溶胶-凝胶法制备均苯四酸二酐Sb-Nb-P-Ti-V催化剂  被引量:2

Sol-gel preparation of Sb-Nb-P-Ti-V catalysts for pyromellitic dianhydride

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作  者:王旭红[1,2] 马冠云[1,2] 汤忠俊[1] 朱慧[1,2] 赵俊峰[1] 沙雯雯[1] 

机构地区:[1]常熟理工学院化学与材料工程学院,江苏常熟215500 [2]常州大学材料科学与工程学院,江苏常州213164

出  处:《工业催化》2013年第10期31-35,共5页Industrial Catalysis

摘  要:采用溶胶-凝胶法制备活性组分为Sb-Nb-P-Ti-V的催化剂溶胶状喷涂液,将其喷涂到载体SiC上制得Sb-Nb-P-Ti-V催化剂.通过催化剂评价装置研究各组分比例、催化剂焙烧温度、焙烧时间、空速和热点温度等对均苯四酸二酐收率和纯度的影响.结果表明,在n(V):n(Ti):n(P)∶ n(Nb):n(Sb) =0.25∶ 1.25∶0.03∶ 0.01∶0.03、焙烧温度480℃、焙烧时间2h、空速(4 000 ~4 500) h-1和热点温度(430 ~440)℃条件下,均苯四酸二酐收率可达98.5%,纯度为96.04%.The catalyst spraying sol solution with the active constituent SbNbPTiV was prepared by sol gel method. SbNbPTiV catalyst for obtaining pyromellitic dianhyride was prepared by spraying the asprepared sol solution of the catalyst on SiC support. The influence of the ratio of the active constituents, catalyst calcination temperature and time, space velocity and the hot spot temperature on the yield and purity of pyromellitic dianhyride was investigated in selfmade evaluation apparatus. The results showed that the yield and the purity of pyromellitic dianhyride was 98.5% and 96.04%, respectively, under the condition as follows : n (V) : n ( Ti ) : n (P) : n ( Nb ) : n ( Sb ) = 0.25 : 1.25 : 0.03 : 0.01 : 0.03, calcination temperature 480 ℃ ,calcination time 2 h,space velocity (4 0004 500) h . and hot spot temperature (430440) ℃.

关 键 词:催化剂工程 溶胶-凝胶法 均四甲苯 均苯四酸二酐 Sb-Nb-P-Ti-V催化剂 

分 类 号:TQ426.6[化学工程] O643.36[理学—物理化学]

 

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