Chemistry of inorganic compounds – Zeolite
Patent
1999-05-28
2000-02-08
Bell, Mark L.
Chemistry of inorganic compounds
Zeolite
423705, 423706, 423716, 423717, 423335, 423DIG22, 423DIG25, 423DIG29, C01B 33021, C01B 3902, C01B 3940, C01B 3936, C01B 3926
Patent
active
06022519&
ABSTRACT:
A method of manufacturing crystalline microporous material suitable for manufacturing a variety of crystalline microporous material under mild reaction conditions and under safe working environmental conditions by using simple installation. The crystalline microporous materials obtained by the present invention may be used as adsorbent agent, catalyst or separating material. According to the characterizing features of the manufacturing method of the present invention, there are provided a method of using cation compound or amine as crystallizing modifier and using, in combination, raw material including canemite or silicon dioxide and a further method using raw material including silicon dioxide and aluminum salt. The method includes a step of mixing these components, a solid-liquid separating step for separating produced fine particles, and a crystallizing step for crystallizing the separated solid component. The invention achieves improvement in safety, economy and so on, in comparison with the coventionally practiced hydrothermal synthesis method which requires severe reaction conditions of high-temperature, high-pressure and strong alkaline. Further, the method allows freedom in adjustment of the pore diameter and allows a higher proportion of porous structure to be maintained in a product when the material is formed into a molded product.
REFERENCES:
patent: 3094383 (1963-06-01), Dzierzanowsky et al.
patent: 4160011 (1979-07-01), Estes
patent: 5110573 (1992-05-01), Johnson et al.
Kiyozumi Yoshimichi
Mizukami Fujio
Shimizu Shin-ichi
Bell Mark L.
Japan as represented by Director General of Agency of Industrial
Kuboto Corporation
Sample David
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