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Structural study of gas hydrates at high pressures

Grant number: 17/01351-2
Support type:Scholarships abroad - Research Internship - Doctorate (Direct)
Effective date (Start): June 01, 2017
Effective date (End): November 30, 2017
Field of knowledge:Engineering - Chemical Engineering
Principal researcher:Maria Dolores Robustillo Fuentes
Grantee:Davi Éber Sanches de Menezes
Supervisor abroad: Amadeu Kun Wan Sum
Home Institution: Escola Politécnica (EP). Universidade de São Paulo (USP). São Paulo , SP, Brazil
Research place: Colorado School of Mines, United States  
Associated to the scholarship:15/23148-9 - Thermodynamic study on gas hydrate formation and dissociation, BP.DD


This project proposes a research plan for internship in the laboratory of Prof. Dr. Amadeu K. Sum (Colorado, USA) during 6-month in order to complement the thesis in progress entitled "Thermodynamic study of the formation and dissociation of gas hydrates". In short, the proposal is based on the studies in situ of gas hydrates structures at high pressures by Raman and NMR (Nuclear Magnetic Resonance) spectroscopies. Such analyzes may provide data regarding the composition of the hydrate formed, occupancy of the cavities and number of hydration, for example. The experimental results obtained through Raman and NMR spectroscopies must be analyzed along with those already obtained by high pressure differential scanning calorimetry at the Laboratory of Hydrates in the Polytechnic School of USP. This set of experimental information will represent the basis to justify the behavior of some thermodynamic properties of specific hydrates in front of the composition of the gas phase and to evaluate if the non-homogeneity of the aqueous phase of the system could affect these properties significantly. Thus, this project presents the planning of studies to be conducted in the partner research center of the direct doctorate project mentioned above as a way to aggregate data and fundamental knowledge to the research carried out until then. (AU)

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Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
SANCHES DE MENEZES, DAVI EBER; PESSOA FILHO, PEDRO DE ALCANTARA; ROBUSTILLO FUENTES, MARIA DOLORES. Phase equilibrium for methane, ethane and carbon dioxide hydrates at pressures up to 100 MPa through high-pressure microcalorimetry: Experimental data, analysis and modeling. Fluid Phase Equilibria, v. 518, n. SI AUG 15 2020. Web of Science Citations: 0.
SANCHES DE MENEZES, DAVI EBER; PESSOA FILHO, PEDRO DE ALCANTARA; ROBUSTILLO FUENTES, MARIA DOLORES. Use of 1-butyl-3-methylimidazolium-based ionic liquids as methane hydrate inhibitors at high pressure conditions. Chemical Engineering Science, v. 212, FEB 2 2020. Web of Science Citations: 0.
SANCHES DE MENEZES, DAVI EBER; SUM, AMADEU K.; DESMEDT, ARNAUD; PESSOA FILHO, PEDRO DE ALCANTARA; ROBUSTILLO FUENTES, MARIA DOLORES. Coexistence of sI and sII in methane-propane hydrate former systems at high pressures. Chemical Engineering Science, v. 208, NOV 23 2019. Web of Science Citations: 3.

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