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Reference : UMR7361-ANDRYZ-002
Workplace : MULHOUSE
Date of publication : Tuesday, September 24, 2019
Scientific Responsible name : Andrey Ryzhikov, Gérald Chaplais, Jean Daou
Type of Contract : PhD Student contract / Thesis offer
Contract Period : 36 months
Start date of the thesis : 1 January 2020
Proportion of work : Full time
Remuneration : 2 135,00 € gross monthly
Description of the thesis topic
PhD work will be performed in the team Materials with Controlled Porosity of IS2M in the frame of multi-partner academic project (ANR MESAMM) devoted to the development of new highly effective systems for storage and absorption of mechanical energy based on high pressure intrusion-extrusion of electrolyte aqueous solutions in hydrophobic microporous materials such as pure silica zeolites (zeosils) and zeolitic imidazolate frameworks (ZIFs). It aims also to the understanding of the mechanism of intrusion process. In these systems, mechanical energy storage relies on forced penetration (intrusion) of a non-wetting liquid into the pores of a material. The supplied mechanical energy is converted to interfacial energy upon transformation of the bulk liquid into a confined fluid in the micropores. Upon release of the exerted pressure, an expulsion of the liquid out of the pores (extrusion) may occur and, thus, the system may restore the mechanical energy.
In the frame of PhD work, The PhD work includes the synthesis of zeolites and Metal-Organic Frameworks (MOFs) by a hydro(solvo)thermal method, intrusion-extrusion experiments of electrolyte solutions and characterization of the materials before and after intrusion-extrusion tests by various methods (X-ray diffraction, solid-state NMR spectroscopy, thermogravimetric analysis, nitrogen adsorption-desorption, scanning electronic microscopy…).
Mulhouse Materials Science Institut (IS2M) is a CNRS-University mixed multidisciplinary research unit located in Haute-Alsace (UMR 7361). It is specialized in material science, particularly, in the development of innovative methods and processes of synthesis, formatting, functionalization and bio-functionalization, in the field of development of characterization methods (specific and/or tailor-made), in the study of interaction mechanisms between a surface and its environment and in the study of correlations of properties on different scales.
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