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  • 1
    Electronic Resource
    Electronic Resource
    Modifications required on a power-compensated differential scanning calorimeter to obtain heat of adsorption measurements (1987)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 58 (1987), S. 647-653 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A commercial, power-compensated, differential scanning calorimeter (DSC) has been modified and incorporated into a gas-handling system to improve its performance and to allow its use to accurately measure heats of adsorption on supported metal catalysts. The use of gas flow controllers, needle valves, and appropriate purge gas mixtures minimized base-line perturbations due to uneven flow rates to the sample and references cavities and to changes in thermal conductivity upon introduction of the adsorbate into the purge gas. However, errors in the energy trace were still observed when large differences existed between the thermal conductivities of the adsorbate and the purge gas. These errors can be especially pronounced with processes involving the adsorption or reaction of hydrogen (if Ar is the purge gas, for example), and the severity of the problem has not previously been recognized. However, the use of a purge gas mixture with a thermal conductivity near that of the adsorbate minimized this problem, and employing a DSC block temperature near that of the adsorption temperature further decreased this error. Utilizing He as the purge gas allowed accurate values to be obtained for the enthalpy of Pd hydride formation and for heats of adsorption of H2 on Pt surfaces. The difficulties with CO adsorption were much less severe because its thermal conductivity is much more similar to that of Ar, and Qad values for CO on Pt were more easily obtained. Finally, the error in the energy trace for H2 when Ar was used was proportional to the amount of H2 adsorbed; therefore a correction factor could be obtained which alternatively allowed Ar to be used as a purge gas and provided values in good agreement with those obtained under optimum conditions using He.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1139231
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  • 2
    Electronic Resource
    Electronic Resource
    Metal-support effects on hydrogen and carbon monoxide heats of adsorption on titania-supported platinum (1985)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 89 (1985), S. 2972-2973 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100260a002
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  • 3
    Electronic Resource
    Electronic Resource
    On nitride formation on chromium (001) surface (1985)
    Springer
    Journal of materials science 4 (1985), S. 653-655 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00726952
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  • 4
    Electronic Resource
    Electronic Resource
    Studies on the SMSI of Rh/ZnO by XPS and XAES and its effect on CO−H2 reaction (1989)
    Springer
    Reaction kinetics and catalysis letters 40 (1989), S. 259-267 
    Details
    ISSN: 1588-2837
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Abstract Исследования РфЭС и РАЭС использовали для определения эффекта СВМН в катализаторе Rh/ZnO, приготовленном из Rh6(CO)16 и восстановленном при высокой температуре. Взаимодействие протекает между металлическим Rh и восстановленным катионом Zn, приводя к увеличению электронной плотности на родие. Проверяли роль эффекта СВМН в каталитическом гидрировании CO.
    Notes: Abstract XPS and XAES studies have been used to establish SMSI effect in Rh/ZnO catalyst prepared from Rh6(CO)16 and reduced at high temperature. The interaction occurs between Rh metals and reduced Zn cations resulting an increase in the electron density on rhodium. The role of SMSI effect in the catalytic hydrogenation of CO has been examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02073803
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  • 5
    Electronic Resource
    Electronic Resource
    Effect of bottlegourd seedcoating with antagonists on seedlings, quantum of the pathogen inside the seedlings and population of the soil againstFusarium oxysporum (1987)
    Springer
    Plant and soil 101 (1987), S. 205-210 
    Details
    ISSN: 1573-5036
    Keywords: Bacillus subtilis ; bottlegourd ; Fusarium oxysporum ; fusarium specific medium ; sick sterilised soil ; sick non-sterilised soil ; vial test
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract Bottlegourd seedlings raised from antagonists coated seeds did not show any wilting symptoms and remained completely healthy. The pathogen quantum inside the host tissue was found least. The pathogen propagules per gram of host tissue were restricted and the soil population of theFusarium oxysporum was reduced very much in antagonists introduced soil.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02370646
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  • 6
    Electronic Resource
    Electronic Resource
    Nitrosyl rhenium complexes: Syntheses, properties, and structures of acetylacetonato derivatives (1987)
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 548 (1987), S. 217-224 
    Details
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Nitrosyl-Rhenium-Komplexe: Darstellung, Eigenschaften und Struktur von Acetylacetonato-DerivatenEinige neue Rhenium-Komplexe, wie [Re(NO)(acac)2(Cl)H2O] und Re(NO)(acac)3(acacH)(H2O)2 wurden durch Umsatz von Re(NO)Cl3 · H2O bzw. Re(NO)(OH)3 · H2O mit Acetylaceton dargestellt. Ferner wird die Darstellung von [Re(NO)(py)(acac)2(Cl) · H2O], [Re(NO)(acac)(OH)(Cl) · H2O], [Re2(NO)2(acacH)3(acac)2 · Cl4], [Re(NO)(acac)2(OH) · H2O] · 2 H2O angegeben. Die Komplexe werden durch Elementaranalyse, spektroskopische, magnetische und Leitfähigkeitsdaten charakterisiert.
    Notes: Some new complexes of rhenium containing monocoordinating acetylacetone viz. [Re(NO)(acac)2(Cl)H2O], Re(NO)(acac)3(acacH)(H2O)2 have been synthesized by reacting acetylacetone with either Re(NO)Cl3 · H2O or Re(NO)(OH)3 · H2O. The preparation of [Re(NO)(py)(acac)2(Cl) · H2O], [Re(NO)(acac)(OH)(Cl) · H2O], [Re2(NO)2(acacH)3(acac)2 · Cl4], [Re(NO)(acac)2(OH) · H2O] · 2 H2O have also been described. These complexes were characterized through their elemental analyses, u.v., vis, i.r., 1Hn.m.r., magnetic, and conductance data.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/zaac.19875480524
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  • 7
    Electronic Resource
    Electronic Resource
    Carbon-13 NMR spectra of 1,6-bis derivatives of hexa-2,4-diynes (1988)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 26 (1988), S. 626-628 
    Details
    ISSN: 0749-1581
    Keywords: 13C NMR ; Hexa-2,4-diynes ; Sulphones Sulphoxides ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 13C NMR data for 1,6-bis derivatives of hexa-2,4-diynes are reported. Introduction of a sulphone or sulphoxide moiety at C-1, C-6 in place of sulphide, ether or amino groups caused a 6-7 ppm upfield shift (β effect) for the C-2, C-5 carbons and a 3-4 ppm downfield shift (y effect) for the C-3, C-4 carbons.
    Additional Material: 1 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260260720
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  • 8
    Electronic Resource
    Electronic Resource
    Recursion formulae for calculation of overlap integrals (1987)
    New York, NY [u.a.] : Wiley-Blackwell
    Journal of Computational Chemistry 8 (1987), S. 1-5 
    Details
    ISSN: 0192-8651
    Keywords: Computational Chemistry and Molecular Modeling ; Biochemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Computer Science
    Notes: Multi-ζ Slater-type orbitals are frequently used in molecular orbital calculations. Master formulae and numerical tables are available in literature for overlap integrals between s, p, and d atomic orbitals up to principal quantum number (n) = 3 and for some other selected quantum numbers. However, no master formula or numerical table is available for quantum numbers n = 5 and above and involving ƒ orbitals. In this article recursion formulae have been presented for the calculation of the overlap integral between any two s, p, d, and ƒ atomic orbitals formed by a linear combination of Slater-type orbitals. These formulae, when expanded, would give rise to all the master formulae reported in the literature as well as formulae hitherto unreported.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jcc.540080102
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