Hydrolysis of cellulose to produce bio-ethanol via ionic liquid catalysis

摘要

As the industry evolves rapidly, the cost of fossil fuel is yearly increasing. Sooner or later, the fossil will be exhausted. Renewable energy has become a hot topic. Nowadays, there are many kinds of hydrolysis of cellulose to produce bio-ethanol, including concentrated-acid hydrolysis, dilute-acid hydrolysis, hydrolase, and so on. In this research, ionic liquids (ILs) were used for catalyst for the hydrolysis of cellulose. Bio-ethanol was obtained via filtering and distilling to manufacture the bio-ethanol. It is vital to explore the rate of producing the glucose because it will impact have an on producing bio-efhanol directly. A water bath was used to raise the temperature and, in turn, to compare the influence on the temperature and time for cellulose hydrolysis. The glucose concentration can be acquired by 3,5-dinitrosalicylic acid. On the other hand, recycled ILs were explored for thermal analysis by differential scanning calorimetry (DSC), thermogravimetric analyzer (TG), and thermal activity monitor (TAM III). In addition, using Fourier infrared spectrometer (FTIR) we examined the characterization of the recycled ILs' functional groups. The purpose was to find the optional condition of the cellulose hydrolysis, and the cellulose hydrolysis rate for the ILs that was used as a catalyst.