噻二唑衍生物的制备及性能评价  

PREPARATION AND PERFORMANCE EVALUATION OF THIADIAZOLE DERIVATIVES

作　　者：李团乐 刘玉峰[1] 张峻凡 王俊明[1] 薛卫国[1] 安文杰[1] 吕会英 Li Tuanle;Liu Yufeng;Zhang Junfan;Wang Junming;Xue Weiguo;AnWenjiel;Lu Huiying(PetroChina Lanzhou Lubricating Oil R&D Institute,Lanzhou 730060;PetroChina Lanzhou Lubricant Plant)

机构地区：[1]中国石油兰州润滑油研究开发中心,兰州730060 [2]中国石油兰州润滑油厂

出　　处：《石油炼制与化工》2024年第7期119-124,共6页Petroleum Processing and Petrochemicals

基　　金：中国石油润滑油公司项目(2021-08-N3505)。

摘　　要：针对现有噻二唑衍生物制备工艺中废水化学需氧量(COD)极高的问题,探索以去离子水替代乙醇作为反应溶剂,并引入相转移催化剂促进固-液两相反应,开发了制备噻二唑衍生物的绿色环保新工艺;进而,采用红外光谱、液相色谱、质谱等手段对新工艺合成的产物进行了结构表征,采用铜片腐蚀试验和四球试验评价了合成产物的金属腐蚀抑制性能、极压性能和减摩性能。结果表明:采用新工艺合成产物过程中产生的废水COD为2000 mg/L,与传统工艺产生的废水COD(700000 mg/L)相比显著降低,说明新工艺符合绿色环保要求;采用传统工艺和新工艺分别合成了2,5-双(叔壬基二硫代)-1,3,4-噻二唑,其金属腐蚀抑制性能、极压性能、减摩性能相当,且优于市售噻二唑衍生物类金属减活剂T561。In response to the high chemical oxygen demand(COD)of wastewater in the existing preparation process of thiadiazole derivatives,a new green process for preparation of thiadiazole derivatives was developed,using deionized water instead of ethanol as the reaction solvent,and introducing phase transfer catalyst to promote solid-liquid two-phase reactions.The structure of the product synthesized by the new process was characterized by infrared spectroscopy,liquid chromatography,mass spectrometry and other methods,andthe metal corrosion inhibition performance,extreme pressure performance and friction reducing performance of the synthesized product were evaluated by copper plate corrosion test and four ball test.The results showed that the COD of the wastewater produced by the new process was 2000 mg/L,which was significantly lower than that of the traditional process(700000 mg/L),indicating that the new process could meet the requirements of green environmental protection.2,5-bis(tertnonyldithio)-1,3,4-thiadiazole was synthesized by traditional and new processes respectively,their metal corrosion inhibition performance,extreme pressure performance,and friction reduction performance are comparable,and superior to those of T561,a commercially available thiadiazole derivative metal deactivator.

关 键 词：噻二唑衍生物 合成工艺 废水 化学需氧量 相转移催化剂 极压性能 

分 类 号：TQ25[化学工程—有机化工]