| 光谱学与光谱分析 |
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| Studies on Carbonization of Saccharides by Using Aqueous Solution of Various Acids |
| ZHANG Xin1，2, HE An-qi2, KANG Ting-guo1*, XIA Jin-ming3, WENG Shi-fu2, XU Yi-zhuang2*, WU Jin-guang2 |
1. College of Pharmacy, Liaoning University of Traditional Chinese Medicine, Dalian 116600, China
2. College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
3. Shenyang Dootel Biopharmaceutical Research Center, Shenyang 110031, China |
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Abstract The authors tried to establish an approach to use acids to convert biomass into a fuel with higher carbon content and lower oxygen content in a zero-energy-consumption fashion. Considering that biomass is composed of monosaccharide, we used aqueous solutions of variation acids including hydrochloric acid, sulfuric acid and perchloric acid to treat 2-deoxy-ribose and fructose at ambient temperature and pressure. Black substances were produced after a period of time when 2-deoxy-ribose and fructose were mixed with aqueous solutions containing 8 mol·L-1 acids. The black substance was collected and characterized by using elemental analysis, Fourier transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS). Elemental analysis results indicate that the contents of carbon increases significantly in the black substances in comparison with 2-deoxy-ribose and fructose. Moreover, XPS results indicate that the content of oxygen in the black substance undergoes a significant decrease comparedwith pure 2-deoxy-ribose and fructose. In the XPS spectra, the 1s peaks of 2-deoxy-ribose, strong sub peak at 286.05 eV, which is assigned to carbon linked to oxygen directly, dominate in the C 1s peak envelop. After treatment by HClO4, the peak decreased dramatically. This result also supports the conclusion that the content of oxygen in mono-saccharide is significantly reduced after treatment by acids. In the FTIR spectra of the black substances, strong peaks can be observed around 1 600 cm-1, indicating that CC bond is formed in the product. The above results suggest that treatments with acids may be developed as a new zero-energy-consumption approach to convert biomass in a new fuel with improved energy output efficiency.
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Received: 2014-01-23
Accepted: 2014-04-04
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Corresponding Authors:
KANG Ting-guo, XU Yi-zhuang
E-mail: ktg@lntcm.edu.cn; xyz@pku.edu.cn
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