Study of Pt-Re/alumina reforming catalysts by neutron activation analysis

Abstract

The elemental analysis of Pt-Re/alumina catalysts was carried out by nondestructive and bulk neutron activation analysis. Samples were irradiated with a 241Am-Be source-based as well as accelerator-based thermal neutrons and induced activities were measured by a HPGe detector with a PCbased data acquisition and analysis system. An appropriate calibration technique was established for the determination of the respective ratios of each element present in the catalysts. The technique proved to be useful for the determination of low concentrations of Pt and Re in the catalyst samples.

Evaluation of uncertainty in the energy dispersive X-ray fluorescence determination of platinum in alumina

“…Considering these practical difficulties, a purely instrumental method, which does not require sample dissolution, is desirable for the determination of Pt in the refractory alumina matrix. X-ray uorescence (XRF) 8,13,14 and neutron activation analysis (NAA) 10,15 have been established as very efficient and versatile analytical techniques for the direct analysis of solids. Determination of Pt in catalysts by the NAA technique has been reported from our laboratory.…”

Application of Silica Chemically Modified by Sulfur-Containing Groups to the Separation and Determination of Platinum and Rhenium in Catalysts Based on Aluminum Oxide

“…The composition of the catalysts affects their catalytic activity, which necessitates the control of the concentration of platinum and rhenium in them. To determine platinum and rhenium in aluminum oxide-based catalysts, inductively coupled plasma atomic emission spectrometry [2][3][4], atomic absorption spectrometry [4], X-ray fluorescence analysis [5], neutron activation analysis [6], and coulometry [7] are used.…”