Kenics静态混合器强化液固相的光催化过程  

Liquid-solid photocatalytic process intensified by Kenics static mixer

作　　者：熊悝[1] 李东[1] 石康中[1] 杨祝红[1] 陆小华[1] 

机构地区：[1]南京工业大学材料化学工程国家重点实验室,江苏南京210009

出　　处：《南京工业大学学报（自然科学版）》2012年第4期43-49,共7页Journal of Nanjing Tech University(Natural Science Edition)

基　　金：国家高技术研究发展计划(863计划)资助顶目(2006AA03ZA55);国家自然科学基金资助项目(20976080);江苏省高技术研究计划资助项目(BG2007051);江苏省产学研联合创新资金资助项目(BY2009107)

摘　　要：为了提高液固相光催化反应的效率,以Kenies静态混合器强化光催化反应,考察催化剂浓度、循环速率、苯酚初始质量浓度和通气条件对苯酚降解的影响,并以对苯二甲酸为探针实验探究静态混合器的强化机制。结果表明:Kenies静态混合器能够有效地强化液固相光催化反应,反应速率提高幅度为10%～150%,强化机制可能是促进了体系中HO·的产生,使反应变为以均相反应为主,从而消除了传质限制的影响。To enhance the liquid-solid photocatalysis, the Kenics static mixer was used to intensify the photocatalytic process. The degradation of phenol in different catalyst concentrations, circulation rates, phenol initial concentrations, and bubbling gases were investigated in the intensified reactor. Results showed that phenol photo-degradation was effectively intensified, and with the Kenics static mixer, the re- action rates were improved by 10% -150%. The probable intensifying mechanism of the static mixer is en- hancing the formation of hydroxyl radical and making the photocatalytic process free of mass transfer limi- tation by shifting heterogeneous reaction to the homogeneous one.

关 键 词：光催化 强化 静态混合器 苯酚 

分 类 号：O034[理学]