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SUMMARY:IMX Talks - Thermodynamic-kinetic modelling of precipitation proce
 sses
DTSTART:20210623T130000
DTEND:20210623T140000
DTSTAMP:20260503T154247Z
UID:a173cf150e3a36c8a1dc7e486d0be31977a455860c64a05add7027af
CATEGORIES:Conferences - Seminars
DESCRIPTION:Dr. Andrea Testino\, Paul Scherrer Institute\nThe understandin
 g of solid formation from solution is an important topic in many fields of
  science and technology. It is a complex phenomenon result of convoluted e
 lementary processes described by approximated equations\, which are based 
 on simplified theoretical frameworks. Despite these limitations\, it is po
 ssible to tackle the problem by collecting accurate experimental data and 
 applying models in order to identify a plausible and consistent pathway on
  the solid formation\, with some prediction capabilities. Moreover\, the s
 ome physical properties of the solid\, such as the solid-liquid interfacia
 l energy\, can be estimated. The ultimate goal is that to influence the fo
 rmation pathway in order to control the physicochemical properties of the 
 product.\nThis exercise needs a multidisciplinary approach where analytica
 l techniques\, using ordinary laboratory apparatus or with the help of syn
 chrotron light\, are combined with computational tools. The coding needs t
 o solve thermodynamic constraints on aqueous speciation\, kinetics equatio
 ns associated with the elementary processes\, such as nucleation and growt
 h\, as well as mass balance equations associated with the particulate syst
 em\, such as by means of the population balance approach.\nIn the talk\, a
  possible strategy to study a precipitation process will be described\, us
 ing the formation of calcium aluminate sulfates as case study\, an importa
 nt class of materials for the cement industry.\nBio: Andrea Testino\, Seni
 or Scientist at the Paul Scherrer Institut\, is focusing his scientific in
 terests on fundamental aspects of nanoparticles formation and characteriza
 tion. The applied synthetic approaches are selected among those that allow
  collecting time-resolved experimental data and might be scaled to larger 
 quantities. The investigation method has been applied for the preparation 
 of nanomaterials as metals (such as Ni\, Ag\, Au\, Pt)\, simple and comple
 x metal oxides (such as CexZr(1-x)O2\, perovskites\, spinels)\, doped-meta
 l oxide (such as noble metal doped CeO2)\, and sparingly soluble salts suc
 h as calcium carbonate\, silicate\, phosphate\, and aluminum sulfate hydra
 te. The produced materials are used for several applied fields\, from cata
 lysis to biomedical devices.\n 
LOCATION:https://epfl.zoom.us/j/68465445002
STATUS:CONFIRMED
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