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  • 1990-1994  (2)
  • 1960-1964
  • benzyl alcohol, formation of anthracene from  (1)
  • comparative method  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Reactions of benzyl alcohol and dibenzyl ether over zeolites (1993)
    Springer
    Catalysis letters 19 (1993), S. 281-291 
    Details
    ISSN: 1572-879X
    Keywords: Benzyl alcohol reactions on zeolites ; anthracene, from benzyl alcohol ; stilbene, from benzyl alcohol ; benzyl alcohol, formation of anthracene from ; stilbene, formation of anthracene from ; zeolites, reaction of benzyl alcohol over
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The reaction of benzyl alcohol and dibenzyl ether on several zeolites was studied in the temperature range 300–500 °C. The major products were benzaldehyde and toluene due to disproportionation, anthracene due to intermolecular alkylation followed by cyclodehydration, benzyltoluenes due to alkylation followed by hydrogenolysis, and stilbene. The alkylation course was strongly influenced by shape selectivity with the large pore zeolites mainly yielding anthracene and the medium pore zeolites benzyltoluene. The formation of stilbene was a new observation which has a bearing on the mechanism of the methanol-to-hydrocarbon reactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00767069
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    An improved comparative thermal conductivity apparatus for measurements at high temperatures (1991)
    Springer
    International journal of thermophysics 12 (1991), S. 563-576 
    Details
    ISSN: 1572-9567
    Keywords: comparative method ; inconel ; nickel ; pyrex ; pyroceram ; thermal conductivity
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An apparatus developed for the measurement of thermal conductivity of solids at temperatures from 350 to 1250 K in air, vacuum, or any other controlled atmosphere is described. It is based on the steady-state axial heat flow comparative method and can be used for measurements of conductivities in the range 1 to 100 W·m−1·K−1. New heat source layout gives uniform heat flux across the specimen column, improving the accuracy of the measurements. The specimen stack is fixed in a rigid frame. It incorporates convection current breakers, eliminating thermal insulation of the stack and thereby considerably increasing the ease of specimen mounting. The accuracy of measurements was assessed by measuring the thermal conductivity of approved reference materials and is found to be within ±3%. The results of measurements on nickel of known purity are also presented. Error analysis of the system shows that the determinate error leaving the uncertainty in the thermal conductivity of the reference materials, is less than ±2%.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00502369
    Library Location Call Number Volume/Issue/Year Availability
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    Paper (German National Licenses)
    Fulltext
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