The extractive distillation of a methanol and dimethyl carbonate (DMC) azeotrope system was taken as an example, the simulation optimization conventional process (CEP) dividing wall column (EDWC) were carried out by Aspen Plus software. In order to meet requirements separation, lower energy consumption investment cost obtained using univariate analysis optimal operating parameters EDWC. couplin...

Glycerol carbonate (GC) was synthesized by transesterification of glycerol with dimethyl (DMC) using calcium oxide (CaO) derived from eggshell as a catalyst. The best results 96% conversion and 94% GC yield were achieved under the following reaction conditions: 0.08 mole ratio CaO to glycerol, 1:2.5 DMC, 60°C temperature, 3 hours time. As expected, showed deteriorated catalytic performance when...

The process and energy intensifications for the synthesis of glycerol carbonate (GC) from dimethyl (DMC) using an eggshell-derived CaO heterogeneous catalyst were investigated. transesterification reaction between DMC was typically limited by mass transfer because immiscible nature reactants. By varying stirring speed, it observed that limitation could be neglected at 800 rpm. presence solid ma...

It is well known that when propylene carbonate (PC) is used as the primary solvent with common inorganic salts like LiPF6 there is essentially continuous electrolyte reduction with a graphite electrode at ca. 0.9 V vs. Li/Li, accompanied by gassing and graphite exfoliation. However, co-intercalation and subsequent reduction occurs only with PC and not the chemically closely related solvent ethy...

An oxidative ring opening reaction of the central ring C in the alkaloid Luotonin A and two of its derivatives was found to occur upon heating with an excess amine and potassium carbonate in dimethylsulfoxide (DMSO) solution in the presence of air oxygen. The structure of the novel amide-type products was elucidated and a possible mechanism for this reaction is proposed. Four of the new compoun...

This paper describes a modified method of preparation of a number of alpha-aryl-alpha-(pyridazin-3-yl)-acetonitriles via the C-arylation reaction of the corresponding carbanionsof phenylacetonitriles using 3-chloropyridazine derivatives. KOH and DMSO were used inthe deprotonation process, which made the reaction very simple and safe to perform.Nitriles were obtained in the hydrolysis reaction t...

The lithium (Li) metal anode suffers severe interfacial instability from its high reactivity toward liquid electrolytes, especially carbonate-based electrolytes, resulting in poor electrochemical performance of batteries that use 4 V high-capacity cathodes. We report a new skin-grafting strategy that stabilizes the Li metal-liquid electrolyte interface by coating the Li metal surface with poly(...