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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Journal of Solid State Chemistry 57 (1985), S. 260-266 
    ISSN: 0022-4596
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 125 (1994), S. 1067-1074 
    ISSN: 1434-4475
    Keywords: Zinc cobalt selenate ; Activity coefficients ; Free energy of mixed crystal formation ; Isopiestic method
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Löslichkeitsisotherme des Systems ZnSeO4-CoSeO4-H2O wurde bei 25°C untersucht. Es wird festgestellt, daß das monokline CoSeO4·6H2O unstabil ist und in tetragonale Mischkristalle übergeht. Mittels der isopiestischen Methode wurden die Aktivitätskoeffizienten der Komponenten in den gesättigten Dreistofflösungen und Mischkristallen bestimmt. ΔG F der Mischkristallbildung weist eine negative Abweichung vom idealen Zustand auf.
    Notes: Summary The solubility in the ZnSeO4-CoSeO4-H2O system has been studied at 25°C. It has been established that the CoSeO4·6H2O monoclinic crystal structure is unstable and undergoes a change into a tetragonal structure due to the included zinc ions. Activity coefficients of the salt components in the saturated solutions and in the mixed crystal hexahydrates have been determined by the isopiestic method. ΔG F of (ZnxCo1−x)SeO4·6H2O mixed crystals shows a negative deviation from ideality.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Monatshefte für Chemie 126 (1995), S. 535-541 
    ISSN: 1434-4475
    Keywords: Magnesium nickel selenate ; Activity coefficients ; Gibbs energy of mixing ; Isopiestic method ; Pitzer model
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die Aktivitätskoeffizienten der Salzkomponenten sowohl der gesättigten Lösungen als auch der Mischkristalle (Zusammensetzung: (MgxNi1−x)SeO4·6H2O) des Systems MgSeO4-NiSeO4-H2O wurden bei 25°C mit Hilfe der isopiestischen Methode bestimmt. Es konnte gezeigt werden, daß die gebildeten Mischkristalle nur leicht vom idealen Zustand abweichen und mit einem regulären Modell gut beschrieben werden können. Zur Berechnung der thermodynamischen Eigenschaften der Salzkomponenten des ternären Systems wurde dasPitzersche lonenwechselwirkungsmodell herangezogen. Die berechneten Werte stimmen mit den mittels der isopiestischen Methode gewonnenen experimentellen Ergebnissen gut überein.
    Notes: Summary Activity coefficients of the salt components in both the saturated solutions and the (MgxNi1−x)SeO4·6H2O mixed crystals of the MgSeO4-NiSeO4-H2O system at 25°C have been determined by the isopiestic method. It has been established that the formed mixed crystals deviate only slightly from ideality and can be adequately described by a regular model. ThePitzer ion-interaction model has been used to calculate the thermodynamic properties of the salt components in the ternary system. The calculated data are in good agreement with those obtained experimentally by the isopiestic method.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Thermochimica Acta 92 (1985), S. 719-721 
    ISSN: 0040-6031
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    Journal of thermal analysis and calorimetry 7 (1975), S. 561-570 
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Résumé On a étudié par TG les acétates suivants: Mg(OCOCH3)2 · 4H2O, Ca(OCOCH3)2·.H2O, Mn(OCOCH3)2 · 4H2O, Co(OCOCH3)2 · 4H2O, Ni(OCOCH3)2 · 4H2O, 2Cu(OCOCH3)2 ·.2H2O, Zn(OCOCH3)2 · 2H2O et Cd(OCOCH3)2 · 2H2O. Ceux-ci perdent leur eau de cristallisation jusqu'à 220° et donnent les sels anhydres correspondants. Les acétates tétra et bihydratés se déshydratent plus facilement que les acétates monohydratés. Les sels anhydres commencent à se décomposer à 250° environ. On obtient les oxydes des métaux respectifs entre 350 et 400°.
    Abstract: Zusammenfassung Die Acetate Mg(OCOCH3)2 · 4H2O, Ca(OCOCH3)2 · H2O, Mn(OCOCH3)2 · 4H2O, Co(OCOCH3)2 · 4H2O, Ni(OCOCH3)2 · 4H2O, 2Cu(OCOCH3)2·.2H2O, Zn(OCOCH3)2 · 2H2O und Cd(OCOCH3)2 · 2H2O wurden thermogravimetrisch untersucht. Es wurde festgestellt, daß die Kristallhydrate bis 220° ihr Kristallwasser verlieren und in wasserfreie Salze übergehen. Die Tetra- und Dihydrate wurden relativ leichter dehydratiert als die Monohydrate. Die wasserfreien Salze beginnen bei etwa 250° zu zerfallen. Im Temperaturintervall von 350–400° entstehen die entsprechenden Metalloxide.
    Notes: Abstract The following salts are studied gravimetrically: Mg(OCOCH3)2 · 4H2O, Ca(OCOCH3)2 · H2O, Mn(OCOCH3)2 · 4H2O, Co(OCOCH3)2 · 4H2O, Ni(OCOCH3)2 · 4H2O, 2Cu(OCOCH3)2 · 2H2O, Zn(OCOCH3)2 · 2H2O, Cd(OCOCH3)2 · 2H2O. It is found that up to 220° these crystal hydrates lose their crystallisation water and form anhydrous salts. The tetrahydrates and dihydrates lose the crystallisation water more easily than the monohydrates. The anhydrous salts start to decompose at ca. 250°. The corresponding metal oxides are obtained in the temperature interval 350–400°.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 65 (1998), S. 265-270 
    ISSN: 1588-2837
    Keywords: Alumina supported manganese oxide ; manganese formate ; FTIR spectroscopy ; NH3 and NO adsorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Adsorption and coadsorption of NH3 and NO on alumina-supported manganese oxide catalyst prepared from manganese formate precursor has been studied by means of FTIR spectroscopy.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Reaction kinetics and catalysis letters 68 (1999), S. 331-337 
    ISSN: 1588-2837
    Keywords: Copper-on-alumina catalysts ; copper formate ; FTIR spectroscopy ; NH3 and NO adsorption
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract Adsorption and coadsorption of NH3 and NO on copper-on-alumina catalysts prepared from formate precursors by calcination at 670 and 870 K was studied by means of FTIR spectroscopy. It has been established that the sample prepared at lower temperature exhibits a higher activity with respect to NO reduction with ammonia.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 409 (1974), S. 345-352 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: On the Existance of Mn (OCOCH3)2 · 2H2OThe existence of manganous acetate dihydrate is predicted and the conditions for its equilibrium existence are proved.The polyterms of solubility of the systems Mn(OCOCH3)2-H2O and Mn(OCOCH3)2- CH3COOH-H2O are studied at 40 and 60°C. The fields of equilibrium existence are determined for the acid manganous acetates of the composition 2 Mn(OCOCH3)2 · CH3COOH · 6H2O and Mn(OCOCH3)2 · CH3COOH · 1.5 H2O at 40°C as well as the fields of the acid salt of the composition Mn((OCOCH3)2 · CH3COOH · H2O a t 60°C. The crystallisation fields of Mn(OCOCH3)2 · 2H2O and Mn(OCOCH3)2 are determined a t 60°C. The results obtained are confirmed by X-ray investigation. The compositions of the solid phases are also determined from thermogravimetric studies.
    Notes: Die Existenz von Mn(OCOCH3)2 · 2 H2O wird vorausgesagt und die Bedingungen für seine Existenz im Gleichgewicht werden bestimmt.Untersucht werden die Löslichkeitsisothermen des Zweistoffsystems Mn(OCOCH3)2-H2O und des Dreistoffsystems Mn(OCOCH3)2-CH3COOH-H2O bei 40 und 60°C. Dabei werden Kristallisationsfelder saurer Acetate folgender Zusammensetzung festgestellt : 2 Mn(OCOCH3)2 · CH3COOH · 6H2O und Mn(OCOCH3)2 · CH3COOH · 1,5 H2O bei 40°C, sowie Mn(OCOCH3)2 · CH3COOH · H2O bei 60°C; bei 60°C ferner Kristallisationsfelder von Mn(OCOCH3)2 · 2H2O und Mn(OCOCH3)2. Diese Ergebnisse wurden auch röntgenographisch und thermogravimetrisch bestätigt.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 463 (1980), S. 227-235 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigation of Cocrystallization in the Systems Mn(OOCCH3)2-Co(OOCCH3)2-H2O, Mn(OOCCH3)2-Ni(OOCCH3)2-H2O, Mn(OOCCH3)2-Zn(OOCCH3)2-H2O at 60°CThe three-component systems Mn(OOCCH3)2-Co(OOCCH3)2-H2O, Mn(OOCCH3)2-Ni(OOCCH3)2-H2O and Mn(OOCCH3)2-Zn(OOCCH3)2-H2O at 60°C were investigated by physio-chemical analysis. There is an interruption in the series of mixed crystals formed in the three-component systems. The inclusion of Co2+- and Ni2+ in Mn(OOCCH3)2 · 2 H2O of Mn2+ in Co(OOCCH3)2 · 2 H2O, Zn(OOCCH3)2 · 2 H2O and Ni(OOCCH3)2 · 4 H2O is based on isodimorphic substitution. It was found that in the system Mn(OOCCH3)2-Zn(OOCCH3)2-H2O crystallizes Zn(OOCCH3)2 · Mn(OOCCH3)2 · 2 H2O. It was identified by the X-ray and differential thermal analysis.
    Notes: Nach der Methode der physikochemischen Analyse sind die Systeme Mn(OOCCH3)2-Co(OOCCH3)2-H2O, Mn(OOCCH3)2-Ni(OOCCH3)2-H2O und Mn(OOCCH3)2-Zn(OOCCH3)2-H2O bei 60°C untersucht worden. In allen drei Systemen ist die Bildung von Mischkristallen festgestellt. Der Einbau von Co2+- und Ni2+-Ionen in Mn(OOCCH3)2 · 2 H2O und von Mn2+-Ionen in Co(OOCCH3)2 · 2 H2O, Zn(OOCCH3)2 · 2 H2O und Ni(OOCCH3)2 · 4 H2O findet durch isodimorphe Substitution der entsprechenden Metallionen statt. Im System Mn(OOCCH3)2-Zn(OOCCH3)2-H2O bildet sich das Doppelsalz Zn(OOCCH3)2 · Mn(OOCCH3)2 · 2 H2O; es ist durch röntgenographische und DTA-Untersuchungen charakterisiert worden.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 410 (1974), S. 75-87 
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Investigation of Some Three-Component Systems of the Type Me(OCOCH3)2 — CH3COOH — H2O at 25°C (Me = Ni, Co, Mg, Mn, Ca)By physicochemical analysis the following three-component systems were studied at 25°C: metal(II)acetate-acetic acid-water (metal = Ni, Co, Mg, Mn, Ca). The crystallization fields of the following crystal hydrates were determined: Ni(OCOCH3)2 · 4H2O; Co(OCOCH3)2 · 4H2O; Co(OCOCH3)2 · 2H2O; Mg(OCOCH3)2 · 4H2O; Mn(OCOCH3)2 · 4H2O; Ca(OCOCH3)2 · 2H2O and Ca OCOCH3)2 · H2O, as well as the crystallization fields of the acids salts of the composition: 3Mg(OCOCH3)2 · 4CH3COOH · 5H2O; 2Mn(OCOCH3)2 · CH3COOH · 4H2O; Mn(OCOCH3)2 · CH3COOH · 1.5H2O and Ca(OCOCH3)2 · CH3COOH · H2O. The solid phases, prepared from the studied systems, were identified by the X-ray and differential thermal analysis.
    Notes: Durch physikochemische Analyse werden Dreistoffsysteme Metallacetat--Essigsäure-Wasser (Metall = Ni, Co, Mg, Mn, Ca) bei 25°C untersucht. Es werden die Kristallisationsfelder folgender Kristallhydrate festgestellt: Ni(OCOCH3)2 · 4H2O; Co(OCOCH3)2 · 4H2O; Co(OCOCH3)2 · 2H2O; Mg(OCOCH3)2 · 4H2O; Mn(OCOCH3)2 · 4H2O; Ca(OCOCH3)2 · 2H2O und Ca(OCOCH3)2 · H2O, sowie die Kristallisationsfelder folgender saurer Salze: 3 Mg(OCOCH3)2 · 3CH3COOH · 5H2O; 2Mn(OCOCH3)2 · CH3COOH · 4H2O; Mn(OCOCH3)2 · CH3COOH · 1,5 H2O; Ca(OCOCH3)2 · CH3COOH · H2O. Die aus den untersuchten Systemen gewonnenen festen Phasen wurden auch röntgenographisch und thermogravimetrisch identifiziert.
    Additional Material: 10 Ill.
    Type of Medium: Electronic Resource
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