固体核磁共振在氟化铝催化剂研究中的应用进展  

Progress on the application of solid state nuclear magneticresonance in aluminum fluoride catalysts

作　　者：曾姝 赵嘉静 毛伟[1] 吕剑[1] Zeng Shu;Zhao Jiajing;Mao Wei;LüJian(Xi’an Modern Chemistry Research Institute,Xi’an 710021,Shaanxi,China)

机构地区：[1]西安近代化学研究所,陕西西安710065

出　　处：《工业催化》2024年第4期1-10,共10页Industrial Catalysis

基　　金：国家自然科学基金(22302156)。

摘　　要：氢氟烯烃(HFOs)作为重要的精细化工中间体,其制备关系着我国在应对全球气候变暖、优化能源结构方面的重大战略需求。高比表面积的AlF_(3)因其环境友好、耐HF特性和丰富的酸性中心成为绿色合成HFOs路径的核心催化剂,然而追求高比表面积的同时也为其物理化学特性的研究带来挑战。固体核磁共振(ssNMR)是鉴定材料组成结构、阐释材料合成机理、辨别酸性特征的强有力工具。通过总结近年来利用多种先进的多维多核固体核磁技术如^(27)Al、^(19)F、^(1)H、^(13)C等在高比表面积AlF_(3)的组成结构、合成机理以及酸性位点识别和定量上的杰出工作,系统剖析AlF_(3)催化剂的理化性能,这将为优异性能AlF_(3)的合成提供一定的理论指导。As an important fine chemical intermediate,the preparation of hydrofluoroolefins(HFOs)is really related to the response of global warming and optimizing energy structure.Aluminum fluorides with high specific surface area are core catalysts for HFOs production owing to their advantages of environmentally friendly,hydrogen fluoride tolerance and rich acid sites.However,the pursuit of high specific surface area also brings challenges to the study of its physicochemical properties.Solid state nuclear magnetic resonance(ssNMR)is a powerful tool to elucidate the structure,interpret the synthesis mechanism and identify acid sites of the aluminum fluorides.In this review,the major progresses in structure identification,synthesis mechanism elucidation and acid sites recognition and quantification of aluminum fluorides with high specific surface area utilizing advanced multi-dimensional and-nuclear ssNMR,including^(27)Al,^(19)F,^(1)H and^(13)C,were summarize.The physicochemical properties of aluminum fluoride catalysts were systematically analyzed.These will provide theoretical guidance for the optimization of aluminum fluoride catalysts with excellent properties.

关 键 词：催化剂工程 氢氟烯烃合成 氟化铝催化剂 固体核磁共振 组成结构 合成机理 酸性 

分 类 号：O643.36[理学—物理化学] TQ426.1[理学—化学]