2015 : The Effect of Decomposition Time on Cellulose Degradation in Ionic Liquid/Acid with Pressurized CO2

Dr. Ir. Sumarno M.Eng.


Abstract

Cellulose material is the most abundant carbohydrate that has a simple polymer structure, but it forms ofcrystalline micro-fibrils lead it insoluble in various solvent and highly resistant for hydrolysis process. Thedegradation of cellulose into glucose will increase the raw material for production of ethanol, isopropanol orbutanol. The conversion into oligomer can be applied for pharmaceutical, food additives, etc. There are manytechnologies for conversion of cellulose such as degradation with ionic liquids, acid, enzymatic/fermentation, and hydrothermal. In this work, we studied cellulose decomposition by hydrothermal process, and a combinationwith ionic liquids. We used NaCl as a simple ionic liquid, oxalic acid as a catalyst, and CO2 as pressurizing gasin order to enhance the degradability of cellulose in water. Cellulose and NaCl/oxalic acid solution (20 gr L-1) was conducted under 70 bar of subcritical CO2 in …