方法;PROCESS

摘要

本发明揭示一种自包含马来酸酐之原料生产琥珀酸二烷基酯之方法，该方法包括以下步骤：将该液相进料提供至在至少约150℃的温度下操作之反应器；在至少约300psig的压力下，在耐酸触媒及烷醇之存在下，使该进料与氢气接触，其中使马来酸酐之至少一些碳碳双键氢化以形成琥珀酸，及所产生之热量促进其原位酯化成琥珀酸二烷基酯；并自该反应器回收包含琥珀酸二烷基酯之物流。 A process for the production of dialkyl succinate from a feedstock comprising maleic anhydride, said process comprising the steps of providing the feed in the liquid phase to a reactor operated at a temperature of at least about 150℃; contacting said feed with hydrogen at a pressure of at least about 300 psig in the presence of an acid tolerant catalyst and an alkanol wherein at least some of the carbon carbon double bonds of the maleic anhydride are hydrogenated to form succinic acid and that the heat generated promotes esterification to dialkyl succinate acid in situ; and recovering a stream comprising dialkyl succinate from the reactor.