Method for synthesizing plasticizer tri-n-butyl citrate through cooperation between microwaves and 5A molecular sieve

The invention specifically relates to a method for synthesizing the plasticizer tri-n-butyl citrate through cooperation between microwaves and a 5A molecular sieve, belonging to the technical field ofsynthesis of plasticizers. The method comprises the following steps: firstly activating the 5A molecular sieve; then adding the activated 5A molecular sieve, anhydrous citric acid and n-butanol intoa reaction vessel; and carrying out an esterification reaction under microwave irradiation to obtain tri-n-butyl citrate, wherein microwave irradiation power is 100-500 W, microwave irradiation time is 3-7 min, and microwave irradiation temperature is 100-140 DEG C. The method of the invention combines the advantages of both the molecular sieve and a microwave heating technology, and has the characteristics of rapidness, simplicity, high yield, easy purification, no pollution, etc. 本发明属于增塑剂合成技术领域，具体涉及种微波协同5A型分子筛合成增塑剂柠檬酸三正丁酯的方法。所述方法包括以下步骤：先将5A分子筛活化，然后将活化后的5A分子筛、无水柠檬酸和正丁醇加入反应容器，在微波辐照条件下酯化反应得到柠檬酸三正丁酯；其中微波辐照功率为100～500W，微波辐