Preparation of Highly Dispersed Copper Particles in Zeolite  [in Japanese]

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Abstract

Temperature programmed reduction and desorption techniques have been used to investigate the reduction process of CuY. The reduction of Cu^2+ ions in zeolite with H_2 occurs via a two-step mechanism in which Cu^+ is first formed and then reduced to metal. In the first step of reduction NH_3 was used as the reducing agent instead of H_2. Cu particles in the reduced CuY with NH_3 pretreatment were uniformly dispersed compared with those of CuY without one. The average particle size of Cu metal was estimated to be 8.4 nm for the former and 18.5 nm for the latter. The detailed mechanism of reduction process of CuY has been discussed by the physico-chemical measurements, such as mass spectrometry, transmission electron microscope, infrared spectroscopy and electron spin resonance.

Journal

  • Bulletin of the Faculty of Liberal Arts,Nagasaki University. Natural science

    Bulletin of the Faculty of Liberal Arts,Nagasaki University. Natural science 27(1), p1-13, 1986-07

    〔長崎大学教養部〕

Codes

  • NII Article ID (NAID)
    120000916568
  • NII NACSIS-CAT ID (NCID)
    AN10352293
  • Text Lang
    JPN
  • Article Type
    departmental bulletin paper
  • Journal Type
    大学紀要
  • ISSN
    02871319
  • NDL Article ID
    3094507
  • NDL Source Classification
    PA42(無機化学・無機化学工業--金属元素・金属化合物)
  • NDL Source Classification
    ZM2(科学技術--科学技術一般--大学・研究所・学会紀要)
  • NDL Call No.
    Z14-159
  • Data Source
    NDL  IR 
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