Tosoh Corporation

Ning Chen

Yusuke Naraki

Provided is a &#x3b2;-zeolite that has an SiO/AlOratio of less than 20 but yet is comparable or superior in heat resistance to conventional &#x3b2;-zeolites having SiO/AlOratio of 20 or greater. This &#x3b2;-zeolite is characterized in that: in powder X-ray diffractometry using a CuK&#x3b1;-ray as a ray source, the full width at half maximum of a powder X-ray diffraction peak on the (302) plane is 0.15-0.50 inclusive; and the molar ratio of silica to alumina is less than 20.0. Preferably, the &#x3b2;-zeolite is obtained by a production method which comprises a crystallization step for crystallizing a composition comprising an alumina source, a silica source, an alkali source, a tetraethylammonium cation source and water, characterized in that the composition contains potassium and the molar ratio of potassium to silica exceeds 0.04.

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Yamaguchi, Japan

Ning Chen