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Size effect on thermodynamic parameters for the peanut-like CaMoO4 micro/nano reaction systems

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Abstract

Peanut-like CaMoO4 micro/nano structures with three different sizes were harvested by a simple reverse-microemulsion method at room temperature. Employing synthesized micro/nano CaMoO4 and HCl as reaction systems, thermodynamic parameters such as standard molar enthalpy of reaction Δr H θm , standard molar Gibbs free energy of activation Δ ≠r G θm , standard molar enthalpy of activation Δ ≠r H θm , and standard molar entropy of activation Δ ≠r S θm were successfully acquired for the first time by in situ microcalorimetry. Furthermore, change regularities of the thermodynamic parameters for the micro/nano reaction systems were obtained and discussed. It demonstrated that size effect has significant influence on thermodynamic parameters of micro/nano material reaction systems.

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Acknowledgements

This work was supported by the Natural Science Foundation of China (No. 20963001, No. 21273050) and Guangxi Natural Science Foundation of China (No. 0991001z, No. 0991085).

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Authors and Affiliations

  1. College of Chemistry & Ecological Engineering, Guangxi University for Nationalities, Nanning, 530006, People’s Republic of China

    Gaochao Fan, Zhao Ma & Zaiyin Huang

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  1. Gaochao Fan
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  2. Zhao Ma
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  3. Zaiyin Huang
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Correspondence to Zaiyin Huang.

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Fan, G., Ma, Z. & Huang, Z. Size effect on thermodynamic parameters for the peanut-like CaMoO4 micro/nano reaction systems. J Therm Anal Calorim 116, 485–489 (2014). https://doi.org/10.1007/s10973-013-3515-3

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  • DOI: https://doi.org/10.1007/s10973-013-3515-3

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