An oxidation catalyst composite, methods, and systems for the treatment of exhaust gas emissions from a diesel engine are described. More particularly, described is an oxidation catalyst composite including a first oxidation component comprising a first refractory metal oxide support, palladium (Pd) and platinum (Pt); a NO.sub.x storage component comprising one or more of alumina, silica, titania, ceria, or manganese; and a second oxidation component comprising a second refractory metal oxide, a zeolite, and Pt. The oxidation catalyst composite is sulfur tolerant, adsorbs NO.sub.x and thermally releases the stored NO.sub.x at temperature less than 350 C.

The present invention relates to the field of dewaxing of hydrocarbon feeds. More in particular, it relates to the use of alkaline-treated mesoporous zeolites and catalysts encompassing the same for the dewaxing of hydrocarbon feeds. It was found that the zeolites and catalysts of the present invention can significantly reduce cracking of the hydrocarbon feed, and accordingly significantly reduce liquid hydrocarbon feed loss during processes such as dewaxing.

Systems comprising an SCR/ASC catalyst and a component for introducing a nitrogenous reductant into the system upstream of the SCR/ASC catalyst.

Systems comprising an SCR/ASC catalyst and a component for introducing a nitrogenous reductant into the system upstream of the SCR/ASC catalyst.