Direct conversion of corn cob to formic and acetic acids over nano oxide catalysts

作者：Cheng Liyuan; Liu Hong; Cui Yuming; Xue Nianhua^*; Ding Weiping

来源：Journal of Energy Chemistry, 2014, 23(1): 43-49.

DOI：10.1016/S2095-4956(14)60116-9

• corn cob
• chemical conversion
• nano oxides
• biomass
• formic acid
• acetic acid

Considering energy shortage, large molecules in corn cob and easy separation of solid catalysts, nano oxides are used to transform corn cob into useful chemicals. Because of the microcrystals, nano oxides offer enough accessible sites for cellulose, hemicellulose and monosaccharide from corn cob hydrolysis and oxidant. Chemical conversion of corn cob to organic acids is investigated over nano ceria, alumina, titania and zirconia under various atmospheres. Liquid products are mainly formic and acetic acids. A small amount of other compounds, such as D-xylose, D-glucose, arabinose and xylitol are also detected simultaneously. The yield of organic acids reaches 25%-29% over the nano oxide of ceria, zirconia and alumina with 3 h reaction time under 453 K and 1.2 MPa O-2. The unique and fast conversion of corn cob is directly approached over the nano oxides. The results are comparative to those of biofermentation and offer an alternative method in chemically catalytic conversion of corn cob to useful chemicals in a one-pot chemical process.

• 出版日期2014-1
• 单位南京大学