SO_(4)^(2-)/M_(x)O_(y)型固体酸抗硫流失的稳定性研究进展  

Research Progress on Stability of SO_(4)^(2-)/M_(x)O_(y)Solid Acid for the Resistance to Sulfur Loss

作　　者：吴臻煜 佘洁 马娜 索娜 高尔东 李倩倩 李力成[1] WU Zhenyu;SHE Jie;MA Na;SUO Na;GAO Erdong;LI Qianqian;LI Licheng(College of Chemical Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]南京林业大学化学工程学院,江苏南京210037

出　　处：《石油学报（石油加工）》2023年第6期1453-1463,共11页Acta Petrolei Sinica(Petroleum Processing Section)

基　　金：国家自然科学基金项目(21978134,21406118);江苏省自然科学基金项目(BK20191392)资助。

摘　　要：SO_(4)^(2-)/M_(x)O_(y)型固体酸催化剂具有酸强度高、制备方法简便、成本低、无腐蚀性等优点,但其在催化反应过程中却表现出稳定性差、易失活的问题,严重地限制了其大规模应用。硫物种流失是造成SO_(4)^(2-)/M_(x)O_(y)型固体酸失活的最主要原因。硫物种与载体间的S—O—M键受到水的影响而容易发生断裂,进而使得硫物种浸出、脱落,造成固体酸的酸强度降低和酸量减少。调研了关于SO_(4)^(2-)/M_(x)O_(y)型固体酸抗硫流失的稳定性研究进展文献的基础上,针对其结构设计、表面调控和技术改进3方面进行概述,并展望了未来研究方向。SO_(4)^(2-)/M_(x)O_(y)solid acid catalyst boasts the advantages of high acid strength,simple preparation,low costs and non-corrosiveness,but shows poor stability and rapid deactivation during the catalytic reaction,thus seriously restricting its large-scale application.The loss of sulfur species is the most important reason for the deactivation of SO_(4)^(2-)/M_(x)O_(y)solid acid.Further,the S—O—M bonds between sulfate species and carriers are easily broken as affected by water,thus leading to the leach and detachment of sulfur species and the decline in acid strength and acid amount of the solid acids.The related researches on the stability of SO_(4)^(2-)/M_(x)O_(y)solid acid with the resistance to sulfur loss are investigated.The structural design,surface regulation and technological improvement are summarized.An outlook to the future research direction is provided.

关 键 词：SO_(4)^(2-)/M_(x)O_(y) 固体酸 稳定性 失活 流失 硫物种 

分 类 号：TQ032.4[化学工程]