نتایج جستجو برای: tetrabutyl
تعداد نتایج: 120 فیلتر نتایج به سال:
a sensitive and selective extraction - spectrophotometric method for the determination of trace amounts of palladium is reported. the method is based on quantitative extraction of brownish tetrabutylammoium tetraiodopalladium (ii) ion pair into a small valume of chloroform at ph 1.3-12.0, followed by spectrophotometric measurements. the beer's law is obeyed over the range 0.02-1.09 mgml-1 at 44...
Using ethyl paraben as the template molecule and n-tetrabutyl titanate titanium source, molecularly imprinted dioxide (MIP-TiO 2 ) photocatalyst was prepared by sol-gel method. The effects of different pH values, imprinting molecular weights other factors on degradation were studied, materials analyzed TEM, XRD, FT-IR characterization methods. results show that catalyst has a mixed crystal stru...
This work reports and discusses the influence of four phosphonium-based ionic liquids (PhILs), namely trihexyl(tetradecyl) phosphonium dicyanamide, [P(6,6,6,14)][dca]; trihexyl(tetradecyl) phosphonium bis(trifluoromethylsulfonyl)imide, [P(6,6,6,14)][Tf(2)N]; tetrabutyl phosphonium bromide, [P(4,4,4,4)][Br]; and tetrabutyl phosphonium chloride, [P(4,4,4,4)][Cl], on some of the chemical, physical...
Solvothermal crystallization is an adequate approach for preparing differently shaped TiO2 crystalline materials because it highly sensitive to the synthesis parameters change. This study presents two sample series, one prepared from tetraisopropyl orthotitanate TTIP and tetrabutyl TBU. The influence of applied temperature, different capping agents' amount, precursor volume ratio affected measu...
Methylene blue (MB) is a common pollutant in wastewater of printing and dyeing industry. At present, ozone oxidation commonly used the treatment wastewater. Ozone for reaction directly indirectly. However, rate not fast enough. In this study, attapulgite (ATP) was modified by tetrabutyl titanate-ethanol solution. The TiO 2 /ATP nanocomposite with high catalytic activity prepared. synthesized sa...
Extraction of Sm(III)and Nd(III) with N,N,N’,N’-tetrabutyl-3-oxy-diglycolamidefrom hydrochloric acid
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