文献类型：期刊文章

作　　者：毕庆员[1] 鲁继青[1] 邢丽琼[1] 郭明[1] 罗孟飞[1]

机构地区：[1]浙江师范大学物理化学研究所,先进催化材料省部共建教育部重点实验室,金华321004

出　　处：《Chinese Journal of Chemical Physics》

基　　金：ACKNOWLEDGMENT This work was supported by the National Natural Science Foundation of China （No.20873125）,

年　　份：2010

卷　　号：23

期　　号：1

起止页码：89-94

语　　种：中文

收录情况：AJ、CAS、CSCD、CSCD2011_2012、INSPEC、JST、RSC、SCI(收录号：WOS:000275688500014)、SCI-EXPANDED(收录号：WOS:000275688500014)、SCIE、SCOPUS、WOS、ZGKJHX、普通刊

摘　　要：A La-modified Al2O3 catalyst was prepared with deposition-precipitation method. The effect of calcination temperature on the reactivity for vapor phase hydrofluorination of acetylene to vinyl fluoride. The catalysts calcined at different temperatures were characterized using NH3-TPD, pyridine-FTIR, X-ray diffraction, and Raman techniques. It was found that the calcination process could not only change the structure of these catalysts but also modify the amount of surface acidity on the catalysts. The catalyst calcined at 400 ℃ exhibited the highest conversion of acetylene （94.6%） and highest selectivity to vinyl fluoride （83.4%） and lower coke deposition selectivity （0.72%）. The highest activity was related to the largest amount of surface acidity on the catalyst, and the coke deposition was also related to the total amount of surface acidic sites.

关 键 词：La2O3-Al2O3 catalyst  Hydrofluorination reaction  Vinyl fluoride  ACETYLENE Calcination temperature  

分 类 号：TQ222.24] O643.36]