts; NO reduction with CO; catalytic active complex
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Mono - (Ag/SiO2, Pd/SiO2) and bimetallic (Ag+Pd/SiO2) catalysts have been obtained via sol-gel method from tetra-ethoxy-silane (TEOS) and their activity in reduction of Nitric oxide (NO) with carbon monoxide (CO) has been investigated. The highest activity in the process of reduction of NO with CO possesses the sample Ag + Pd/SiO2. It has been found that the sol-gel method for preparation of bimetallic catalysts allows the formation of various catalytic active centers (CAC) which leads to high activity in reaction of NO reduction. The presence of Ag2O and PdO in these CAC allows the elimination of NO. The process of this elimination includes reduction of NO with CO at temperatures up to 200 degrees C as well as direct decomposition of NO at higher temperatures.
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