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XRF ANALYSIS OF AUTOMOTIVE CATALYSTS BY FLUX/FUSION

机译:助熔剂/熔剂的XRF分析

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摘要

The classic approach to preparation of XRF specimens of inhomogeneous materials is the method of flux/fusion. This technique has not been applied to automotive catalysts because they utilize large quantities of precious metals (Pt, Pd, Rh) that are reduced at typical fusion temperatures and agglomerate and alloy with the crucible walls, leading to erratic losses of the precious metals. This effect is pronounced in automated fusion machines that vigorously agitate the crucible over a gas flame. In this report I describe a fusion technique that overcomes the problem of precious metal alloying and that yields good results for the broad range of elements found in modern automotive catalysts.
机译:不均匀材料XRF样品制备的经典方法是助熔剂/融合剂。该技术尚未应用于汽车催化剂,因为它们利用了大量的贵金属(Pt,Pd,Rh),这些贵金属在典型的熔融温度下会还原,并且与坩埚壁发生团聚和形成合金,导致贵金属的流失不定。在自动熔合机中,这种作用在气体火焰上剧烈搅拌坩埚时很明显。在本报告中,我描述了一种融合技术,该技术克服了贵金属合金化的问题,并且对于现代汽车催化剂中发现的多种元素均能产生良好的效果。

著录项

  • 来源
  • 会议地点 Steamboat Springs CO(US);Steamboat Springs CO(US);Steamboat Springs CO(US)
  • 作者

    A. R. Drews;

  • 作者单位

    Physical and Environmental Sciences Department, Ford Research Laboratories 2101 Village Road, Dearborn MI 48121;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 X射线、紫外线、红外线;
  • 关键词

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