Solid-sate reaction kinetics determination via in situ time-resolved x-ray diffraction
- Univ. of Houston, TX (United States)
Novel sample preparation and data reduction techniques were used to determine quantitative phase abundances from in situ time-resolved X-ray diffraction data and to follow the rate of solid-state reactions. This is illustrated by a study of the formation of YBa[sub 2]Cu[sub 3]O[sub 6] from an intimate mixture of BaCO[sub 3], CuO, and Y[sub 2]O[sub 3] under controlled atmospheres. Thin layers of precursor powder were used as samples to minimize thermal gradients and obtain suitable data for Rietveld refinement. The mass fractions of the reacting phases were determined by comparing the integrated intensities of selected reflections acquired over short time intervals during the reaction to those at the end of the reaction. Phase abundances were quantified via Rietveld refinement of room-temperature diffraction data taken upon completion of the reactions.
- OSTI ID:
- 7072225
- Journal Information:
- Journal of Solid State Chemistry; (United States), Vol. 108:1; ISSN 0022-4596
- Country of Publication:
- United States
- Language:
- English
Similar Records
A neutron diffraction study of Ca doped and oxygen deficient YBa{sub 2}Cu{sub 3}O{sub 7-{delta}}
Time-resolved in situ Studies of Apatite Formation in Aqueous Solutions
Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
36 MATERIALS SCIENCE
BARIUM CARBONATES
CHEMICAL REACTION KINETICS
COPPER OXIDES
YTTRIUM OXIDES
BARIUM COMPOUNDS
CUPRATES
PHASE STUDIES
TIME RESOLUTION
YTTRIUM COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
COPPER COMPOUNDS
KINETICS
OXIDES
OXYGEN COMPOUNDS
REACTION KINETICS
RESOLUTION
TIMING PROPERTIES
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties
360202 - Ceramics
Cermets
& Refractories- Structure & Phase Studies