催化裂化催化剂中镍钒锑的测定  

Determination of Ni、V、Sb on FCC catalysts

作　　者：严方[1] 谢永杰 

机构地区：[1]中国石油大学化学化工学院,山东青岛266555 [2]山东石大科技集团有限责任公司,山东东营257061

出　　处：《中国测试》2010年第1期46-48,共3页China Measurement & Test

摘　　要：针对催化剂中的重金属污染问题,采用X射线荧光光谱法测定催化裂化催化剂中重金属Ni、V、Sb的含量,分析了影响Ni、V、Sb元素测定的各种因素,以未使用过的催化剂为载体配制标准样品,使标准样品与样品的基体基本一致,减少了基体效应的影响。待测元素的线性范围分别:Ni为0.10%～1.20%,V为0.05%～0.30%,Sb为0.02%～0.20%,相关系数均为0.9999,测定结果的相对标准偏差小于2%。该方法的测定结果与原子吸收法的测定结果相吻合。In catalysts, heavy metal pollution is a serious problem. The XRF method was introduced in this paper for determining Ni, V, Sb in FCC catalysts. By the establishment of analytical method, the cause and effect of content determination has been discussed. The matrix effect can be overcome by using calibration standards with fresh catalyst as matrix. Linearity window is 0.10%-1.20% for Ni, 0.05%--0.30% for V, 0.02%-0.20% for Sb, the correlative coefficients are larger than 0.999 9 for three metals, and measurement RSDs are less than 2%. Results show that the method is fast, accurate and convenient. The results are generally consistent with those from AAS.

关 键 词：化学分析 X射线荧光光谱法 催化剂 镍 钒 锑 

分 类 号：TH744.16[机械工程—光学工程] TG146.15[机械工程—仪器科学与技术]