| 煤的液相光催化氧化研究 |
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| 引用本文： | 孙鸣,周安宁,么秋香.煤的液相光催化氧化研究[J].煤炭学报,2010,35(9):1553-1558. |
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| 作者姓名： | 孙鸣 周安宁 么秋香 |
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| 作者单位： | 1. 西北大学;
2. 西安科技大学化学与化工系;
3. 西安科技大学 |
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| 摘 要： | 在浆态流化床光反应器中，研究了时间、气氛和紫外光照射对光氧化煤样腐植酸产率和组成分布的影响。利用元素分析、UV-vis吸收光谱、FTIR和GC-MS分析了光氧化煤在液相氧化前后得到的腐植酸结构的变化。结果表明：在有氧和紫外光照射条件下，光-热氧化煤的腐植酸提取率最大，达96%。有氧和紫外光条件下有利于羟基自由基的生成；水可溶氧化产物数量减少，尤其是饱和烃类化合物。液相光催化氧化提高了液相氧化产物的选择性，这一结果与气相光催化氧化相一致。
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| 关 键 词： | 煤 光氧化 腐植酸 |
| 收稿时间： | 2010-04-27 |
| 修稿时间： | 2010-06-21 |
Photocatalysis oxidating of coal in liquid phase |
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| Abstract: | Effects of reaction time,atmosphere and UV on the yield and composition of humic acid from phtoto oxidation coal were studied in Slurry Fluidized Bed Photo reactor.The structures of humic acid before and after liquid phase oxidation were characterized by elemental analysis,UV vis absorption spectrometry,FTIR and GC/MS.The results show that oxygen and UV are beneficial to generate hydroxyl radicals and lead to the maximum yield of humic acid up to 9.6%.Water soluble oxidation products decrease,especially for saturated hydrocarbons.Liquid phase photocatalytic oxidation improves the selectivity of liquid oxidation products,which is consistent with the result of gas phase photocatalytic oxidation. |
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| Keywords: | coal photo oxidation humic acid |
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