Process for synthesizing a zeolite catalyst on a pH controlled s

Details Process for synthesizing a zeolite catalyst on a pH controlled s Process for synthesizing a zeolite catalyst on a pH controlled s

1984-07-13

1989-07-25

Pal, Asok

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

585639, 423328, 423329, C07C 120

Patent

active

048516058

ABSTRACT:
A process for preparing a zeolite, e.g. ZSM-5, under controlled conditions of pH adjustment with an acid; SiO.sub.2 /Al.sub.2 O.sub.3 mole ratio, and in the substantial absence of alkali metal cations, is disclosed, as well as a process for using the same to synthesize olefins from methanol and/or dimethyl ether.

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D. M. Bibby et al., "NH.sub.4.sup.+ -Tetraalkyl Ammonium Systems in the Synthesis of Zeolites", Nature, vol. 285, (May 1980), pp. 30-31.
E. Kikuchi et al., "Preparation of Zeolite Catalyst for Synthesis of Lower Olefins from Methanol", J. Japan Petrol. Inst. 24(5), 275-280, (1981).
Z. Gabelica et al., "Synthesis and Characterization of ZSM-5 Type Zeolites", Applied Catalysis, 5, (1983), 227-248.
K. Chao et al., "Kinetic Studies on the Formation of Zeolite ZSM-5", J. Chem. Soc., Faraday Trans. 1, 1981, 77, 547-555.
A. Nastro et al., "Growth of Larger Crystals of ZSM-5 in the System 4(TPA).sub.2 O--38(NH.sub.4).sub.2 O--x(Li, Na K).sub.2 O--Al.sub.2 O.sub.3 --59SiO.sub.2 --75OH.sub.2 O", Zeolites, 1983, vol. 3, Jan.
H. Nakamoto et al., "Crystallization of Zeolite ZSM-5 from Single Cation System", Chemistry Letters, pp. 1739-1742, 1981.
Synthesis and Growth of Zeolite (NH.sub.4,TPA)-ZSM-5; N. Ghamami & L. Sand; Zeolites, vol. 3, pp. 155-162, (Apr. 1983).

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