Process for preparing ZSM-5, large pore mordenite and ZSM-35

Details Process for preparing ZSM-5, large pore mordenite and ZSM-35 Process for preparing ZSM-5, large pore mordenite and ZSM-35

1985-08-05

1987-08-18

Doll, John

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

423328, 423330, 502 60, 502 77, 502 78, C01B 3328

Patent

active

046876545

ABSTRACT:
A process for preparing porous crystalline alumino-silicates consisting of bringing into contact, in an aqueous environment, sodium silicate with an aluminum derivative at a molar SiO.sub.2 /Al.sub.2 O.sub.3 ratio greater than or equal to 8, in the presence of one or more alkaline hydroxides at a molar Me.sup.+ /SiO.sub.2 ratio greater than 0.6, where Me.sup.+ represents the alkaline metal or metals, and in the presence of a mineralizing agent, operating at a temperature of between 20.degree. and 100.degree. C., and controlling the molar OH.sup.- /SiO.sub.2 ratio of the resultant mixture at a value of 0.01 and 0.8, the resultant mixture being crystallized at said molar OH.sup.- /SiO.sub.2 ratio in a closed environment for a period of between some hours and 40 days at a temperature of between 100.degree. and 200.degree. C.

REFERENCES:
patent: 3130007 (1964-04-01), Breck
patent: 3701629 (1972-10-01), Maness
patent: 4139600 (1979-02-01), Rollman et al.
patent: 4175114 (1979-11-01), Plank et al.
patent: 4257885 (1981-03-01), Grose et al.
patent: 4275047 (1981-06-01), Whittam
patent: 4285922 (1981-08-01), Audeh et al.
patent: 4452907 (1984-06-01), Ball et al.
Paper No. 9 of 06/063,961 the Patented File of Grose et al, 4,257,885.

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