R134a光热协同降解催化材料筛选研究  

Catalysts Selection Study on Photothermal Degradation of R134a

作　　者：王天浩 谢大通 史琳[1] 戴晓业[1] WANG Tianhao;XIE Datong;SHI Lin;DAI Xiaoye(Key Laboratory for Thermal Science and Power Engineering of Ministry of Education,Tsinghua University,Beijing 100084,China)

机构地区：[1]清华大学热科学与动力工程教育部重点实验室,北京100084

出　　处：《工程热物理学报》2025年第3期693-702,共10页Journal of Engineering Thermophysics

基　　金：国家自然科学基金(No.52236003,No.52176011);清华大学–山西清洁能源研究院创新种子基金。

摘　　要：部分HFCs制冷剂具有较高的温室效应值,根据国际环保公约要求,即将迎来大规模的淘汰和销毁工作,因此需要构建低能耗、高效率的降解处理方案。本文基于已有的光热协同分解的技术路线,对比分析了多种催化材料在R134a光热协同分解中的性能差异,通过催化剂表征深入分析得到了包括形貌、能带结构、光电性能等材料性能对反应速率的影响规律。基于对这一规律的认识,选择锐钛矿TiO_(2)作为基材进行了改性,改性后的催化剂在30 min内能实现98%以上的降解率,反应速率较改性前提高了3.8倍。In accordance with international environmental protection conventions,some high GWP HFCs refrigerants are facing obsolescence and destruction.Therefore,it is necessary to develop energy-saving,high-efficiency destruction way.In this paper,the performance differences of various catalysts in the photothermal catalytic degradation of R134a was compared based on existing tech-nical route.Furthermore,the effects of material properties on the reaction rate,such as morphology,band structure and photoelectric properties,were obtained through characterization of catalysts.Based on the law of the effects,anatase TiO_(2) was selected for modification.The modified catalyst achieved a degradation rate of over 98%within 30 minutes,with the reaction rate increasing by 3.8 times.

关 键 词：HFCs降解 制冷剂 光热协同催化 材料表征 催化剂改性 

分 类 号：TK123[动力工程及工程热物理—工程热物理]