Direct H2O2 synthesis over Pd membranes at elevated temperatures
文献类型：期刊论文
| 作者 | Shi, Lei; Goldbach, Andreas; Zeng, Gaofeng; Xu, Hengyong |
| 刊名 | journal of membrane science
 |
| 出版日期 | 2010-02-15 |
| 卷号 | 348期号:1-2页码:160-166 |
| 关键词 | Hydrogen peroxide Selective oxidation Membrane reactor Hydrogen permeation H2O2 decomposition |
| 产权排序 | 1;1 |
| 通讯作者 | 徐恒泳 |
| 英文摘要 | h2o2 was directly synthesized from the elements over supported i'd membranes in o-2-saturated, aqueous h2so4 (0.03 mol/l) between 303 and 348 k while feeding h-2 through the membrane. the h2o2 yield increased with temperature despite h2o2 selectivity declining simultaneously due to faster h2o2 decomposition. both h2o2 yield and selectivity improved with h-2 feed pressure, however. comparison of h-2 consumption during h2o2 synthesis with the intrinsic membrane h-2 permeability and the energetics of h-2 oxidation on pd surfaces revealed that the h2o2 productivity gain with temperature was primarily owed to the acceleration of reaction kinetics. the h2o2 selectivity enhancement with h-2 feed pressure is attributed to the inhibition of direct h2o formation as a result of hindered o-2 dissociation due to blocking of o atom adsorption sites on the membrane surface because of increasing occupation by h atoms. h2o2. decomposition and reduction on the pd membrane surface accelerate much faster with temperature than h2o2 formation and need to be suppressed in order to maximize h2o2 yield and h-2 utilization at higher temperatures. (c) 2009 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; technology ; physical sciences |
| 类目[WOS] | engineering, chemical ; polymer science |
| 研究领域[WOS] | engineering ; polymer science |
| 关键词[WOS] | hydrogen-peroxide synthesis ; palladium membranes ; catalytic membranes ; composite membrane ; pd/sio2 catalyst ; ab-initio ; o-2 ; h-2 ; pd(111) ; decomposition |
| 收录类别 | SCI |
| 原文出处 | false |
| 语种 | 英语 |
| WOS记录号 | WOS:000274765300020 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/102901]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | Chinese Acad Sci, Dalian Inst Chem Phys, Lab Appl Catalysis, Dalian 116023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Lei,Goldbach, Andreas,Zeng, Gaofeng,et al. Direct H2O2 synthesis over Pd membranes at elevated temperatures[J]. journal of membrane science,2010,348(1-2):160-166. |
| APA | Shi, Lei,Goldbach, Andreas,Zeng, Gaofeng,&Xu, Hengyong.(2010).Direct H2O2 synthesis over Pd membranes at elevated temperatures.journal of membrane science,348(1-2),160-166. |
| MLA | Shi, Lei,et al."Direct H2O2 synthesis over Pd membranes at elevated temperatures".journal of membrane science 348.1-2(2010):160-166. |
入库方式： OAI收割
来源：大连化学物理研究所
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