نتایج جستجو برای: aminolysis
تعداد نتایج: 308 فیلتر نتایج به سال:
CrN/Cu composite powders were synthesized by employing a novel two-step technique. Firstly, the Cr2O3+CuO precursors were prepared by the solution combustion synthesis (SCS) method using cupric nitrate, urea, and chromium nitrate as initial materials. Subsequently, the SCS precursors were calcined at 850 °C in NH3 for 6 h, and transformed to CrN/Cu composite powders. The composite powders consi...
The reactions of ethyl Y-phenyl chloro (1) and chlorothio (2) phosphates with X-anilines in acetonitrile at 55.0 degrees C are studied kinetically and theoretically. Kinetic results yield the primary kinetic isotope effects (k(H)/k(D) = 1.07-1.80 and 1.06-1.27 for 1 and 2, respectively) with deuterated aniline (XC(6)H(4)ND(2)) nucleophiles, and the cross-interaction constants rho(XY) = -0.60 an...
In the present study, we report synthesis and catalytic activity of tungsten- molybdenum-promoted mesoporous metal oxides in aminolysis epoxides. The as-synthesized catalysts were fully characterized by a variety techniques such as transmission electron microscopy (TEM), scanning (SEM), temperature-programmed reduction (TPR) desorption (TPD), nitrogen sorption measurements, powder X-ray diffrac...
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