Thermal decomposition of calcium citrate tetrahydrate

Mansour, S.A.A.

doi:10.1016/0040-6031(94)85118-2

Cited by 47 publications

(31 citation statements)

References 3 publications

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“…Finally, an endotherm is observed when CaCO 3 decomposes in the range of 641.6 to 733.2 °C, which results in the formation of CaO. Similar results have been obtained previously when the thermal decomposition of calcium citrate tetrahydrate was studied [7].…”

Section: Resultssupporting

confidence: 75%

“…The thermal decomposition of calcium citrate tetrahydrate in both synthetic air and under a nitrogen atmosphere has been previously studied [7]. The results indicated that the decomposition occurred in five steps: two dehydration steps associated with the formation of the anhydrous compound; the thermal decomposition of calcium citrate with the formation of calcium carbonate; and finally, the decomposition step with the formation of calcium oxide.…”

Section: Introductionmentioning

confidence: 97%

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Determination of calcium in tablets containing calcium citrate using thermogravimetry (TG)

Araújo¹,

Morais²,

Santos³

et al. 2014

Braz. J. Therm. Anal.

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The present study utilized thermogravimetry (TG) and optical emission spectroscopy with inductively coupled plasma (ICP/OES) to determine the amount of calcium in calcium citrate tablets, which are used for the treatment of osteoporosis. The samples were characterized using Fourier transform infrared spectroscopy (FTIR), termogravimetry/derivative thermogravimetry (TG/DTG), differential thermal analysis (DTA), differential scanning calorimetry (DSC) and X-ray diffraction (XRD). In the DTA and DSC curves obtained, both endo-and exothermic events were observed, which are indicative of dehydration and decomposition, respectively. The X-ray diffractograms showed that the samples present crystallinity. Additionally, peaks observed in the X-ray diffractograms indicate the presence of a calcium hydroxide residue due to the reaction between calcium oxide with moisture in the air. The calcium content obtained by TG from the tablet sample (17.77%) was similar to that obtained using ICP-OES (16.84%).

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Section: Resultssupporting

confidence: 75%

Section: Introductionmentioning

confidence: 97%

Determination of calcium in tablets containing calcium citrate using thermogravimetry (TG)

Araújo¹,

Morais²,

Santos³

et al. 2014

Braz. J. Therm. Anal.

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“…Step II (272–477 °C) involves the melting of zinc citrate and subsequent decomposition of Zn 3 (C 6 H 5 O 7 ) 2 as well as the production of ZnCO 3 , carbonized products, and some gases such as CO and CH 4 . In step III, ZnCO 3 decomposes into ZnO and CO 2 and the weight loss of zinc citrate is ≈55.22% . Figure b shows the XRD pattern of ZnO/porous carbon microspheres.…”

Section: Resultsmentioning

confidence: 99%

In Situ Synthesis of ZnO/Porous Carbon Microspheres and Their High Performance for Lithium‐Ion Batteries

Gao

Lai

et al. 2019

Physica Status Solidi (a)

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The applications of ZnO anode material in lithium-ion batteries are limited due to its large volume changes and low electric conductivity in dischargecharge cycles. In the study, the molecular-level design is employed to develop a novel ZnO/porous carbon composite structure. With zinc citrate as the precursor, ZnO/porous carbon microspheres self-assembled by nanosheets are successfully synthesized according to the carbonization method. ZnO particles with the size of 10-30 nm are uniformly dispersed inside porous carbon, which acts as a buffer layer. As the anode material, ZnO/porous carbon microspheres exhibit excellent cycle capacity (557 mAh g À1 at 100 mA g À1 ) and rate performance (304 mAh g À1 at 1 A g À1 ). The as-prepared ZnO/porous carbon microspheres not only guarantee the structural integrity of electrode, but also directly solve the problem of capacity fading. The in situ composite structure may endow ZnO/porous carbon microspheres with wide application potentials in lithium-ion batteries. The study may also pave a new way to design high-performance anode materials for lithium-ion batteries at the molecular scale.

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“…In Figure is shown the TGA and corresponding derivative curve of the mixtures containing CA and CaO. In the mixture C3Ca several weight loss steps are identified which are related to the decomposition of calcium citrate tetrahydrate as reported previously by Mansour, result of the complexes formation between CA and Ca 2+ . Additional weight loss steps at 182 to 184 °C and 231 to 233 °C appear in both mixtures, C1Ca and C3Ca.…”

Section: Resultsmentioning

confidence: 99%

Effect of CaO in the thermal crosslinking of maltodextrin and citric acid: A cooperative action of condensation and ionic interactions

Castro-Cabado¹,

Casado²,

Román

2016

J of Applied Polymer Sci

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The study of the effect of CaO in the thermal crosslinking of maltodextrin with citric acid demonstrates that the addition of small amount of this compound enhances the crosslinking of the cured system under processing conditions. This enhancement of the crosslinking leads to a noticeable improvement of the mechanical properties. The mechanism of the enhanced crosslinking reaction has been deeply analyzed by rheology, FT‐IR, and TGA. The rheological results show that CaO contributes to the crosslinking. This contribution would allow decreasing 10 °C the temperature of curing process. The enhancement of the crosslinking and consequent improvement of mechanical properties is explained by the contribution of the interactions between the Ca2+ and citric acid and the polycondensate network formed between maltodextrin and citric acid. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 44203.

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Thermal decomposition of calcium citrate tetrahydrate

Cited by 47 publications

References 3 publications

Determination of calcium in tablets containing calcium citrate using thermogravimetry (TG)

Determination of calcium in tablets containing calcium citrate using thermogravimetry (TG)

In Situ Synthesis of ZnO/Porous Carbon Microspheres and Their High Performance for Lithium‐Ion Batteries

Effect of CaO in the thermal crosslinking of maltodextrin and citric acid: A cooperative action of condensation and ionic interactions

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