13450-90-3Relevant articles and documents
Thermogravimetric study of GaAs chlorination between -30 and 900 °c
Tunez, Fernando M.,Gonzalez, Jorge A.,Ruiz, María Del C.
, p. 124 - 136 (2011)
Gallium (as GaAs) is at present an essential part of electronic devices, and the recovery of this element from electronic wastes is fundamental for the metallurgic industry. In this work, with the aim of recovering Ga by chlorination, the following reacti
The binary Ph2PCl/GaCl3 system: A room-temperature molten medium for P-P bond formation
Weigand, Jan J.,Burford, Neil,Decken, Andreas
, p. 4343 - 4347 (2008)
An equimolar reaction mixture of Ph2PCl and GaCl3 at room temperature results in the formation of a melt M consisting of the donor-acceptor complex Ph2PCl→GaCl3 (1a), the chloro(diphenylphosphanyl)diphenylphosphonium cation (2a), and the counteranions [GanCl3n+1]- (n = 1, 2, 3). The melt has been characterized by Raman and NMR spectroscopy and is compared with the reaction mixture of Ph2PCl and GaCl3 observed in solution (CH 2Cl2). The melt provides a facile and reactive source of the diphenylphosphenium cation, as demonstrated with use for P-P bond insertion into (PhP)5, to give the 2,3,4,5-tetraphosphanyl-1,4-diphosphonium dication (3), and reductive coupling with gallium metal to give the diadduct Cl3GaPPh2PPh2GaCl3 (5). Wiley-VCH Verlag GmbH & Co. KGaA, 2008.
Thermodynamic characteristics of gaseous GaCl3pyz and GaCl 3pyzGaCl3 complexes
Timoshkin,Berezovskaya,Suvorov,Misharev
, p. 1173 - 1179 (2005)
Thermodynamic characteristics of vaporization and gas-phase dissociation of the complexes GaCl3pyz and GaCl3pyzGaCl3 (pyz is pyrazine) were determined by static tensimetry with a membrane zero gage. Structural and thermodynamic characteristics of the complexes were calculated by the B3LYP/pVDZ quantum-chemical method.
Gallium alkoxides: Synthesis and properties
Suslova,Turova,Mityaev,Kepman,Gohil
, p. 665 - 675 (2008)
Compounds Ga(OR)3 (R = Me, Et, Pri, Bun, C2H4OMe) were synthesized by exchange reactions between gallium chloride and alkali metal alkoxides, the reetherefication of Ga(OPr i)3 and Ga(OC2H4OMe)3 by other ROH (R = Me, Et), and anodic dissolution of metallic gallium in the presence of a electroconductive additive (LiCl, Bu4NBr). When solid GaCl3 is introduced into an alcoholic solution of NaOEt, stable soluble gallium oxoalkoxyhalides are formed. The same reaction with a GaCl 3 solution in toluene or electrochemical synthesis produces nonvolatile Ga(OEt)3 samples, which have the polymer zigzag configuration [Ga(OR)4/2(OR)]∞. Mass spectrometry shows that only Ga(OPri)3 and freshly prepared X-ray amorphous Ga(OEt)3 samples (produced by reetherefication) are transferred to the gas phase. The spectra of the latter contain ions generated by penta-and hexanuclear oxoalkoxide molecules, along with fragments of orthospecies [Ga(OEt)3]2-4. IR spectra are described for all compounds synthesized.
Batyaev, I. M.,Danil'chuck, N. V.,Kabatskii, Yu. A.,Shapovalov, V. N.,Shilov, S. M.
, (1989)
Porous fluorinated aluminum and mixed gallium/aluminum oxide pillared tin phosphate materials with acid properties
Braos-Garci?a, Pilar,Rodri?guez-Castello?n, Enrique,Maireles-Torres, Pedro,Olivera-Pastor, Pascual,Jime?nez-Lo?pez, Antonio
, p. 1672 - 1678 (1998)
Fluorinated aluminum and mixed gallium/aluminum oligomers of high nuclearity have been intercalated into α-tin phosphate by refluxing fluorinated Al and mixed Ga/Al oligomeric solutions in the presence of colloidal tin phosphate. 31P and 27Al MAS NMR spectroscopy has revealed the existence of strong interactions between the phosphate layers and the oligomeric guest species, conferring to these expanded materials a high thermal stability, as confirmed by XRD studies. Formation of Al and mixed Ga/Al oxide nanoparticle pillars in the interlayer region of tin phosphate, upon calcination at 400 °C, gave rise to porous materials with specific surface areas between 160 and 304 m2 g-1 and micropore volumes close to 0.1 cm3 g-1. The pillared materials are highly acidic solids and behave as dehydrating catalysts for the decomposition reaction of isopropyl alcohol. The Lewis acid sites, believed to be mainly responsible for the catalytic activity, are associated with low coordination sites of Al ions present in the interlayer oxide pillars.
Controlled synthesis of monodispersed AgGaS2 3D nanoflowers and the shape evolution from nanoflowers to colloids
Yuan, Yanping,Zai, Jiantao,Su, Yuezeng,Qian, Xuefeng
, p. 1227 - 1235 (2011)
Monodispersed AgGaS2 three-dimensional (3D) nanoflowers have been successfully synthesized in a soft-chemical system with the mixture of 1-octyl alcohol and cyclohexane as reaction medium and oleylamine as surfactant. The crystal phase, morphology and chemical composition of the as-prepared products were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and high-resolution TEM (HTEM), respectively. Results reveal that the as-synthesized AgGaS2 nanoflowers are in tetragonal structure with 3D flower-like shape. Controlled experiments demonstrated that the shape transformation of AgGaS2 nanocrystals from 3D nanoflowers (50 nm) to nanoparticles (1020 nm) could be readily realized by tuning the reaction parameters, e.g., the ratio of octanol to cyclohexane, the length of carbon chain of fatty alcohol, the concentration of oleylamine, etc. The UVvis and PL spectra of the obtained AgGaS2 nanoflowers and colloids were researched. In addition, the photoelectron energy conversion (SPV) of AgGaS 2 nanoflowers was further researched by the surface photovoltage spectra.
Activation of metallic aluminum by tin and gallium chlorides in oxidation with water
Burlakova,Shilkin,Kravchenko,Dremova,Kravchenko,Ivanov,Bulychev
, p. 238 - 243 (2012/07/02)
We have studied the effect of gallium chloride and tin chloride solutions on the water oxidation of aluminum at SnCl2 concentrations of 0.68 and 6.32 wt %, GaCl3 concentrations of 0.56 and 2.67 wt %, and MCln : Al(M = Sn, Ga; n = 2, 3) molar ratios from 0.017 to 0.3. The results indicate that, when aluminum is oxidized in the presence of these salts, the reaction rate and hydrogen yield increase with reaction temperature and salt concentration and reach the highest levels when a mixture of gallium and tin chlorides is used. The reaction products are identified and the likely mechanism of the processes involved in the oxidation of aluminum is discussed. Pleiades Publishing, Ltd., 2012.