Abstract This study focused catalytic transesterification process for the production of biodiesel from restaurant based waste cooking oil. Fifteen pre-designed experiments are used to explore significance three reaction parameters with different levels such as methanol oil ratio, catalyst concentration and agitation speed well their combined effect on production. Box-Behnken experimental design...

Much effort has been devoted to the synthesis of gold nanoparticles with different shapes, including the zero-dimensional nanospheres, one dimensional nanorods, and two-dimensional nanoplates. Compared to zero or one dimensional nanostructures, the synthesis of two-dimensional nanostructures in high yield has always been more involved, often requiring complex and timeconsuming steps such as mor...

In this paper, a series of click reaction-based Bodipy derivatives have been synthesized as part preliminary study. Following the characterization four challenger molecules, photophysical properties (absorption, emission, excitation, molar absorption coefficient, quantum yield, etc.) were examined in various organic solvents. The results showed that energy transfer from cores to other moieties ...

Biodiesel was prepared from Xanthoceras sorbifolium Bunge oil and methanol by transesterification with NaOH as the catalyst. The central composite design (CCD) utilized to optimize its process, Design Expert software applied perform a fitting regression. best process conditions were determined as: 0.9%, molar ratio of 7:1, reaction temperature 62 °C. Under these conditions, yield biodiesel 89.0...

Reaction of cis-diazidobis(ethylenediamine)cobalt(III)nitrate with ammonium thiocyanate in a 1 : 2 molar ratio in aqueous medium gave the title cobalt(III) compound, cis-[Co(en)2(N3)2]SCN, as reddish brown crystals in almost quantitative yield. The complex salt was characterized by elemental analysis, IR, electronic, H and C NMR spectroscopic studies. An X-ray structure determination revealed a...

Reacting an 1:1 stoichiometric molar ratio of ferrocenecarboxaldehyde and 2,2,2-trimethoxy4,5-dimethyl-1,3,2-dioxaphospholene, neat, at room temperature for one week, leads to the diastereoselective formation of a bis-ferrocenyl 1,3-dioxolane complex 1-(4-methyl-2,5diferrocenyl-1,3-dioxolan-4-yl)ethanone (1), in 30% isolated yield. The compound has been fully characterized by FT-IR, monoand two...

Molecular dynamics simulations of myoglobin and aspartate aminotransferase, with explicit solvent, are shown to accurately reproduce the experimentally measured molar volumes. Single aminoacid substitution at VAL39 of aspartate aminotransferase is known to produce large volumetric changes in the enzyme, and this effect is demonstrated in simulation as well. This molecular dynamics approach, whi...

The Mg/La mixed oxide catalyst with varied molar ratio has been synthesized by co-precipitation method and characterized using various analytical techniques. The catalytic activity of the prepared catalysts is studied for synthesis of dimethyl carbonate from cyclic carbonates and methanol. Various reaction parameters such as temperature, reactant ratio and catalyst amount have been studied to o...

The anion-selectivity of the surface of a polymer ultrathin film incorporating an amphiphilic ruthenium(II) polypyridine complex with diperchlorate was examined using X-ray absorption spectroscopy with the total electron-yield method. The adsorbed species on the film surface were found to depend on the chemical composition in water where the film was prepared. By combining the X-ray absorption ...

2-(o-Hydroxyphenyl)-1,8-naphthyridine (HN), 2-(4-hydroxy-6-methylpyran-2-one-3-yl)-1,8-naphthyridine (HMPN) and 2-(benzimidazol-2-yl)-1,8-naphthyridine(BN) react with acetates of Mn(II), Co(II), Ni(II), Cu(II) and Zn(II) to yield metal ion complexes of definite composition. These compounds were characterized by elemental analyses, molar conductivity, magnetic susceptibility measurements, therma...