37691-27-3Relevant academic research and scientific papers
Growth of spherulitic crystal patterns in a Belousov-Zhabotinski type reaction system
Yadav, Narendra,Srivastava
, p. 1080 - 1087 (2011/07/08)
The growth of spherulitic crystal patterns in a Belousov-Zhabotinski (BZ) type reaction system by using acetyl acetone (AA)-succinic acid (SA) as dual organic substrates has been reported. The reaction system in the liquid phase has been found to show concentric ring-like wave patterns. A colloidal phase composed of numerous fine particles has also been observed during reaction. The solid phase nucleation has been found to occur in the colloidal phase, which leads to the formation of some stable nucleus centers. The solid phase nucleus has been found to grow in symmetric crystal patterns, with the progress of reaction, exhibiting spherulitic morphology. The possible growth behavior of spherulites has also been discussed. The spherulitic structure composed of fine crystal fibrils diverging from a common center have been observed by a scanning electron microscopy (SEM) technique. The polymorphic crystalline phase, found in spherulites has been supported by thermal characterization (TGA/DTA) and X-ray diffraction (XRD) patterns of crystal materials. The Royal Society of Chemistry and the Centre National de la Recherche Scientifique 2011.
Matrix-isolation infrared spectra of HOOBr and HOBrO produced upon VUV light irradiation of HBr/O2/Ne system
Akai, Nobuyuki,Wakamatsu, Daisuke,Yoshinobu, Takeo,Kawai, Akio,Shibuya, Kazuhiko
, p. 117 - 120 (2011/01/05)
Vacuum ultraviolet (VUV) light photolysis of an HBr/O2 mixture in a Ne matrix has produced HO2Br isomers (HOOBr and HOBrO), which are important reaction intermediates in atmospheric chemistry. The observed bands have been assigned with an aid of a quantum chemical calculation at CCSD/aug-cc-pVDZ. These assignments have been confirmed by the experimental results using isotopic species of 18O2 or DBr. Their characteristic bands are discussed in comparison with those of HOOCl and HOClO from an HCl/O2 mixture [7]. Both HOOBr and HOBrO are found to be photolyzed with the UV light below 385 nm.
Inorganic Bromate Oscillators. Bromate-Manganous-Reductant
Alamgir, Mohamed,Orban, Miklos,Epstein, Irving R.
, p. 3725 - 3728 (2007/10/02)
A family of systems containing bromate and manganous ions and an inorganic reductant such as hydrazine, sulfite, arsenite, stannous, or iodide ion exhibits sustained oscillations in a flow reactor.These systems show bistability as well.Model calculations predict limit cycle behavior if the bromide flow of the minimal bromate oscillator is replaced by a flow of a reductant which generates bromide from Br2 and/or HOBr sufficiently rapidly.
