NH_3-TPD表征结果影响因素的分析  

Analysis of Effect Factors of NH_3-TPD Characterization Results

作　　者：吴伟[1] 郑文涛[1] 刘文勇[1] 

机构地区：[1]黑龙江大学化学化工学院,黑龙江哈尔滨150080

出　　处：《化学与粘合》2004年第1期17-19,共3页Chemistry and Adhesion

基　　金：黑龙江省科技厅攻关项目 (合同编号GC0 2A3 0 9)

摘　　要：NH3-TPD(Temperature-ProgrammedDesorption)技术是表征固体酸催化剂表面酸性质的有效手段。考察了催化剂粒度、程序升温速率、载体流速以及催化剂装填量等实验操作条件对ReY型沸石催化剂NH3-TPD表征结果的影响。实验结果显示:当催化剂粒度为40～60mesh、程序升温速率为15℃ min、载气流速为60ml min、催化剂填量为0 10g时,适宜进行NH3-TPD实验。NH_3-TPD(Temperature-Programmed Desorption)technique is the effective means used for the characterization of surface acidity of solid acidic catalysts.The effect of experiment condition such as catalyst particle,temperature-programmed rate,flow rate of carrier gas and filled amount of catalysts on the NH_3-TPD characterization results of ReY zeolite are investigated.The results show that the conditions of 40～60 mesh of catalyst particle,15 ℃/min of temperature-programmed rate,60 ml/min of flow rate of carrier gas and 0.10 g of filled amount of catalysts are suitable for the NH_3-TPD experiment.

关 键 词：NH3-TPD 表征 影响因素 固体酶催化剂 程序升温脱附技术 表面酸性 

分 类 号：O643.36[理学—物理化学]