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SUMMARY:Some features of the structure rearrangement in mixed and binary Z
 r-Ti sol xerogels.
DTSTART;VALUE=DATE-TIME:20160705T090000Z
DTEND;VALUE=DATE-TIME:20160705T100000Z
DTSTAMP;VALUE=DATE-TIME:20260712T182936Z
UID:indico-contribution-1299@indico.inp.nsk.su
DESCRIPTION:Speakers: Yury Gaponov (Department of atmospheric research\, N
 ovosibirsk State University\, Novosibirsk\, Russia)\nProcess of gelation a
 nd thermal decomposition at different temperatures of the Zr/Ti sol-xeroge
 ls\, chemically identical but prepared by different methods (mixed and bin
 ary)\, was studied by SAXS/WAXD with the use of SR.\nPrimary particles in 
 mixed and binary Zr/Ti sol-xerogels have different structure. Using the qu
 alitative contrast variation method it was concluded\, that primary partic
 le in mixed system consists of Ti nuclear surrounded by Zr atoms in the ou
 ter layer of the particle. In contrast\, primary particle in binary system
  consists of Zr nuclear surrounded by Ti atoms in the outer layer of the p
 article.\nMultistage thermal decomposition of the Zr/Ti xerogels proceeds 
 through an intermediate phase formation. In the case of the mixed Zr/Ti xe
 rogel the intermediate phase has a distorted (amorphous) structure of anat
 ase (TiO2) which is formed\, probably\, inside the primary particle of the
  xerogel. In this case\, during the thermal decomposition the interatomic 
 distance in the intermediate phase is similar to the interplane distance o
 f metal planes in final product (crystalline ZrTiO4 powder). In the case o
 f a binary Zr/Ti xerogel\, the intermediate phase has an amorphous structu
 re consisting\, probably\, of the disordered metal atoms (probably\, in an
  oxide state) surrounded by water molecules.\n\nhttps://indico.inp.nsk.su/
 event/3/contributions/1299/
LOCATION:Budker INP 2nd and 3rd floors
URL:https://indico.inp.nsk.su/event/3/contributions/1299/
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