Thermodynamic properties and equilibrium constant of chemical reaction in nanosystem: An theoretical and experimental study |
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| Institution: | 1. Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, PR China;2. University of Chinese Academy of Sciences, Beijing 10049, PR China;1. Kazan State Architect and Civil Engineering University, 1 Zelenaya, 420043, Kazan, Russia;2. Department of Chemistry, Moscow State University, 1-3 Lenin''s Hills, 119991, Moscow, Russia;3. A.E. Arbuzov Institute of Organic and Physical Chemistry, RAS, 8 Arbuzov Str., 420088, Kazan, Russia;4. Kazan National Research Technological University, 68, Karl Marx Str., Kazan, 420015, Russia;1. School of Metallurgy and Chemical Engineering, Jiangxi University of Science and Technology, Ganzhou, 341000, PR China;2. College of Chemistry and Chemical Engineering, Gannan Normal University, Ganzhou, 341000, PR China;1. College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Shenyang 11660, PR China;2. Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, PR China;3. Institute of Materia Medica, Chinese Academy of Medical Science & Peking Union Medical College, Beijing 100050, PR China;4. Institute of Process Engineering and Chinese Academy of Sciences, Beijing 100190, PR China;5. College of Chemistry and Materials, Hebei Normal University, Shijiazhuang 050016, PR China;6. Department of Materials Science and Engineering, University of Delaware, Newark, DE 19716, United States |
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| Abstract: | The theoretical relations of thermodynamic properties, the equilibrium constant and reactant size in nanosystem are described. The effects of size on thermodynamic properties and the equilibrium constant were studied using nanosize zinc oxide and sodium bisulfate solution as a reaction system. The experimental results indicated that the molar Gibbs free energy, the molar enthalpy and the molar entropy of the reaction decrease, but the equilibrium constant increases with decreasing reactant size. Linear trends were observed between the reciprocal of size for nano-reactant and thermodynamic variable, which are consistent with the theoretical relations. |
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