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Oxidation of propane over a diesel exhaust catalyst
Author(s) -
Wanke Sieghard E.
Publication year - 1973
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450510410
Subject(s) - propane , catalysis , activation energy , diesel fuel , diesel particulate filter , diesel exhaust , diesel exhaust fluid , diffusion , reaction rate , chemistry , exhaust gas , analytical chemistry (journal) , materials science , thermodynamics , organic chemistry , physics
The oxidation of propane, over a concentration range of 0.30 to 1.04 mole % in air was investigated over a commercial diesel exhaust catalyst consisting of CuO, Cr 2 O 3 and Pd supported on Al 2 O 3 . The rate of reaction was correlated by a first order, irreversible rate function; the resulting pre‐exponential factor and activation energy were 3.15 × 10 7 cc/g‐sec and 21.3 kcal/gmole, respectively. At high temperatures the reaction rate became influenced by pore diffusion. A temperature of 675°K was required to obtain 50% propane conversion. It was concluded that this catayst is unsuitable for catalytic mufflers on diesel buses since the measured value of diesel exhaust temperatures at the cataytic muffler inlet is significantly less than 675°K.