Mitsubishi Chemical Corporation

Japan Technological Research Association of Artificial Photosynthetic Chemical Process

Hiroaki Onozuka

Toshiyuki Yokoi

Masahiro Hara

Masato Yoshioka

A CON zeolite satisfying the following (1) to (2): (1) The framework is CON as per the code specified by the International Zeolite Association (IZA); and (2) It contains silicon and aluminum, and the molar ratio of aluminum to silicon is 0.04 or more.

Zeolite catalyst and method for producing lower olefin

A zeolite catalyst capable of maintaining a high conversion of raw materials over a long period of time, and a method of producing a lower olefin stably over a long period of time using the zeolite catalyst is to be provided. A CON zeolite catalyst containing aluminum (Al) as a constituent element, wherein the CON zeolite catalyst has a ratio ((A/A)&#xd7;100 (%)) of an integrated intensity area (A) of signal intensity in a range from 57.5 ppm to 70 ppm to an integrated intensity area (A) of signal intensity in a range from 45 ppm to 70 ppm is not less than 49.0% when analyzed byAl-MAS-NMR is prepared, and a lower olefin is produced by a MTO process using the zeolite catalyst.

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Chiyoda-ku, Japan

Hiroaki Onozuka