Effect of Extra-Framework Titanium in TS-1 on the Ammoximation of Cyclohexanone  

作　　者：Yaquan Wang Shuhai Wang Teng Zhang Jiaxin Ye Xiao Wang Dali Wang 

机构地区：[1]Key Laboratory for Green Chemical Technology of the Ministry of Education,School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China [2]Tianjin Synthetic Fiber Company,Tianjin 300271,China

出　　处：《Transactions of Tianjin University》2017年第3期230-236,共7页天津大学学报（英文版）

基　　金：was supported by the National Basic Research Program of China(‘‘973’’Program,No.G2000048005);the National Natural Science Foundation of China(No.21276183)

摘　　要：Titanium silicalite (TS-1) without and with extra-framework titanium have been prepared and TiO2is also prepared under the same conditions. All the samples are characterized with XRD, FT-IR, and UV–Vis. The effects of extra-framework titanium in TS-1 on the ammoximation of cyclohexanone have been studied in a continuous slurry reactor. The characterization results reveal that the extra-framework titanium exists as anatase. The catalytic evaluation results show that the anatase has a positive effect on the ammoximation of cyclohexanone by extending the catalytic life because it also exhibits some activity, while the conversion of cyclohexanone and the selectivity to cyclohexanone oxime are not influenced. The anatase TiO2does not catalyze H2O2decomposition appreciably compared with TS-1 without extra-framework titanium. The results are very useful in guiding the TS-1 production. © 2017, Tianjin University and Springer-Verlag Berlin Heidelberg.Titanium silicalite (TS-1) without and with extra-framework titanium have been prepared and TiO_2 is also prepared under the same conditions.All the samples are characterized with XRD,FT-IR,and UV–Vis.The effects of extra-framework titanium in TS-1 on the ammoximation of cyclohexanone have been studied in a continuous slurry reactor.The characterization results reveal that the extra-framework titanium exists as anatase.The catalytic evaluation results show that the anatase has a positive effect on the ammoximation of cyclohexanone by extending the catalytic life because it also exhibits some activity,while the conversion of cyclohexanone and the selectivity to cyclohexanone oxime are not influenced.The anatase TiO_2 does not catalyze H_2O_2 decomposition appreciably compared with TS-1 without extra-framework titanium.The results are very useful in guiding the TS-1 production.

关 键 词：Network function virtualization Titanium dioxide 

分 类 号：TQ426[化学工程]