DETERMINATION OF THE PLATINUM, RHENIUM AND CHLORINE CONTENTS OF ALUMINA-BASED CATALYSTS BY X-RAY-FLUORESCENCE SPECTROMETRY

被引：5

作者：

PEDDY, RVC ^{[1
]}

KALPANA, G ^{[1
]}

KOSHY, VJ ^{[1
]}

APPARAO, NVR ^{[1
]}

JAIN, MC ^{[1
]}

PATEL, RV ^{[1
]}

机构：

[1] INDIAN OIL CORP,RES CTR,FARIDABAD,INDIA

来源：

ANALYST | 1991年 / 116卷 / 08期

关键词：

D O I：

10.1039/an9911600847

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An X-ray fluorescence (XRF) method is described for the determination of the platinum, rhenium and chlorine contents of gamma-alumina supported catalysts. Calibration graphs were linear in the range 0.02-0.80, 0.20-1.10 and 0.1-1.0% m/m for platinum, rhenium and chlorine, respectively. In order to determine the accuracy of the proposed method, the results obtained were compared with those given by ultraviolet-visible (UV/VIS) spectrophotometry, inductively coupled plasma atomic emission spectrometry (ICP-AES), electrothermal atomic absorption spectrometry (ETAAS) and energy dispersive X-ray analysis (ED-SEM). Statistical analysis showed no significant errors at the 95% confidence interval for the chlorine content obtained by XRF, UV/VIS spectrophotometry and ED-SEM. The determination of platinum in monometallic catalysts was carried out by XRF and the results obtained were compared with those given by ICP-AES, ETAAS and UV/VIS spectrophotometry. Similarly, for bimetallic catalysts, the results obtained using XRF and UV/VIS spectrophotometry for the determination of platinum and rhenium were compared. Statistical evaluation showed that there was no significant bias between the analytical methods used.

引用

页码：847 / 850

页数：4

共 21 条

[1] SPECTROPHOTOMETRIC STUDY OF THE PLATINUM(IV)-TIN(II) CHLORIDE SYSTEM [J].