نتایج جستجو برای: solid acids
تعداد نتایج: 449142 فیلتر نتایج به سال:
Politva, T.I., et al., “Ethylene Hydrogenation in Electrochemical Cell with Solid Proton-Conducting Electrolyte,” Reaction Kinetics and Catalysis Letters, 41(2), 1990, pp. 321-326, no month.* Haile, S.M., “Hydrogen-Bonding and Phase Transitions in ProtonConducting Solid Acids”, Mat. Res. SOC. Symp. Proc. 547 (1999), pp. 315-326, no month.* Zaidi, S.M.J., et al., “Solid Polymer Composite Electro...
The interaction of free fatty acids with cell membranes and lipid bilayers was studied by monitoring the emission polarization changes of the fluorescent probes 1,6-diphenyl-1,3,5-hexatriene (DPH) and 8-anilino-1-naphthalene sulfonate (ANS). It was found that cis unsaturated fatty acids incorporated into plasma membranes reduced DPH and increased ANS polarization, while trans-unsaturated and sa...
The characterizations of vegetable oil wastewater (VOW) are unpleasant odor, dark color, and high organic contents, including large amounts of oil and grease (O&G), chemical oxygen demand (COD), fatty acids and lipids. Therefore, VOWs should be treated efficiently to avoid the environment pollution. The aim of present study was the investigation of VOW biological treatment using membrane biorea...
This study reports the thermodynamics of bound species derived from ethene, propene, n-butene, and isobutene on solid acids with diverse strength and confining voids. Density functional theory (DFT) and kinetic data indicate that covalently bound alkoxides form C-C bonds in the kinetically relevant step for dimerization turnovers on protons within TON (0.57 nm) and MOR (0.67 nm) zeolitic channe...
An improved synthesis of a family of amino acids that contain ω-aminoalkyl groups and of a new family containing ω-carboxyalkyl groups linked to the R-amine is described. The synthesis was performed by alkylation of suitably monoprotected alkylenediamines and protected ω-amino acids with triflates of R-hydroxy acid esters. The reaction proceeded with inversion of configuration yielding opticall...
A sialic acid glycosyl phosphate building block was designed and synthesized. This building block was used to prepare α-sialylated oligosaccharides by automated solid-phase synthesis selectively.
The rate of metal transfer from the solid phase to solution is an important factor governing their concentration in the soil solution and its availability. In this research, the release rate of Zn in contaminated soils from Isfahan was studied using solutions citric acid, oxalic acid and malic acid 0/01 M during the period of 2 - 504 hours and its relationship with soil characteristics was inve...
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