Method for synthesizing crotyl alcohol by converting ethanol through photocatalysis

The invention relates to a method for synthesizing crotyl alcohol by converting ethanol through photocatalysis. The method comprises the steps of adding a semiconductor photocatalyst for modifying a cocatalyst into an ethanol solution of alkali; after magnetically feeding nitrogen for fully replacing oxygen in a system, starting an ultraviolet light source or a visible light source for reacting for 1 to 200h, and converting the ethanol into the crotyl alcohol; after separating the catalyst from a solution, separating the crotyl alcohol from the raw material ethanol to obtain the crotyl alcohol. The method provided by the invention has the advantages that the raw materials are cheap and easy to get, a technological process is simple, the conversion rate is high, and the selectivity is good. 种光催化乙醇转化合成巴豆醇的方法是将修饰助催化剂的半导体光催化剂加入到碱的乙醇溶液中，在磁力通入氮气，充分置换体系中的氧气后，开启紫外光源或可见光源进行反应1-200h，将乙醇转化为巴豆醇，将催化剂与溶液分离后，再将巴豆醇和原料乙醇分离即得到巴豆醇。本发明具有原料廉价易得、工艺过程简单、转化率高以及选择性好的优点。