| 吡啶改性Pd/SiO2催化剂用于H2和O2直接合成H2O2 |
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| 引用本文： | 笪国进,欧阳李科,徐晶,韩一帆. 吡啶改性Pd/SiO2催化剂用于H2和O2直接合成H2O2[J]. 化工学报, 2013, 64(2): 561-567. DOI: 10.3969/j.issn.0438-1157.2013.02.021 |
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| 作者姓名： | 笪国进 欧阳李科 徐晶 韩一帆 |
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| 作者单位： | 华东理工大学,化学工程联合国家重点实验室,上海 200237 |
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| 基金项目： | 化学工程联合国家重点实验室开放课题项目，国家自然科学基金项目，上海市浦江人才计划项目 |
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| 摘 要： | 引言过氧化氢(H2O2)是一种理想的绿色氧化剂,广泛应用于化学品合成、纺织、造纸、环保、食品、医药、冶金和农业等领域[1]。目前,蒽醌法[2-5]是工业上生产H2O2的主要方法。20世纪40年代,德国I.G.Farbenindustrie首先采用蒽醌法(又称Riedl-Pfleiderer法)工业化生产过氧化氢。该方法首先将2-烷基蒽醌(通常是2-乙基蒽醌)溶解于合适的有机溶剂中,溶液中的2-烷基蒽醌经催化剂催化加氢,被还原成蒽氢醌或5,6,7,8-四氢蒽氢醌,再经空气氧化得到蒽醌或四氢蒽醌和
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| 关 键 词： | 吡啶改性 钯催化剂 直接合成过氧化氢 |
| 收稿时间： | 2012-07-25 |
| 修稿时间： | 2012-09-13 |
Pyridine modified Pd/SiO2 catalyst for direct synthesis of H2O2 |
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| DA Guojin , OUYANG Like , XU Jing , HAN Yifan. Pyridine modified Pd/SiO2 catalyst for direct synthesis of H2O2[J]. Journal of Chemical Industry and Engineering(China), 2013, 64(2): 561-567. DOI: 10.3969/j.issn.0438-1157.2013.02.021 |
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| Authors: | DA Guojin OUYANG Like XU Jing HAN Yifan |
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| Affiliation: | State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, China |
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| Abstract: | Direct synthesis of H2O2 from H2 and O2 is a green process as compared to the conventional anthraquinone oxidation route.In this study, Pd/SiO2 catalysts modified with pyridine were prepared for direct synthesis of H2O2.Comparing to Pd/SiO2 catalyst, performance of pyridine modified Pd/SiO2 for H2O2 formation was enhanced remarkably, and productivity of H2O2 increased by a factor of 3.For pyridine modified Pd/SiO2 catalyst, the rate of H2O2 formation reached a maximum when the ratio of hydrogen to oxygen was 1:2.The structure of pyridine modified Pd/SiO2 catalyst was characterized by using X-ray diffraction (XRD) and diffuses reflection infrared Fourier Transform spectra(DRIFTS).The changes in DRIFTS spectra indicated that Pd surface structure was significantly altered by pyridine, favoring H2O2 formation. |
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| Keywords: | pyridine modification Pd catalyst direct synthesis of hydrogen peroxide |
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