نتایج جستجو برای: amberlyst
تعداد نتایج: 162 فیلتر نتایج به سال:
Abstract The aldol reaction of bio acetone in presence a strongly basic ion exchange resin was carried out with and without the addition water temperature range between ? 30 °C 45 °C. conversion, selectivity service time resins were investigated stirred batch reactor continuous fixed bed reactor. For experiments, both conversion increased decreasing temperature. Furthermore, to medium has posit...
In this work, a new type of agaran-derived non-ionic surfactants has been prepared through the one-pot transformation agarose into 3,6-anhydro L- and D-galactose acetal monomers dimers possessing one or two alkyl chains according to cyclic open form units. The steps process involves butanolysis butyl mono- disaccharide acetals promoted by presence Amberlyst-15Dry, followed transacetalization wi...
This work investigates the liquid-phase adsorption of n-butanol on Amberlyst™15 in temperature range 295–323 K at different initial adsorbate concentrations. The adsorbent was characterized by N2 physisorption, Fourier transform infrared pyridine, scanning electron microscopy, and powder X-ray diffraction. data obtained confirmed an structure with two porosity levels amorphous polymer structure...
An efficient and environmentally benign one-pot condensation of cyclic diketones, aldehydes naphthols was achieved with 1,4-diazabicyclo[2-2-2]octane supported on Amberlyst-15 as a novel catalyst, producing variety benzoxanthenones in good to excellent yields. The advantages this multicomponent reaction include the use heterogeneous solventless conditions simple methodology that is atom-economi...
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