Hydrogen storage is a crucial technology for the realization of a carbon-neutral society. However, few materials have been able to approach useful hydrogen storage capacity at reasonable temperatures and pressures. Graphene has an extremely high surface-area-to-weight ratio, is strong, cheap, ch...
Interaction of FeX 3 , X=Cl, Br with 3 equiv. of NaOEt in toluene/ethanol media provides mixtures of iron (III) oxoethoxide, Fe 5 O(OEt) 13 , and its halide alkoxide analogs. The latter have been identified by mass-spectrometric study as Fe 5 O(OEt) 12 X a...
A high-pressure (ca. 10kbar) reaction of 1-methoxybuta-1,3-diene 1 with variously O-protected glycolaldehydes 2, catalyzed by the chiral (salen)Cr(III)Cl 4a–d and 5 or (salen)Co(II) 6a–f and 7 complexes, has been studied. The best results were obtained for tert-butyldimethylsilyloxyacetaldehyd...
Amidotriphosphate (0.1 M) in aqueous solution at near neutral pH in the presence of magnesium ions (0.25 M) converts glycolaldehyde (0.025 M) within days at room temperature into glycolaldehyde phosphate in (analytically) nearly quantitative yields (76% in isolated product). This robust phosphor...
Mass spectrometry of disaccharides in the negative-ion mode frequently generates product anions of m/z 221. With glucose-containing disaccharides, dissociation of isolated m/z 221 product ions in a Paul trap yielded mass spectra that easily differentiated between both anomeric configurations and...
Background: The management of cerebral arteriovenous malformations needs effective treatments. So far, no study has shown that partial targeted embolization treatment (PTET) reduces the risk of intracranial hemorrhage with respect to the natural history of the malformation. Methods: The pre-trea...
Hybrid acrylic/urethane colloidal dispersions were prepared by incorporation of a novel multifunctional urethane castor vinyl ether (UCVE) macromonomer derived from castor oil in acrylic latexes. Single-stage and two-stage semi-continuous emulsion polymerization processes were utilized to contro...
In this work, secondary reactions involved in the free radical polymerization of butyl acrylate are investigated using quantum chemistry. First, various backbiting reactions are studied by adopting a simplified molecular model suitable for treating long polymer chains. The predicted reaction kin...
Euro V diesel fuel blended with 8.1%, 16.4%, 25% and 33.8% by volume of diethyl adipate (DEA), corresponding to 3%, 6%, 9% and 12% by mass of oxygen in the blended fuels, were tested on a 4-cylinder direct-injection diesel engine. Experiments were conducted under five engine loads at a steady sp...
Liquid–liquid equilibrium (LLE) data of the solubility (binodal) curves and tie-line end compositions were examined for mixtures of {(water (1)+butyric acid (2)+diethyl succinate or diethyl glutarate or diethyl adipate (3)} at 298.2K and 101.3±0.7kPa. The relative mutual solubility of butyric ...
(Liquid+liquid) equilibrium (LLE) data of the solubility (binodal) curves and tie-line end compositions were examined for {water (1)+propionic acid (2)+diethyl succinate or diethyl glutarate or diethyl adipate (3)} at T=298.15K and 101.3±0.7kPa. The relative mutual solubility of the propionic a...
Castor oil is an attractive feedstock for the preparation of a variety of industrially important products due to the presence of ricinoleic acid with hydroxyl functionality up to 85–90%. Methyl ricinoleate was esterified with different dicarboxylic acids to prepare a series of a new class of es...
Trapping by adsorption on hydrophobic porous polymers was used to selectively remove γ-decalactone from the complex bioconversion medium. Several sorbents were tested : activated carbon, and three porous polystyrene-type polymers (Porapak Q, Chromosorb 105, and Resin SM4). The sorption isotherm...
Castor beans contain large quantities of oil and can grow in harsh environments. Unlike soybean oil, castor oil cannot be directly used for biodiesel production due to its extremely high viscosity. Here, we report an alternative source of biodiesel which possesses an ideal viscosity like soybean...
In order to study differences in γ-decalactone production in yeast, four species of Sporidiobolus were cultivated with 5% of methyl ricinoleate as the lactone substrate. In vivo studies showed different time courses of intermediates of ricinoleic acid breakdown between the four species. In vitr...
The enzymatic method for synthesising polyglycerol polyricinoleate (PGPR), a food additive named E-476, was successfully carried out in the presence of immobilised Rhizopus oryzae lipase in a solvent-free medium. The great advantage of using the commercial preparation of R. oryzae lipase is that...
Novel bio‐based and biodegradable electrospun membranes, containing bactericidal ricinoleic acid (RA) units either by copolymerization with butylene succinate (BS) units or by blending PRA and PBS homopolymers, are characterized in their chemical, thermal, mechanical and surface properties. In ...
Diethylene glycol monomethyl ether monolaurate (DGMEML) was synthesized via the reaction of diethylene glycol monomethyl ether (DGME) with methyl laurate (ML) by a new solid base catalyst of KF/CaO/AC, which was prepared by impregnation method using active carbon as carrier. The catalysts were c...
Pseudomonas sp. lipase PS was immobilized by adsorption and tested for its ability to catalyze the synthesis of citronellyl butyrate and geranyl caproate by transesterification in n-hexane. The reaction parameters investigated were: enzyme load, effect of substrate concentration, added water, te...
Lipases from Candida rugosa, Pseudomonas fluorescens and Rhizopus japonicus were employed in direct esterification of the different optical isomers of citronellol with butyric acid both with and without additional organic solvent. In systems with C. rugosa lipase and without addition of organic ...
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