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  • 1
    Electronic Resource
    Electronic Resource
    Analysis of hydrocarbons in coal and rock samples by on-line combination of thermodesorption, gas chromatography and mass spectrometry (1988)
    Springer
    Chromatographia 25 (1988), S. 279-287 
    Details
    ISSN: 1612-1112
    Keywords: Thermodesorption ; Gas chromatography-mass spectrometry ; Organic geochemistry ; Hydrocarbons in coals (C6−C33) ; Hydrocarbons in shales (C10−C34)
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary GC-MS analysis of hydrocarbons, thermally mobilized from rock and coal samples (“thermodesorption”) at 320°C, provides valuable and readily available information of organic geochemical significance. Two oil shale and three coal samples of different rank have been selected for this study. The molecular patterns of compound classes of various saturated and aromatic hydrocarbons are recorded here by employing mass chromatography of selected ions. The method described is of particular importance for the detection of those volatile constituents in coals and sedimentary rocks, which are usually not recovered during elaborate workup procedures (i.e. solvent extraction, liquid chromatography) due to evaporation losses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02324701
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  • 2
    Electronic Resource
    Electronic Resource
    Chloro-nitrosyl-molybdän-Komplexe als Epoxidationskatalysatoren. II. Epoxidringöffnungs-inaktive Katalysatoren (1983)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 325 (1983), S. 981-984 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Chloro-nitrosyl Molybdenum Complexes as Epoxidation Catalysts. II. Catalysts Inactive in Epoxide Ring-opening ReactionChloro-nitrosyl molybdenum complexes which are active in the epoxidation reaction do not catalyze the consecutive epoxide ring-opening reaction if the coordinated ligand can form a strong transition metal-ligand bond. The temperature of the cleavage of the ligand from the central atom obtained by derivatographic measurements characterizes the strength of this bond. The epoxide ring-opening activity can be demonstrated by the initial reaction rate, by the conversion of the initial epoxide and by the yield of the ring-opening products 1 and 2 obtained in the reaction of 1, 2-epoxyoctane with ethanol in chlorobenzene at 100°C. High temperatures of ligand cleavage correspond with low conversions of the initial epoxide, low initial reaction rate and a low ratio of the isomers 2/1.
    Additional Material: 2 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19833250614
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  • 3
    Electronic Resource
    Electronic Resource
    Thermal mobilization of hydrocarbons from small-size rock samples. Application in petroleum geochemistry (1982)
    Springer
    Chromatographia 16 (1982), S. 257-260 
    Details
    ISSN: 1612-1112
    Keywords: Glass capillary GC ; C1 to C15 hydrocarbons in sedimentary rocks ; Organic geochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Summary The quantitative analysis of hydrocarbons (C1 to C15 molecular range) from the water saturated pore structure of sedimentary rocks is performed by a combined thermal mobilization/glass capillary GC system. Organic geochemical processes, such as the generation of hydrocarbons as a function of kerogen type and maturity of sedimentary organic matter are studied.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02258914
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  • 4
    Electronic Resource
    Electronic Resource
    GC analysis of hydrocarbons in sedimentary rocks using a commercial thermodesorption unit as injection device (1985)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 8 (1985), S. 267-269 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography, GC ; Capillary columns ; Organic geochemistry ; Thermodesorption/cold trap injection ; Petroleum hydrocarbons in sedimentary rocks ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240080510
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  • 5
    Electronic Resource
    Electronic Resource
    Prüftechnik für Hochtemperatur-KonstruktionswerkstoffeHerrn Dr.-Ing. Walter Schütz zum 65. Geburtstag gewidmet (1994)
    Weinheim : Wiley-Blackwell
    Materialwissenschaft und Werkstofftechnik 25 (1994), S. 30-38 
    Details
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Test Techniques for High Temperature Structural MaterialsThe progress in the development of high-temperature resistant materials for practical application at temperatures between 1000°C and 2000°C requires also further development of high-temperature testing and measuring techniques for the evaluation of the necessary material data. Selected characteristic testing problems in the evaluation of mechanical properties at temperatures above 1000°C are dealt with, and technical solutions and exemplary results are presented.
    Notes: Die Entwicklung bzw. Weiterentwicklung von hochtemperaturbeständigen Werkstoffen zum Einsatz zwischen etwa 1000°C und 2000°C bedingt auch die Weiterentwicklung der Hochtemperaturprüf- und Meßtechnik zur Ermittlung der benötigten Werktoffkennwerte. Es werden ausgewählte, charakteristische prüftechnische Probleme bei der Ermittlung mechanischer Kennwerte bei Temperaturen über 1000°C angesprochen, prüftechnische Lösungen vorgestellt und Ergebnisbeispiele mitgeteilt.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mawe.19940250108
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  • 6
    Electronic Resource
    Electronic Resource
    Direct determination of the phenanthrene and methylphenanthrene isomer distribution in crude oils by multidimensional capillary GC (1985)
    Weinheim : Wiley-Blackwell
    Journal of High Resolution Chromatography 8 (1985), S. 388-390 
    Details
    ISSN: 0935-6304
    Keywords: Gas chromatography, GC ; Multidimensional capillary columns ; Geochemical maturity parameters ; Methylphenanthrene index MPI ; Calculated vitrinite reflectance ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The methylphenanthrene index (MPI) [1,2] which was recognized as suitable for the assessment of the “thermal” history of sedimentary organic matter, can be determined directly i.e. without preceding LC group separations by application of multi-dimensional GC in capillary columns. A GC double oven instrument (Siemens Sichromat 2) equipped with a “live switching” coupling piece was used for the necessary measurements.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/jhrc.1240080805
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  • 7
    Electronic Resource
    Electronic Resource
    Erkennung und Beseitigung von Kurzschlüssen an Amalgam-ZellenVortrag auf der Tagung der GDCh-Fachgruppe „Angewandte Elektrochemie“, 15. und 16. October 1970 in Frankfurt/M.-Höchst. (1971)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 43 (1971), S. 160-164 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Bei Kurzschlüssen an Amalgam-Zellen bekommen die Anoden direkten elektrischen Kontakt mit dem Quecksilber. Wenn nicht eingegriffen wird, können die betreffenden Anoden aufgrund der hohen Stromstärke zerstört und andere Zellenteile beschädigt werden. Daher wurden Verfahren entwickelt, die die Kurzschlüsse anzeigen und gegebenefalls durch Anheben aller Anoden auch beseitigen. Es werden vier Verfahren zur Kurzschlußerkennung beschrieben, die nach verschiedenen Meßprinzipien arbeiten. Sie unterscheiden sich in der Empfindlichkeit, der Ansprechgeschwindigkeit, im Grad der Automatisierung und im erforderlichen Aufwand.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330430405
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  • 8
    Electronic Resource
    Electronic Resource
    Experimentelle Untersuchungen und Digitalrechner-Simulation des instationären Betriebsverhaltens von Trenndüsen-Kaskaden für die 235U-Anreicherung (1973)
    Weinheim : Wiley-Blackwell
    Chemie Ingenieur Technik - CIT 45 (1973), S. 590-596 
    Details
    ISSN: 0009-286X
    Keywords: Chemistry ; Industrial Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Notes: Es wurden Messungen der instationären Vorgänge in einer 10-stufigen Trenndüsen-Kaskade ausgeführt und Digitalrechner-Programme entwickelt, mit denen das instationäre Betriebsverhalten mit ausreichender Genauigkeit simuliert werden kann. Übergänge zwischen beliebigen stationären Betriebszuständen (Sprungantworten) verlaufen im allgemeinen asymptotisch mit Einstellzeiten zwischen 0,5 und 10 min. Gegenüber aufgeprägten periodischen Störungen reagiert die Kaskade wie ein extrem gedämpftes System, in welchem die Störungsauswirkungen mit wachsender Erregerfrequenz und mit wachsendem Abstand vom Ort der Störungseinleitung monoton abnehmen. Aufgrund dieser Ergebnisse läßt sich das Auftreten oszillatorischer Instabilitäten ausschließen.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/cite.330450906
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  • 9
    Electronic Resource
    Electronic Resource
    Über Halogen- und Nitroderivate von Benzol- und Toluolazonaphthylamin, ihre festen Diazoniumsalze und Versuche der Überführung der letzteren in die entsprechenden Hydrazinsulfosäuren (1926)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 113 (1926), S. 268-292 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19261130122
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  • 10
    Electronic Resource
    Electronic Resource
    Zur übergangsmetallkatalysierten nucleophilen Epoxidringöffnungsreaktion (1981)
    New York, NY : Wiley-Blackwell
    Journal für Praktische Chemie/Chemiker-Zeitung 323 (1981), S. 101-120 
    Details
    ISSN: 0021-8383
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The Transition Metal Catalyzed Nucleophilic Epoxide Ring Opening ReactionThe catalytic influence of MoO2(acac)2Acac-Acetylacetonat , Mo(CO) 6 , MoCl 5 , WCl 6 and TaCl 5 on the reaction of 1,2-epoxy-octane with ethanol at 100°C in dioxan or chlorobenzene as solvents is proved. Water and hydroperoxides react with a higher rate than alcohols. When changing from primary to secondary and tertiary alcohols a decrease of the reaction rate is observed. 2,3- and 3,4-Epoxyheptane and cis- and trans-4,5-epoxy-octane react more slowly than the corresponding 1,2-epoxides. Epichlorhydrin and methylglycidether react with a lower, cyclohexene oxide, styrene oxide and norbornene oxide react with a higher rate than 1,2-epoxyoctane. The reactivities of the two dicyclopentadiene monoepoxides correspond with the reactivities of the norbornene and cyclopentene oxides. In the molybdenum catalyzed epoxide ring opening reaction an isomer distribution appears in favour of the 1-hydroxy-2-ethoxy-alkane 2 . A mechanism in the coordination sphere of the transition metal complex is proposed.
    Additional Material: 8 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/prac.19813230115
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