Title :
Effect of Base Catalysts on Hydrothermal Conversion of Glycerin
Author :
Shen, Zheng ; Jin, Fangming ; Zhang, Yalei ; Kishita, Ashushi ; Tohji, Kazuyuki
Author_Institution :
Coll. of Environ. Sci. & Eng., Tongji Univ., Shanghai, China
Abstract :
Hydrothermal treatment of glycerin was carried out at 300degC by using eight base catalysts, including hydroxides of alkali metals, alkaline-earth metals and aluminum. All selected catalysts promoted the conversion of glycerin into lactic acid, except for Al(OH)3. The alkali-metal hydroxides were found to be more effective than alkaline-earth-metal hydroxides on hydrothermal conversion of glycerin. In the case of NaOH or KOH, a lactic acid yield of approximate 90% can be approached. Moreover, KOH was superior to NaOH on promoting the hydrothermal conversion of glycerin. Ba(OH)2 and Sr(OH)2 was found to convert glycerin further into formic and acetic acids. A decomposition mechanism of lactic acid with Ba(OH)2 was proposed.
Keywords :
biofuel; catalysts; Ba(OH)2; KOH; NaOH; Sr(OH)2; base catalyst; glycerin; hydrothermal conversion; hydrothermal treatment; lactic acid yield; Aluminum; Biofuels; Chemical industry; Detectors; Educational institutions; Fossil fuels; Inductors; Nitrogen; Steel; Temperature;
Conference_Titel :
Bioinformatics and Biomedical Engineering , 2009. ICBBE 2009. 3rd International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-2901-1
Electronic_ISBN :
978-1-4244-2902-8
DOI :
10.1109/ICBBE.2009.5162687
