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  • 1995-1999  (2)
  • Mn2O3/γ-Al2O3 catalyst  (1)
  • Traceability chain  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Accreditation and quality assurance 1 (1996), S. 181-185 
    ISSN: 1432-0517
    Keywords: Key words  Comparability ; Uncertainty ; Traceability chain ; Primary method ; Reference material
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract  Traceability is an essential property of a measurement result. However, it is recognized that the results of chemical measurements can be lacking in this property. In this paper we try to show how to understand and establish traceability in chemical measurement. The traceability connotation and the necessity of tracing back to SI units are described by means of comparability well-known. The roles and interrelationships of quality assurance, accreditation, calibration, reference material, analytical method, comparison and uncertainty in establishing traceability are explained with the aid of a block diagram. The paper also includes diagrams illustrating the Chinese situation and experience of establishing traceability for chemical measurement in China.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 58 (1999), S. 309-315 
    ISSN: 1572-8943
    Keywords: dispersion threshold value ; Mn2O3/γ-Al2O3 catalyst ; TG
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Mn2O3/γ-Al2O3 catalysts were prepared by the impregnation method, and the maximum monolayer dispersion capacity or dispersion threshold value of Mn2O3 on the surface of γ-Al2O3 was determined to be 13.08% from the decomposition mass loss of supported Mn(NO3)2 in the monolayer state. This was compared with the values estimated from a close-packed monolayer model and an interaction model. It was confirmed that the high activities and selectivities of the catalysts for benzoic acid hydrogenation to benzaldehyde are due to the monolayer dispersion of the Mn2O3 on the surface of γ-Al2O3.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
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