| 刘春秀,王奖,萨嘎拉,冯孟杰,程晓丹,贾美林.金催化剂上乙二醛氧气氧化合成乙醛酸的研究[J].分子催化,2012,(4):322-327 |
| 金催化剂上乙二醛氧气氧化合成乙醛酸的研究 |
| The Research of Oxidation of Glyoxal to Glyoxylic Acid |
| 投稿时间：2012-05-28 修订日期：2012-07-16 |
| DOI： |
| 中文关键词: 金催化剂，乙二醛，乙醛酸 |
| 英文关键词:Gold catalyst glyoxal glyoxalic acid |
| 基金项目:内蒙古自治区自然科学基金重点项目(2010ZD03)，开放课题（2010KF02）和内蒙古师范大学“十百千”项目 |
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| 中文摘要: |
| 利用沉积-沉淀法和溶液相还原法制备了系列金催化剂，以氧气氧化乙二醛合成乙醛酸为探针反应，进行了反应条件的优化，并通过对催化剂进行XRD、AAS、UV-Vis和XPS表征，分析了影响催化剂活性的因素。结果显示：与沉积-沉淀法相比，采用溶液相还原法制备的催化剂Au/ZrO2（L），金的实际负载量较高，表现出较高的催化活性，当溶液pH为7.7，反应温度为323 K时，乙醛酸收率达到6.2%。 |
| 英文摘要: |
| A series of gold catalysts were prepared by deposition-precipitation method and solution reduction method respectively. The catalytic oxidation of glyoxal to glyoxylic acid in the presence of O2 was taken as the probe reaction for comparing the catalyst activity. The influence of reaction conditions on the catalytic activity was investigated. These catalysts were characterized by X-ray diffraction, AAS, UV-Vis spectrum and XPS. The results demonstrated that the catalyst Au/ZrO2(L) prepared by solution reduction method showed higher activity than that from deposition-precipitation method, with the 6.2% glyoxalic acid yield at the pH of 7.7 and reaction temperature of 323 K. The high activity of Au/ZrO2(L) might be resulted from the high actual gold loading and the existence of Au0. |
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