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Recycling of the catalyst in the etherification process of polyhydric alcohols using a PTC technique

Janus E.

Polish Journal of Chemical Technology

2004

Vol. 6, nr 3

16-20

The conditions of recycling the PT catalyst (tetrabutylammonium salt) for the etherification process of 1,4-butanediol with allyl chloride, carried out in the presence of sodium hydroxide aqueous solution and toluene as a non-polar solvent were investigated. The distribution of the catalyst among the phases and the conditions of the formation of the third liquid phase by changing the composition of the organic and the aqueous phase were searched. Important compounds and their amounts have been established by the etherification process conditions. The effects of base (NaOH), salt (NaCl), 1,4-butanediol, the catalyst concentration and the composition of the organic phase, including toluene, allyl chloride, etherification products (1,4-diallyloxybutane and 4-allyloxybutan-l-ol) on the formation of the third liquid phase were investigated. These results allowed producing the scheme of 1,4-diallyloxybutane synthesis with the recycling of the catalyst.