SUSTAINABLE SYNTHESIS OF DIGLYCEROL FROM GLYCEROL VIA THE CALCIUM DIGLYCEROXIDE ROUTE
The modern chemical industry strives to optimize the conversion of abundant, low– value raw materials like glycerol, a by–product of biodiesel production, into high– value products. This study focuses on the synthesis of diglycerol using calcium diglyceroxide (CaDG) derived from calcium acetate (...
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| Format: | Theses |
| Language: | Indonesia |
| Online Access: | https://digilib.itb.ac.id/gdl/view/83322 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The modern chemical industry strives to optimize the conversion of abundant, low–
value raw materials like glycerol, a by–product of biodiesel production, into high–
value products. This study focuses on the synthesis of diglycerol using calcium
diglyceroxide (CaDG) derived from calcium acetate (Ca(CH3COO)2). This two–
step process involves first synthesizing CaDG and then using it to produce
diglycerol. The method also regenerates calcium acetate as a by–product, creating
an economical and environmentally friendly cycle. Utilizing glycerol in chemical
synthesis offers economic and environmental benefits. Diglycerol, often used as a
humectant, has applications in cosmetics, pharmaceuticals, the food industry, and
polymers.
The equilibrium constant (K) values were 1.06 at 60°C and 1.05 at 113°C for the
first reaction and 0.55 at 120°C and 0.76 at 140°C for the second reaction. XRD
analysis confirmed the formation of CaDG with characteristic peaks, while FT–IR
analysis of the diglycerol product showed the presence of unreacted anhydride.
Despite the promising methodology, the final product had an acidic odor, indicating
incomplete reactions. Further improvements are needed to optimize reaction
conditions and achieve complete conversion.
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