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卤代有机化合物的光催化脱卤加氢的开题报告.docx

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卤代有机化合物的光催化脱卤加氢的开题报告 摘要： 本文主要介绍了卤代有机化合物光催化脱卤加氢反应的研究现状及进展。通过文献调研发现，采用光催化法去除卤素和加氢，是当前研究的热点之一。该方法可以高效、选择性地实现卤代有机化合物的去卤反应，同时在加氢反应中获得目标化合物，实现了控制有机化合物结构和烯烃骨架建立的可持续发展。本文从反应机理、催化剂选择、反应条件及催化剂再生和循环利用等方面对该领域的研究进行了综述，为光催化脱卤加氢反应的研究提供了思路。 关键词：光催化；卤代有机化合物；脱卤；加氢；可持续发展 Introduction Halogenatedorganiccompoundsarewidelyusedinindustry,agriculture,andmedicineduetotheiruniquechemicalandphysicalproperties(Tähtietal.,2019).Althoughtheyhaveplayedanimportantroleinmodernsociety,thereleaseofhalogenatedorganiccompoundsintotheenvironmenthasledtoseriousecologicalandhealthproblems.Therefore,thedevelopmentofefficientandselectivemethodsfortheremovalofhalogensfromorganiccompoundsisessentialforthesustainabledevelopmentofsociety. Light-catalyzeddehalogenationandhydrogenationofhalogenatedorganiccompoundshaveattractedconsiderableattentioninrecentyears.Themethodcanachievetheefficientandselectiveremovalofhalogensandthepreparationoftargetcompoundswiththecontroloftheorganiccompoundstructureandolefinskeletonestablishment. Inthisreport,weaimtoreviewtherecentprogressinlight-catalyzeddehalogenationandhydrogenationofhalogenatedorganiccompounds,includingreactionmechanisms,catalystselection,reactionconditions,andcatalystregenerationandrecycling. ReactionMechanism Thelight-catalyzeddehalogenationreactionofhalogenatedorganiccompoundsisanelectrontransferprocess.Photonsareabsorbedbythecatalysttogenerateelectron-holepairs,whichthentransferelectronstohalogenatedorganiccompounds.Thegeneratedradicalsinitiatethedecompositionofhalogenatedorganiccompounds.Thehydrogenationreactionisalsoanelectrontransferprocess.HydrogenisactivatedbythecatalysttogenerateHradicals,whichthentransferelectronstohalogenatedorganiccompoundstoreducethecarbon-halogenbond(Lietal.,2018;Wuetal.,2020). CatalystSelection Thechoiceofcatalystforlight-catalyzeddehalogenationandhydrogenationofhalogenatedorganiccompoundsiscriticaltoachievehighcatalyticactivityandselectivity.Currently,themostcommonlyusedcatalystsarebasedonmetalcomplexesandsemiconductormaterials.