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In Situ High-Temperature Study Of Silver Behenate Reduction To Silver Metal Using Synchrotron Radiation

机译:同步辐射将山hen酸银还原为金属银的原位高温研究

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摘要

Silver behenate is utilized in commercially available photothermographic imaging elements. The silver metal (Ag°) image formation in these imaging elements is based on the heat-induced reduction of the silver behenate. The completed reduction process has historically been studied by conventional X-ray diffraction techniques. To enhance the understanding of the kinetics of silver metal formation, equipment and methods were developed allowing for in situ high-temperature monitoring of the AgBehenate → Ag° reduction process. To perform the necessary measurements a high-temperature sample stage and position sensitive detector were mounted on the X3B1 beam line powder diffractometer at the National Synchrotron Light Source, Brookhaven National Laboratories. The fraction of AgBehenate reduced and Ag° developed was obtained from the synchrotron data and it was determined that the reaction rates for both processes followed a second order transformation. The activation energy was derived from the reaction rate data and was found to be 216 kJ/mol for AgBehenate reduction and 156 kJ/mol for Ag° development.
机译:山hen酸银用于市售的光热成像成像元件中。这些成像元件中的银金属(Ag°)图像形成是基于山be酸银的热诱导还原。历史上已经通过常规的X射线衍射技术研究了完成的还原过程。为了增强对银金属形成动力学的理解,开发了设备和方法,可对AgBehenate→Ag°还原过程进行现场高温监测。为了进行必要的测量,将高温样品台和位置敏感检测器安装在Brookhaven国家实验室的National Synchrotron光源的X3B1光束线粉末衍射仪上。从同步加速器数据获得AgBehenate还原的部分和Ag°展开的部分,并且确定两个过程的反应速率均遵循二阶转化。活化能是从反应速率数据中得出的,发现还原AgBehenate的活化能为216 kJ / mol,展开Ag°的活化能为156 kJ / mol。

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

    Eastman Kodak Company, Rochester, New York 14650-2106 thomas.blanton@kodak.com;

    rn Eastman Kodak Company, Rochester, New York 14650-2106;

    rnAlfred University, New York State College of Ceramics, Alfred, New York 14802;

    xrnAlfred University, New York State College of Ceramics, Alfred, New York 14802;

  • 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

  • 入库时间 2022-08-26 14:25:09

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