Sk Innovation Co., Ltd.

Sk Energy Co., Ltd.

Chang-Q Lee

Yong-Woo Kim

Wha-Sik Min

Tae-Jin Kim

Young-Eun Cheon

Seon-Ju Lim

Joon-Seok Min

Sung-Hyoan Kim

The present invention provides a method for preparing hierarchical zeolite and hierarchical zeolite prepared thereby. The method includes the steps of: carrying out a reaction of a mixture containing water, a silica precursor, an alumina precursor, a pH adjustment material, at least one structure-inducing material, and at least one surfactant; and carrying out drying and heat treatment. The structure-inducing material and the surfactant have different carbon atoms while the surfactant has more carbon atoms than the structure-inducing material.

Hierarchical EU-2 type zeolite having both micropores and mesopores, and preparation method therefor

Disclosed is a catalytic filter for removing soot particulates from diesel engine exhaust, which is comprised of monolithic oxidation catalyst upstream of the catalytic filter, which effectively oxidize gaseous pollutants and volatile organic fractions, and a catalyzed wall-flow filter downstream serving to low temperature combustion of soot particulates collected on the filter. Also, the preparation method of the catalytic filter is provided, including the colloidal mixture solution of platinum group metal salts and other metal salts with a water-soluble polymer and a reducing agent, which is then impregnated on a catalyst support, followed by calcining at high temperatures. In the present invention, use of the catalytic filter provides effective means of abating diesel exhaust pollutant emissions, that is, particulate matter (PM) and gaseous pollutants (HC, CO, NOx).

Catalytic filter for removing soot particulates from diesel engine exhaust and method of preparing the same

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Daejeon, South Korea

Chang-Q Lee