废重整催化剂中铂的分光光度法的测定  

SPECTROPHOTOMETRIC DETERMINATION OF PLATINUM IN SPENT REFORMING CATALYSTS

作　　者：郁纬军[1] 徐晓梅[1] 魏丽晖 

机构地区：[1]青岛海洋大学化学系

出　　处：《青岛海洋大学学报（自然科学版）》1997年第2期241-245,共5页Journal of Ocean University of Qingdao

摘　　要：分光光度法测定用于废氧化铝载体铂催化剂中铂含量。铂被还原成铂黑从杂质中分离出，用王水溶解形成六氯铂酸盐酸溶液，加入氯化亚锡形成橙黄色络合物溶液在４０３ｎｍ进行测定。对该方法的回收率，钼存在对测定的影响进行了研究，方法回收率９８～１０２％，在１０－６数量级。A procedure for the spectrophotometric determination of platinum in spent catalysts of platinum carried by aluminium oxide is described. The platinum is reduced to platinum black and separated from its contaminants. The platinum black is dessolved in aqua regia and forming solution of chloro-platinic acid. Stannous chloride solution is added to this solution to form an orange-yellow solution of a complex compound. The adsorbence of this solution is determined with a spectrophotometer at 430 nm. This paper studies the recovery of this procedure and the influence of the presence of molybdenum on the determination. The results show that the recovery is 98￣102% and the presence of molybdenum in ppm order does not affect the platinum determination, even if the concentration of molybdenum and that of the platinum are equal.

关 键 词：分光光度法 铂 氧化铝 催化剂载体 催化剂 

分 类 号：O614.826[理学—无机化学] TQ426.65[理学—化学]