The rate of batch extraction of gallium from alkaline aqueous solution was studied by adding 2-ethylhexanoic acid in organic phase containing 7-substituted-8-hydroxyquinoline(extractant N601), n-decanol and kerosene.T...The rate of batch extraction of gallium from alkaline aqueous solution was studied by adding 2-ethylhexanoic acid in organic phase containing 7-substituted-8-hydroxyquinoline(extractant N601), n-decanol and kerosene.The extraction of Ga can be considered as a pseudo-homogeneous first-order reac- tion.The neutralization and distribution of organic acid between phases during the extraction were studied. The effect of 2-ethylhexanoic acid on the protonation of N601 is insignificant.The extraction of HCl during the stripping of gallium is mainly dependent on the concentration of aqueous hydrochloric acid and the con- tent of N601.Under the given conditions of temperature and N601 content,the acidity of organic phase is a linear function of the concentration of carboxylic acid in organic phase and the concentration of hydrochloric acid in equilibrium aqueous phase,if the latter is 1.9～5.6 mol/L.展开更多
An effective synthetic route for preparation of 2-chloro-6-fluorobenzonitrile, 2-chloro-6-fluorobenzamide and 2-chloro-6-fluorobenzoic acid has been described. It includes diazotization, fluorination, ammoxidation and...An effective synthetic route for preparation of 2-chloro-6-fluorobenzonitrile, 2-chloro-6-fluorobenzamide and 2-chloro-6-fluorobenzoic acid has been described. It includes diazotization, fluorination, ammoxidation and hydrolysis reactions.展开更多
The title compound （R）-N′-[2-（4-methoxy-6-chloro）-pyrimidyl]-N-[3-methyl-2-（4- chlorophenyl）butyryl]-urea has been synthesized, and its crystal structure and biological behaviors were studied. Crystallographic ...The title compound （R）-N′-[2-（4-methoxy-6-chloro）-pyrimidyl]-N-[3-methyl-2-（4- chlorophenyl）butyryl]-urea has been synthesized, and its crystal structure and biological behaviors were studied. Crystallographic data： C17H18C12N4O3, Mr = 397.25, monoclinic, space group P21/c, a = 12.331（2）, b = 14.025（3）, c = 23.085（5） A, β = 99.607（4）°, Z = 8, V = 3936.2（13） A3, Dc = 1.341 g/cm^3, F（000） = 1648, R = 0.0718, wR = 0.1585 and/t（MoKα） = 0.353 mm^-1. The preliminary biological tests showed that the title compound has definite insecticidal and fungicidal activities.展开更多
New solid complexes of europium, uranyl and zinc ions with N-oxides of 4-chloro-2,6-dimethylpyridine, quinoline and 4-meth- oxyquinaldinic acid in presence different anions were obtained and characterized by elemental...New solid complexes of europium, uranyl and zinc ions with N-oxides of 4-chloro-2,6-dimethylpyridine, quinoline and 4-meth- oxyquinaldinic acid in presence different anions were obtained and characterized by elemental and TG analyses, IR and luminescence spectra. The compounds are crystalline, hydrated or anhydrous salts with colours typical of metal ions. Thermal studies showed that in hydrated salts lattice or coordination water molecules are present. A role of different anions in the formation of various types of the complexes is presented.展开更多
文摘The rate of batch extraction of gallium from alkaline aqueous solution was studied by adding 2-ethylhexanoic acid in organic phase containing 7-substituted-8-hydroxyquinoline(extractant N601), n-decanol and kerosene.The extraction of Ga can be considered as a pseudo-homogeneous first-order reac- tion.The neutralization and distribution of organic acid between phases during the extraction were studied. The effect of 2-ethylhexanoic acid on the protonation of N601 is insignificant.The extraction of HCl during the stripping of gallium is mainly dependent on the concentration of aqueous hydrochloric acid and the con- tent of N601.Under the given conditions of temperature and N601 content,the acidity of organic phase is a linear function of the concentration of carboxylic acid in organic phase and the concentration of hydrochloric acid in equilibrium aqueous phase,if the latter is 1.9～5.6 mol/L.
文摘An effective synthetic route for preparation of 2-chloro-6-fluorobenzonitrile, 2-chloro-6-fluorobenzamide and 2-chloro-6-fluorobenzoic acid has been described. It includes diazotization, fluorination, ammoxidation and hydrolysis reactions.
基金This work was sponsored by the National Key Technologies R & D Programs (No. 2004BA308A22-8)
文摘The title compound （R）-N′-[2-（4-methoxy-6-chloro）-pyrimidyl]-N-[3-methyl-2-（4- chlorophenyl）butyryl]-urea has been synthesized, and its crystal structure and biological behaviors were studied. Crystallographic data： C17H18C12N4O3, Mr = 397.25, monoclinic, space group P21/c, a = 12.331（2）, b = 14.025（3）, c = 23.085（5） A, β = 99.607（4）°, Z = 8, V = 3936.2（13） A3, Dc = 1.341 g/cm^3, F（000） = 1648, R = 0.0718, wR = 0.1585 and/t（MoKα） = 0.353 mm^-1. The preliminary biological tests showed that the title compound has definite insecticidal and fungicidal activities.
文摘New solid complexes of europium, uranyl and zinc ions with N-oxides of 4-chloro-2,6-dimethylpyridine, quinoline and 4-meth- oxyquinaldinic acid in presence different anions were obtained and characterized by elemental and TG analyses, IR and luminescence spectra. The compounds are crystalline, hydrated or anhydrous salts with colours typical of metal ions. Thermal studies showed that in hydrated salts lattice or coordination water molecules are present. A role of different anions in the formation of various types of the complexes is presented.
