Versalis S.p.a.

Fabrizio Bordes

Roberto Buzzoni

Alberto Cesana

Maria Angela Mantegazza

Mario Baldassarre

A process for bio-1,3-butanediol purification from a fermentation broth includes the steps of: (a) subjecting the fermentation broth to separation, (b) subjecting the product obtained in step (a) to treatment with ion-exchange resins, (c) subjecting the product obtained in step (b) to a first evaporation, (d) subjecting the product obtained in step (c) to a second evaporation; and (e) subjecting the product obtained in step (d) to a third evaporation, obtaining purified bio-1,3-butanediol. The purified bio-1,3-butanediol can be used to produce bio-1,3-butadiene. Bio-1,3-butadiene can be used as a monomer or as an intermediate to produce elastomers and (co)polymers.

Process for bio-1,3-butanediol purification from a fermentation broth

The invention relates to a process for the production of ethylbenzene which comprises: a reaction step in which benzene is reacted with ethanol, or a mixture of ethanol and ethylene, at a pressure higher than atmospheric pressure, preferably in gaseous phase or in mixed gas-liquid phase, in the presence of a catalytic system containing a zeolite belonging to the BEA family, and a separation step of the product obtained. According to a preferred aspect, ethanol deriving from biomasses is used, in particular ethanol obtained from the fermentation of sugars deriving from biomasses.

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Pettenasco, Italy

Fabrizio Bordes