Process for obtaining ethylene from ethanol

Details Process for obtaining ethylene from ethanol Process for obtaining ethylene from ethanol

1986-08-28

1987-06-02

Pal, Asok

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

From nonhydrocarbon feed

585408, 585469, 585639, C07C 124

Patent

active

046706208

ABSTRACT:
This invention relates to a process for obtaining ethylene from anhydrous or aqueous ethanol by means of a catalyst of the zeolite type containing a silicate of a metal M1 having a valence of 3 and 4 and a tetraedric coordination and containing possibly another charge compensating metal M2 selected among the elements of the Ia, Ib, IIa, IIb, IIIa, IIIb, IVa, IVb, Va, VIb, VIIb and VIII groups of the Mendeljev Table. As examples of M2 metals, the alkaline metals, the alkaline-earth metals and the lanthanides may be cited.
According to the invention, anhydrous or aqueous ethanol is contacted with a catalyst of the above type, in which the ratio (M1-M2
)/(Si+M1)(in which II is the valence of said other metal) is at most equal to 1.5%. The temperature of the catalyst and the contact time of ethanol with said catalyst are such that the conversion rate of ethanol into ethylene is about 100% and the carbon selectivity for ethylene is at least equal to about 99% by weight.

REFERENCES:
patent: 4052479 (1977-10-01), Chang et al.
patent: 4134926 (1979-01-01), Tsao et al.
Oudjams et al., Applied Catalysis, vol. 3, 109-115 (1982).
Chemical Abstract 102:9288g (1985).
Chemical Abstract 96:180744j (1982).

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