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  • 1
    Electronic Resource
    Electronic Resource
    Thermal decomposition of Cu(II) adipate (1978)
    Springer
    Journal of thermal analysis and calorimetry 13 (1978), S. 363-368 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The kinetics of isothermal decomposition of Cu(CH2CH2COO)2 were studied at 483–503 K. The end-product was identified as CuO by X-ray diffraction and chemical analysis. The kinetics follow the Prout-Tompkins equation with an activation energy of 191 ± 10 kJ/moIe. The activation energies and the order of reaction were also evaluated from analysis of the DTG, DTA and TG curves of the sample.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01912309
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  • 2
    Electronic Resource
    Electronic Resource
    Kinetics of isothermal decomposition of Cu(II) succinate (1979)
    Springer
    Journal of thermal analysis and calorimetry 17 (1979), S. 543-548 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The isothermal decomposition of Cu(CH2COO)2 has been studied at 473–523 K using material in the form of powder and pellets. The isothermal decomposition of Cu(II) succinate to cupric oxide takes placevia the intermediate formation of 2 CuCO3·Cu(OH)2. The X-ray diffraction technique has been employed to identify the decomposition products. The decomposition curves are best fitted by two kinetic stages: (i) a linear law, and (ii) a unimolecular law. The activation energies for the two stages are 153 ± 10 kJ/mole, and 115 ± 8 kJ/mole, respectively. It has been observed that pelleting has no effect on the kinetics. DTG, DTA and TG curves of the sample have also been recorded. The order of reaction has been calculated from these curves.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01914044
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  • 3
    Electronic Resource
    Electronic Resource
    Mössbauer effect studies on thermal decomposition of iron(III) hydroxy- and amino-benzoates (1997)
    Springer
    Journal of thermal analysis and calorimetry 49 (1997), S. 703-711 
    Details
    ISSN: 1572-8943
    Keywords: iron(III) hydroxy-benzoates ; iron(III) aminobenzoates ; IR ; Mössbauer spectroscopy ; thermal decomposition ; XRD
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The thermal decomposition of iron(III) aminobenzoates (o-, m-, p-) and iron(III) hydroxybenzoates (p-, m-, p-) have been investigated from ambient temperature to 873 K in air using derivatography DTG-DTA-TG, Mössbauer, IR spectroscopy and XRD. The importance of Mössbauer spectra recorded at various stages of heating, without separating the product mixture, in studying the mode of decomposition is highlighted. The intermediates (e.g., Fe(II)-species) were confirmed. The nature of water of hydration and the order of stability (p-〉m-〉o-) have been investigated from decomposition temperatures. The kinetic model and parameters have been investigated for dehydration.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01996754
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  • 4
    Electronic Resource
    Electronic Resource
    Comparative study of the thermal analyses of some transition metal(II) maleates and fumarates (1987)
    Springer
    Journal of thermal analysis and calorimetry 32 (1987), S. 569-577 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die thermische Zersetzung von Maleaten und Fumaraten von Cu(II) und Zn(II) wurde mittels simultan angewandter nicht-isothermer Techniken (DTG, DTA und TG) untersucht. Die Endprodukte sind die entsprechenden Metalloxide, wie durch chemische Analyse und Röntgendiffraktometrie nachgewiesen wurde. Ein Vergleich der Tm-Werte ergab für die Stabilität in der Dehydratisierungs- bzw. Zersetzungsreaktion die Reihenfolgen Cu (F) 〉 Cu (M); Zn (F) 〉 Zn (M) bzw. Cu (M) ≈ Cu (F); Zn (F)〉Zn (M).
    Abstract: Резюме Совмещенным неизоте рмическим методом ДТ Г, ДТА и ТГ изучено термичес кое разложение малеатов и фумаратов меди и цин ка. Конечными продуктам и реакции разложения являлись окиси соотв етствующих металлов, идентифицированных химическим анализом и рентгенофазовым ана лизом. Согласно значе ниямT m , устойчивость компле ксов располагается в ряд Cu (F)〉Cu (M); Zn (F)〉Zn (M) и Cu (M) ≈ Cu (F); Zn (F)〉Zn (M), соотв етственно, для реакций дегидратаци и и разложения.
    Notes: Abstract The thermal decompositions of maleates and fumarates of Cu(II) and Zn(II) have been studied by employing simultaneous non-isothermal techniques (DTG, DTA and TG). The end-products are the corresponding metal oxides, as characterized by chemical analysis and X-ray diffraction. Comparison of theTm values led to the stability sequences Cu(F)〉Cu(M); Zn(F)〉Zn(M) and Cu(M)≈ Cu(F); Zn(F)〉Zn(M) for dehydration and decomposition, respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01912710
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  • 5
    Electronic Resource
    Electronic Resource
    Applications of thermal analysis in some solid-state reactions (1997)
    Springer
    Journal of thermal analysis and calorimetry 49 (1997), S. 1153-1160 
    Details
    ISSN: 1572-8943
    Keywords: solid-state reactions ; thermal analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract TG-DTG-DTA has been used to characterize various isomers of CoCl2·2(CH3C6H4NH2). Thermal analysis is further used to analyse the binary mixtures of these isomers. DTA recorded after different elapsed times follows the progress of reaction between cobalt chloride and benzocaine where progressively small endotherms are associated with starting materials. The application of thermal analysis to following the solid-solid reactions between metal acetates and 8-hydroxyquinoline was highlighted. The stoichiometry of such reactions was confirmed from the decrease in intensity of an endotherm as one increases the stoichiometry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01983670
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  • 6
    Electronic Resource
    Electronic Resource
    Thermal Decomposition of Strontium and Barium Malonates (1999)
    Springer
    Journal of thermal analysis and calorimetry 55 (1999), S. 789-796 
    Details
    ISSN: 1572-8943
    Keywords: alkaline earth malonates ; DSC ; DTA ; kinetic parameters ; TG ; thermal decomposition
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The thermal decomposition of strontium and barium malonates has been studied isothermally and non-isothermally employing simultaneous TG-DTG-DTA, DSC, XRD and IR spectroscopic techniques. DSC of these malonates has been recorded both in oxygen and nitrogen atmospheres. The decomposition is a single step process and the end product formed is carbonate. The energy of activation and frequency factor values for the decomposition of strontium malonate are 547 kJ mol−1 and 1041 s−1 respectively. The activation energy and frequency factor values for isothermal dehydration of barium malonate sester-hydrate are 57–111 kJ mol−1 and 107–1012 s−1 respectively and the corresponding values for decomposition from DSC are 499.5 kJ mol−1 and 1044 s−1 respectively. The higher thermal stability of strontium malonate as compared to that of barium salt is ascribed to its being anhydrous so that decomposition proceeds without restructuring. Their thermal stabilities have also been compared with that of respective oxalate salts.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1010169414001
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  • 7
    Electronic Resource
    Electronic Resource
    Physico-chemical studies on the thermal decompositions of iron(III) phthalates (1986)
    Springer
    Journal of thermal analysis and calorimetry 31 (1986), S. 1007-1015 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die thermische Zersetzung basischer Salze von Eisen(III)-o-phthalat-Sesquihydrat, Fe(C8H4O4)(OH) · 1,5H2O, Eisen(III)-m-phthalat-Trihydrat, Fe(C8H4O4)(OH)·3H2O, und Eisen(III)-p-phthalat-Monohydrat, Fe(C8H4O4)(OH)·H2O, wurden im Temperaturbereich von Raumtemperatur bis 973 K in Luft mittels Mössbauer- und IR-Spektroskopie, Derivatographie (DTG-DTA-TG) und Röntgendiffraktometrie untersucht. Im Gegensatz zu basischem Eisen(III)-m-phthalat erfolgt bei den entsprechendeno- undp-Phthalatverbindungen im Verlaufe der Zersetzung keine Reduktion zu Eisen(II)-Species.α-Fe2O3 wird als Endprodukt erhalten. Mit steigender Zersetzungstemperatur nimmt die Größe derα-Fe2O3-Partikel zu.
    Abstract: Резюме Термичcское разложен ие различных гидрато в основных солей трехв алентного железа и фталевых кислот с об щей формулой Fe(C8H4O4)(OH)·vH2O, гд е x = 1.5,3и 1, соответственно, для о-, м- и n-фталатов, был о изучено до температ уры 973 К в атмосфере воздуха ме тодами ДТГ. ДТА, ТГ, мëссбауэро вской и инфракрасной спектроскопии и рент генофазовым анализо м. В случае о- и n-фталатов термическое разложе ние протекает без восста новления железа, тогд а как разложение m-фтала та сопровождается восстановлением жел еза до двухвалентног о. В качестве конечного п родукта разложения о бразуется α-Fe2O3. С увеличением тем пературы разложения наблюдал ось увеличепие разме ров частиц образующегося α-Fe2O3.
    Notes: Abstract The thermal decompositions of basic salts of iron(III)o-phthalate sesquihydrate, Fe(C8H4O4)(OH)·1.5H2O, iron(III)m-phthalate trihydrate, Fe(C8H4O4)(OH)·3H2O, and iron(III)p-phthalate monhydrate, Fe(C8H4O4)(OH)·H2O, have been investigated from ambient temperature up to 973 K in air using Mössbauer and infrared spectroscopy, derivatography (DTG-DTA-TG) and X-ray diffraction. The thermal decomposition proceeds without reduction to Iron(II) species in the cases of iron(III)o-phthalate and iron(III)p-phthalate, whereas iron(II) species have been detected in the case of basic iron(III)m-phthalate.α-Fe2O3 is formed as the end-product. Increase in the particle size of theα-Fe2O3 with increasing decomposition temperature has also been observed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02119254
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  • 8
    Electronic Resource
    Electronic Resource
    Mössbauer study of the thermal decomposition of iron(III) citrate pentahydrate (1984)
    Springer
    Journal of thermal analysis and calorimetry 29 (1984), S. 439-444 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Die thermische Zersetzung des Pentahydrates von Eisen(III)-citrat in Luft wurde bei verschiedenen Temperaturen durch Mössbauer-Spektroskopie, nicht-isotherme Techniken (DTA, TG) und Röntgendiffraktometrie untersucht. Die Reduktion von Eisen(III) zu Eisen(II) erfolgt bei 553 K. Bei höheren Temperaturen entstehen α-Fe2O3 und γ-Fe2O3 als End-produkte der thermischen Zersetzung.
    Abstract: Резюме Используя неизотерм ические методы (ДТА-Т Г), мвссбауэровскую спе ктроскопию и рентгено-диффракци онный метод, было иссл едовано термическое разложе ние пятигидрата лимонно кислого железа (***) в атм осфере воздуха. При 553 К протек ает восстановление трех валентного железа до двухвалентного. Подт верждено, что при боле е высоких температура х имеет место совмест ное образование а-Fе2О3 и γ-Fe2O3. как конечных продуктов термическ ого разложения.
    Notes: Abstract The thermal decomposition of iron(III) citrate pentahydrate, Fe(C6H5O7) · 5 H2O, has been investigated at different temperatures in air using Mössbauer spectroscopy, nonisothermal techniques (DTA-TG) and X-ray diffraction. The reduction of iron(III) to iron(II) takes place at 553 K. At higher temperature the formation of α-Fe2O3 and γ-Fe2O3 as the ultimate thermal decomposition products has been confirmed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01913454
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  • 9
    Electronic Resource
    Electronic Resource
    Linear free energy relations in solid state reactions II (1988)
    Springer
    Journal of thermal analysis and calorimetry 34 (1988), S. 1359-1374 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Mittels Thermoanalyse wurde die Kinetik der Festkörperreaktion zwischen Kobalt(II)azetat und substituierten Anilinhydrochloriden untersucht. Alle Reaktionen laufen vollständig ab. Die kristallinen Produkte wurden mittels physikalisch-chemischer Methoden charakterisiert. Die Aktivierungsenergie der Reaktion von Kobalt(II)azetat mit Anilin, 3- und 4-Chlor-, 4-Jod-,4-Brom-, 4-Fluor-, 4-Methoxy- und 4-Methylanilin beträgt 83.4,44.2,64.2,100.9,79.8,99.9,168.7 bzw. 135.9 kJ/mol. Bei der Darstellung der Aktivierungsenergie in Abhängigkeit von der Hammettkonstanteσ konnte Linearität mit einem Anstieg von − 169.9 kJ/mol festgestellt werden. Die Reaktivität dieser Reaktionen wurde mittels Kapillar- und thermischen Verfahrens verglichen.
    Abstract: РЕжУМЕ МЕтОДОМ тЕРМИЧЕскОг О АНАлИжА ИжУЧЕНА кИН ЕтИкА РЕАкцИИ МЕжДУ тВЕРДы МИ АцЕтАтОМ кОБАльтА И гИДРОхлОР ИДАМИ жАМЕЩЕННых АНИ лИНА. ВсЕ РЕАкцИИ пРОхОДьт ДО к ОНцА. ОБРАжУУЩИЕсь кРИстА ллИЧЕскИЕ пРОДУкты Б ылИ ОхАРАктЕРИжОВАНы ФИ жИкО-хИМИЧЕскИМИ МЕтОДАМИ. ЁНЕРгИИ Акт ИВАцИИ РЕАкцИИ АцЕтА тА кОБАльтА с гИДРОхлОРИДАМИ АНА лИжА, 3-И 4-хлОР-, 4-ИОД-, 4-БРОМ-, 4-ФтОР-, 4-МЕтИ л- И 4-МЕтОксИАНИлИНОВ РАВНьлИсь, сООтВЕтст ВЕННО, 83,4; 44,2; 64,2; 100,9; 79,8; 99,9; 135,9 И 168,7 кДж·МОль−1. Уст АНОВлЕНА лИНЕИНАь жАВИсИМОсть МЕжДУ ЁНЕРгИьМИ АктИВАцИИ И σ-кОНстАНтАМИ гАММЕ ттА с УглОВыМ НАклОНОМ РАВ НыМ −169,9 кДж·МОль−1. пРОВЕДЕНО сОпОстАВлЕНИЕ РЕАкц ИОННОИ спОсОБНОстИ тАкИх Вж АИМОДЕИстВИИ, УстАНОВлЕННых кАпИл льРНыМ МЕтОДОМ И МЕтО ДОМ тЕРМИЧЕскОгО АНАлИж А.
    Notes: Abstract Kinetics of the reaction between solid cobalt(II) acetate and solid substituted aniline hydrochlorides have been studied by thermal analysis. All the reactions go to completion. The crystalline products were characterized by physico-chemical methods. The energy of activation is 83.4,44.2,64.2,100.9,79.8,99.9, 135.9 and 168.7 kJ mol−1for the reactions of aniline, 3- and 4-chloro-, 4-iodo-, 4-bromo-, 4-fluoro-, 4-methyl- and 4-methoxy aniline hydrochlorides with cobalt acetate. A plot of energy of activation against Hammett'sσ constant is linear with a slope of −169.9 kJ mol−1. A comparison between the reactivity of these reactions by the capillary and the thermal methods has been done.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01914360
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  • 10
    Electronic Resource
    Electronic Resource
    Thermal decomposition of magnesium malonate trihydrate (1989)
    Springer
    Journal of thermal analysis and calorimetry 35 (1989), S. 735-742 
    Details
    ISSN: 1572-8943
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung Mittels TG, DSC, Scanningelektronenmikroskop usw. wurde die Zersetzung des Trihydrates von Magnesiummalonat isotherm und nicht isotherm untersucht. Die Aktivierungsenergie und der Frequenzfaktor für die isotherme Dehydratation betragen 100±5 kJ·mol−1 bzw. 1010 s−1. Die entsprechenden DSC Werte für die Zersetzung betragen 332.9±113 kJ·mol−1 bzw. 1017 s−1. Während der Dehydratation scheint auch eine flüssige Phase aufzutreten, die weitere Zersetzung ist jedoch eine Feststoffreaktion. Das Endprodukt der Zersetzung bei 673 K ist kristallines Magnesiumoxid.
    Abstract: Резюме Используя методы ТГ, Д СК и сканирующую электронную микроск опию, изучено изотермическое и неи зотермическое разло жение тригидрата малоната магния. Значения энер гии активации и частотно го множителя для реак ции изотермической деги дратации составляли, соответственно, 100±5 кдж ·моль−1и 1010 сек−1, тогда как данные, полученные ме тодом ДСК, равнялись, соответст венно 332±113 кдж·моль−1 и 1017 сек−1. Установлено уч астие жидкой фазы в процессе дегид ратации, тогда как дал ьнейшее разложение является твердотельным процессом. Конечным п родуктом разложения при 673 К является кристаллич еский оксид магния.
    Notes: Abstract The decomposition of magnesium malonate trihydrate has been studied isothermally and non-isothermally using TG, DSC, scanning electron microscope etc. The activation energy and frequency factor for isothermal dehydration are 100±5 kJ mol−1 and 1010 s−1 respectively and the corresponding values for decomposition from DSC are 332.9±113 kJ mol and 1017 s−1 respectively. The participation of liquid phase during dehydration is suggeseed while further decomposition is a solid state process. Final decomposition product at 673 K is crystalline magnesium oxide.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02057228
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