Method of preparing crystalline zeolitic aluminosilicates

Details Method of preparing crystalline zeolitic aluminosilicates Method of preparing crystalline zeolitic aluminosilicates

1985-01-24

1986-08-19

Doll, John

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423328, 502 60, 502 77, C01B 3328

Patent

active

046069003

ABSTRACT:
There is disclosed an improvement in the preparation of a crystalline zeolitic aluminosilicate with an atomic Si-to-Al ratio .gtoreq.10 by hydrothermal crystallization from a reaction batch that contains SiO.sub.2 and Al.sub.2 O.sub.3 or their hydrated derivatives or alkali silicates and aluminates along with crystallization accelerators and optionally in the copresence of a quaternary ammonium compound amino or mixture of alcohol and ammonia, in an aqueous and alkaline medium, the improvement wherein an aged but still X-ray amorphous aluminosilicate nucleating gel with an atomic Si-to-Al ratio .gtoreq.10 is added to the reaction batch as a crystallization accelerator.

REFERENCES:
patent: 3709979 (1973-01-01), Chu
patent: 3947482 (1976-03-01), Albers et al.
patent: 4073865 (1978-02-01), Flanigen et al.
patent: 4146584 (1979-03-01), Rollmann
patent: 4175114 (1979-11-01), Plank et al.
patent: 4309313 (1982-01-01), Barret et al.
patent: 4333859 (1982-06-01), Vaughan et al.
patent: 4444738 (1984-04-01), Suzuki et al.
patent: 4511547 (1985-04-01), Iwayama et al.
patent: 4526879 (1985-07-01), Dwyer et al.
Zelimir Gabelica et al., "Synthesis and Characterization of ZSM-5 Type Zeolites III. A Critical Evaluation of the Role of Alkali and Ammonium Compounds" Applied Catalysis 5 (1983) 227-248.
Robert W. Thompson, "Mathematical Analyses of Zeolite Crystallization" Zeolites, 1985, vol. 5, Jul. pp. 202-210.
Kuei-Jung Chao et al., "Kinetic Studies on the Formation of Zeolite ZSM-5" J. Chem. Soc. Faraday Trans. I, 1981, 77, 547-555.
D. A. Jacobs, editor, Structure and Reactivity of Modified Zeolites, Elsevier, N.Y. 1984, pp. 107-123.
Ryszard Mostowicz et al., "Morphological Study of ZSM-5 Grown in the 12Na.sub.2 O/4.5(TPA).sub.2 O System" Zeolites, vol. 3, Jul. 1983, pp. 219-225.

Affiliated with

Also associated with

Rating

Method of preparing crystalline zeolitic aluminosilicates does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of preparing crystalline zeolitic aluminosilicates, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of preparing crystalline zeolitic aluminosilicates will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-393212