Catalytic Membrane Sensors

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The proposed "catalytic membrane sensor" (CMS) was developed to generate a device which would selectively identify a specific reagent in a complex mixture of gases. This was to be accomplished by modifying an existing Hz sensor with a series of thin films. Through selectively sieving the desired component from a complex mixture and identifying it by decomposing it into Hz (and other by-products), a Hz sensor could then be used to detect the presence of the select component. The proposed "sandwich-type" modifications involved the deposition of a catalyst layered between two size selective sol-gel layers on a Pd/Ni resistive Hz ... continued below

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Boyle, T.J.; Brinker, C.J.; Gardner, T.J.; Hughes, R.C. & Sault, A.G. December 1, 1998.

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  • Sandia National Laboratories
    Publisher Info: Sandia National Laboratories, Albuquerque, NM, and Livermore, CA
    Place of Publication: Albuquerque, New Mexico

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Description

The proposed "catalytic membrane sensor" (CMS) was developed to generate a device which would selectively identify a specific reagent in a complex mixture of gases. This was to be accomplished by modifying an existing Hz sensor with a series of thin films. Through selectively sieving the desired component from a complex mixture and identifying it by decomposing it into Hz (and other by-products), a Hz sensor could then be used to detect the presence of the select component. The proposed "sandwich-type" modifications involved the deposition of a catalyst layered between two size selective sol-gel layers on a Pd/Ni resistive Hz sensor. The role of the catalyst was to convert organic materials to Hz and organic by-products. The role of the membraneo was to impart both chemical specificity by molecukir sieving of the analyte and converted product streams, as well as controlling access to the underlying Pd/Ni sensor. Ultimately, an array of these CMS elements encompassing different catalysts and membranes were to be developed which would enable improved selectivity and specificity from a compiex mixture of organic gases via pattern recognition methodologies. We have successfully generated a CMS device by a series of spin-coat deposited methods; however, it was determined that the high temperature required to activate the catalyst, destroys the sensor.

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  • Other: DE00002882
  • Report No.: SAND98-2608
  • Grant Number: AC04-94AL85000
  • DOI: 10.2172/2882 | External Link
  • Office of Scientific & Technical Information Report Number: 2882
  • Archival Resource Key: ark:/67531/metadc671101

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  • December 1, 1998

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • Nov. 22, 2016, 10 p.m.

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Boyle, T.J.; Brinker, C.J.; Gardner, T.J.; Hughes, R.C. & Sault, A.G. Catalytic Membrane Sensors, report, December 1, 1998; Albuquerque, New Mexico. (https://digital.library.unt.edu/ark:/67531/metadc671101/: accessed July 18, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.