文献类型：期刊文献

中文题名：吡啶改性Pd／SiO2催化剂用于H2和O2直接合成H2O2

英文题名：Pyridine modified Pd/SiO_2 catalyst for direct synthesis of H_2O_2

作者：笪国进[1];欧阳李科[1];徐晶[1];韩一帆[1]

机构：[1]华东理工大学,化学工程联合国家重点实验室,上海200237

年份：2013

卷号：64

期号：2

起止页码：561

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20131116114730);Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；

基金：化学工程联合国家重点实验室开放课题项目(SKL-ChE-10C05);国家自然科学基金项目(21176071,21106041);上海市浦江人才计划项目(2010/10PJ1402500,2011/11PJ1402400)~~

语种：中文

中文关键词：吡啶改性;钯催化剂;直接合成过氧化氢

外文关键词：pyridine modification; Pd catalyst; direct synthesis of hydrogen peroxide

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。
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 H2 02 formation.