Mitsubishi Chemical Corporation

The University of Tokyo

Zhendong Liu

Kazunori Oshima

Takahiko Takewaki

Tatsuya Okubo

Daisuke Nishioka

Toru Wakihara

Provided is a method for continuous production of zeolite in which a starting material is continuously supplied to a tubular reactor to produce an aluminophosphate zeolite that contains, in the framework structure, at least aluminum atoms and phosphorus atoms or an aluminosilicate zeolite having 5&#x2264;SiO/AlO&#x2264;2000. The tubular reactor is heated using a heat medium; a ratio (volume)/(lateral surface area) of the volume (inner capacity) to the lateral surface area of the tubular reactor is 0.75 cm or smaller; and seed crystals are added to the starting material. Through using a small-diameter tubular reactor and heating with a heat medium, it becomes possible to heat sufficiently the entirety of a starting material (zeolite precursor gel) in a short time, and to allow reaction to proceed at a high rate. The occurrence of irregular pressure fluctuations during continuous production of the zeolite can be prevented by adding seed crystals.

Growing community of inventors

Tokyo, Japan

Zhendong Liu