Catalyst for exhaust gas purification and system for exhaust gas purification
 A catalyst for exhaust gas purification is capable of purifying the hydrocarbons, nitrogen oxides and carbon monoxide present in the exhaust gas discharged from an internal combustion engine. The catalyst has a carrier and a catalyst layer containing at least one kind of noble metal, Ba and Cs, formed on the carrier. This catalyst for exhaust gas purification is improved in hydrocarbon purification ability for a low-temperature fuel-rich exhaust gas (such as exhaust gas emitted during cold start) of automobile. 
NGK Insulators, Ltd.
Y B Y B B
Y02A B01J Y02T B01D B01J
additional inventional additional inventional inventional
Akira Yukinari Naomi Hiroshige
Takahashi Shibagaki Noda Mizuno