Process for the production of acrolein

Organic compounds -- part of the class 532-570 series – Organic compounds – Oxygen containing

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568449, 568485, C07C 4552

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active

053877209

ABSTRACT:
A process for the production of acrolein by dehydration of glycerol in the liquid phase or in the gaseous phase, in each case on acidic solid catalysts, is described. Compared with previously known processes, the space-time yield and catalyst service life may be surprisingly increased with higher selectivity by treating a glycerol-water mixture with a glycerol content of 10 to 40 wt. % at 180.degree. to 340.degree. C. (liquid phase) or at 250.degree. to 340.degree. C. (gaseous phase) on a solid catalyst with an H.sub.o value (Hammett acidity function) of less than +2, preferably less than -3.

REFERENCES:
patent: 1672378 (1928-06-01), Freund
patent: 2042224 (1934-06-01), Groll
patent: 2558520 (1951-06-01), Hoyt et al.
Studies in surface science and catalysis, vol. 51, 1989: "New solids acids and bases, their catlytic properties" by K. Tanabe et al., Chapter 1 (pp. 1-3) and chapter 2 (pp. 5-9) were cited on page 7, line 7-10 of the present application.
Organic Syntheses I pp. 15-18 (1964) was cited on page 1, lines 9-10 of the present application.
Ramayya, S., et al., "Acid-catalysed dehyfration of alcohols in supercritical water", Fuel (Oct. 1987) vol. 66, pp. pp. 1364-1371) were cited on page 2, line 20 of the present application.
Chem. Abstracts 110 (6):41924n (Dao, Le H. et al. ACS Symp. Ser., 376 (Pyrolysis Oils Biomass), 328-341 (1988) was cited on page 3, lines 14-16 of the present application.
Chemical Abstracts 101 (4):32598w (Ishikawa Koichi et al., Bunseki Kagaku 32 (10) E 321-E 325) was cited on page 2, lines 5-7 of the present application.

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