Boron phosphate catalyst for the production of dienes from aldeh

Details Boron phosphate catalyst for the production of dienes from aldeh Boron phosphate catalyst for the production of dienes from aldeh

1985-08-02

1986-05-06

Doll, John

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

Diolefin product

502202, C07C 120

Patent

active

045873720

ABSTRACT:
This invention is concerned with improved boron phosphate dehydration catalysts. More specifically, this invention is directed to a process for the conversion of an aldehyde to a diolefin comprising contacting an aldehyde of 4 to 6 carbon atoms in the vapor phase with a catalyst comprising boron phosphate wherein the boron phosphate has been treated with an ammonium carbonate or bicarbonate salt prior to calcination. This invention is also concerned with a large port catalyst for dehydration reactions wherein the improvement comprises the use of a catalyst with a molar ratio of P/B of about 1.0 modified with from 0.1 to 10 mole percent, based on moles of boron, of a carbonate salt selected from (NH.sub.4).sub.2 CO.sub.3 and NH.sub.4 HCO.sub.3.

REFERENCES:
patent: 3395984 (1968-08-01), Collins
patent: 4524233 (1985-06-01), Hsu et al.
patent: 4547614 (1985-10-01), Vavere
Bol'shakov et al., Prom-st. Sint Kauch. 1980(8), 2-4.

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