负载型催化剂上Mo含量的ICP-AES法测定  

Determination of Molybdenum in Supported Catalysts by ICP-AES

作　　者：方奕文[1] 董新法[1] 王文进[2] 薛亮[2] 林维明[1] 

机构地区：[1]华南理工大学化工与能源学院,广东广州510641 [2]汕头大学化学系,广东汕头515063

出　　处：《光谱学与光谱分析》2006年第8期1547-1549,共3页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金(20143004);国家青年科学基金(20203012)资助

摘　　要：用氢氟酸对负载型Mo催化剂进行预处理，并用ICP-AES法测定了Mo的含量。方法中Mo元素的检出限为8.220ng·mL^-1，加标回收率为102.6%～104.3％，11次测定的RSD（n=11）小于0．860％。方法操作方便，分析速度快，结果准确。利用该法测定不同条件下制备的负载型Mo催化剂上Mo的含量，结果表明，负载型钼催化剂在制备过程中，活性组分钼都有一定量的流失。不同浸渍液浓度和焙烧温度所制备的催化剂，其活性组分Mo的流失量各不相同。The supported Mo catalysts were pretreated using hydrofluoric acid. Then Mo was determined by inductively coupled plasma atomic emission spectrometry（ICP-AES）. In the present method, the detection limit of Mo was 8.220 ng·mL^-1 , the recovery of standard addition was 102.6%-104.3%, the relative standard deviation（n=11） was less than 0.860%. The method is efficient, accurate, and easy to operate. Molybdenum in supported catalysts, which were prepared under different conditions, was determined by this method. The results showed that the content of Mo in supported catalysts decreased after preparation. The decreases in the content of Mo were different when the active component concentrations in impregnation solution, and the calcination temperature, changed.

关 键 词：催化剂 钼 电感藕合等离子原子发射光谱 

分 类 号：O657.3[理学—分析化学]