Catalyst for purifying exhaust gases
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United States of America Patent
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Nov 11, 1997
Grant Date -
N/A
app pub date -
Jan 16, 1996
filing date -
Jan 17, 1995
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A catalyst for purifying exhaust gases comprises a catalyst carrier made of potassium titanate and a noble metal loaded on the catalyst carrier. The catalyst carrier is substantially free from alumina. This catalyst can oxidize at least hydrocarbons in exhaust gases at a high catalytic activity even at low temperatures, and at the same time can suppress SO.sub.2 from converting into sulfates. This catalyst does not employ substance like alumina exhibiting solid acidity as a catalyst carrier. Further, this catalyst can be used for purifying exhaust gases from diesel engines to suppress particulates and sulfates from being emitted, and to improve conversions of hydrocarbons and carbon monoxide.
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