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

fYear

2009

fDate

11-13 June 2009

Firstpage

1

Lastpage

4

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/ICBBE.2009.5162687

Filename

5162687