Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 931-40-8, is researched, SMILESS is O=C1OCC(CO)O1, Molecular C4H6O4Journal, Liaoning Huagong called Preparation of catalyst from natural eggshell waste and its application in the synthesis of glycerol carbonate, Author is Wang, Sun-bo; Wang, Song; Li, San-xi, the main research direction is transesterification catalyst eggshell glycerol dimethyl carbonate dioxolanone preparation.Safety of 4-(Hydroxymethyl)-1,3-dioxolan-2-one.
Eggshell is a kind of waste with huge production Its main component is calcium carbonate, which can be used as the source of base catalyst, calcium oxide. Turning egg shell waste into base catalyst can turn waste into useful material and is in line with the concept of green chem. In this paper, the catalyst was prepared from waste egg shell, and its application in the synthesis of glycerol carbonate was explored. The property of prepared catalyst was investigated by FTIR, XRD, SEM and EDS. The investigation results indicated that the catalyst prepared from waste eggshells through adding dolomite and talcum powder by calcined at 1250°C for 4 h showed high catalytic ability. The prepared catalyst can be used in the synthesis of glycerol carbonate and has good activity. The optimal conditions for the synthesis of glycerol carbonate were determined as follows: the catalyst amount 5% (wt), the molar ratio of DMC to glycerol 3:1, the reaction temperature 80°C and the reaction time 2 h. Under above conditions, glycerol conversion rate reached 94.67%. However, the stability of the catalyst in the transesterification reaction is poor.
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