Process for producing polyol

A process for producing polyol (such as neo-pentyl glycol) is disclosed which comprises reacting formaldehyde and another aldehyde in the presence of a trialkyl amine catalyst and a base promoter to form an aldol condensation reaction product. The base promoter improves removal of nitrogen containing salts prior to hydrogenation of the hydroxyl aldehyde to produce the polyol. The improved processalso reduces trialkyl amine catalyst usage, improves trialkyl amine catalyst recovery, and reduces nitrogen- containing salts prior to hydrogenation. 本发明公开了用于制备多元醇（例如新戊二醇）的方法，其包括使甲醛和另一种醛在三烷基胺催化剂和碱促进剂的存在下反应以形成羟醛缩合反应产物。碱促进剂改进了羟基醛氢化以制备多元醇之前含氮盐的移除。该改进的方法也降低了三烷基胺催化剂的使用、改进了三烷基胺催化剂的回收、和在氢化之前减少了含氮盐。