Patent ID: 8399687
Filing Date: 2013-03-19
Classification: C07C,C07D

Abstract:
1. A process for making a hydrogenated product comprising: (a) providing a clarified fermentation broth containing an ammonium salt of succinic acid; (b) optionally adding at least one of MAS, DAS, SA, NH (c) distilling the broth to form an overhead that comprises water and optionally ammonia and a liquid bottoms that comprises MAS, at least some DAS, and at least about 20 wt % water; (d) cooling and/or evaporating the bottoms, and optionally adding an antisolvent to the bottoms, to attain a temperature and composition sufficient to cause the bottoms to separate into a DAS-containing liquid portion and a MAS-containing solid portion that is substantially free of DAS; (e) separating the solid portion from the liquid portion; (f) recovering the solid portion; (g) hydrogenating the solid portion in the presence of at least one hydrogenation catalyst to produce the hydrogenated product comprising at least one of THF, GBL or BDO; and (h) recovering the hydrogenated product.