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UID:ee517d2b-0591-4562-a81d-66ac5c057a25.234641@calendar.missouristate.edu
CREATED:20240327T144750Z
LAST-MODIFIED:20240327T144750Z
LOCATION:Kemper Hall 204
SUMMARY:PAMS Seminar: "Understanding Thermodynamics of Critical Metal Mate
 rials under Extreme Conditions" by Dr. Xiaofeng Guo
DESCRIPTION:Dr. Xiaofeng GuoWashington State UniversityDepartment of Chemi
 stry\n\n\nNote: Dr. Guo will also give a Chemistry &amp; Biochemistry Seminar
  on Wednesday\, April 10.\n\n\nAbstract:\n\n\nCritical metals\, including
  rare earth elements (REE)\, U and Th\, are in high demand due to their p
 ervasive use in emerging technology and renewable energy applications. Un
 derstanding their thermodynamic parameters is crucial for predicting thei
 r transport\, deposit\, and alteration behaviors in relevant geological c
 onditions (e.g.\, extreme conditions). In our group\, we use a set of str
 uctural-thermodynamic techniques to in situ probe chemical and physical c
 hanges of critical metal materials under elevated pressure and/or tempera
 ture conditions. Specifically\, high temperature calorimetry and in situ 
 high temperature X-ray diffraction (XRD) were implemented to investigate 
 phase transition and corresponding enthalpies of reaction and mixing. The
  high pressure structures and equation of states were studied by coupled 
 diamond anvil cell with synchrotron for in situ high pressure XRD\, along
  with density functional theory (DFT). The elastic constants can also be 
 obtained by resonant ultrasonic spectroscopy. By combining these methods\
 , we can obtain more comprehensive thermodynamic parameters for relevant 
 REE mineral phases. In this talk\, I will discuss our recent finding on t
 he high pressure structures of zircon\, xenotime-type minerals (commonly 
 accommondating REE and actinides)\, high temperature transitions of REE p
 hosphates\, and thermodynamic of mixing of REE phosphate and carbonate mi
 neral phases.
X-ALT-DESC;FMTTYPE=text/html:&lt;html&gt;&lt;head&gt;&lt;title&gt;&lt;/title&gt;&lt;/head&gt;&lt;body&gt;&lt;p&gt;&lt;b
 &gt;Dr. Xiaofeng Guo&lt;/b&gt;&lt;br&gt;&lt;b&gt;Washington State University&lt;br&gt;Department of 
 Chemistry&lt;/b&gt;&lt;/p&gt;\n&lt;p&gt;&lt;b&gt;Note: Dr. Guo will also give a Chemistry &amp;amp\; 
 Biochemistry Seminar on Wednesday\, April 10.&lt;/b&gt;&lt;/p&gt;\n&lt;p&gt;Abstract:&lt;/p&gt;\n
 &lt;p&gt;Critical metals\, including rare earth elements (REE)\, U and Th\, are
  in high demand due to their pervasive use in emerging technology and ren
 ewable energy applications. Understanding their thermodynamic parameters 
 is crucial for predicting their transport\, deposit\, and alteration beha
 viors in relevant geological conditions (e.g.\, extreme conditions). In o
 ur group\, we use a set of structural-thermodynamic techniques to in situ
  probe chemical and physical changes of critical metal materials under el
 evated pressure and/or temperature conditions. Specifically\, high temper
 ature calorimetry and in situ high temperature X-ray diffraction (XRD) we
 re implemented to investigate phase transition and corresponding enthalpi
 es of reaction and mixing. The high pressure structures and equation of s
 tates were studied by coupled diamond anvil cell with synchrotron for in 
 situ high pressure XRD\, along with density functional theory (DFT). The 
 elastic constants can also be obtained by resonant ultrasonic spectroscop
 y. By combining these methods\, we can obtain more comprehensive thermody
 namic parameters for relevant REE mineral phases. In this talk\, I will d
 iscuss our recent finding on the high pressure structures of zircon\, xen
 otime-type minerals (commonly accommondating REE and actinides)\, high te
 mperature transitions of REE phosphates\, and thermodynamic of mixing of 
 REE phosphate and carbonate mineral phases.&lt;/p&gt;&lt;/body&gt;&lt;/html&gt;
DTSTART;TZID=America/Chicago:20240411T160000
DTEND;TZID=America/Chicago:20240411T170000
SEQUENCE:0
URL:https://physics.missouristate.edu/seminars.htm
CATEGORIES:Public,Alumni,Current Students,Faculty,Future Students,Staff
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