H2O2 synthesis over PdAu membranes
文献类型：期刊论文
| 作者 | Shi, Lei; Goldbach, Andreas; Zeng, Gaofeng; Xu, Hengyong |
| 刊名 | catalysis today
 |
| 出版日期 | 2010-10-31 |
| 卷号 | 156期号:3-4页码:118-123 |
| 关键词 | Hydrogen peroxide Direct synthesis PdAu membrane Hydrogen permeation Membrane reactor |
| ISSN号 | 0920-5861 |
| 产权排序 | 1;1 |
| 通讯作者 | 哥德巴赫 |
| 英文摘要 | 2-3 mu m thick pdau membranes have been prepared by sequential electroless plating on porous ceramic tubes followed by annealing at 823 k under h-2. gas phase h-2 permeation rates had stabilized after 250 h annealing even though the alloy layers still remained inhomogeneous as evidenced by x-ray diffraction analyses after conclusion of all other experiments. the h-2 permeability of a pd90.5au9.5 membrane reached 1.2 x 10(-8) mol m(-1) s(-1) pa-0.5 at 673k. a marked discontinuity in the temperature dependence of the h-2 permeation rate at 573 k signals a change from diffusion to adsorption or desorption-limited h-2 transport through the membrane below that threshold. h2o2 was directly synthesized from the elements over these pdau membranes in o-2-saturated, acidic water/ethanol mixtures while feeding h-2 through the membrane. the h2o2 formation rate increased from 19.5 to 97.5 mmol m(-2) h(-1) between 277 and 363 k in water at 300 kpa h-2 feed pressure even though the h2o2 selectivity decreased from 56% to 30% in parallel. h2o2 yield and selectivity improved both with h-2 feed pressure, however. h2o2 formation rate and selectivity increased also moderately with ethanol content, but the pdau layer tended to delaminate from the ceramic support if the ethanol content was raised above 50%. (c) 2010 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences ; technology |
| 类目[WOS] | chemistry, applied ; chemistry, physical ; engineering, chemical |
| 研究领域[WOS] | chemistry ; engineering |
| 关键词[WOS] | hydrogen-peroxide synthesis ; gold-palladium alloys ; x-ray ; ab-initio ; h-2 ; o-2 ; au ; oxidation ; catalysts ; pd(111) |
| 收录类别 | SCI |
| 原文出处 | false |
| 语种 | 英语 |
| WOS记录号 | WOS:000284665800007 |
| 公开日期 | 2010-11-30 |
| 源URL | [http://159.226.238.44/handle/321008/103571]  |
| 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. H2O2 synthesis over PdAu membranes[J]. catalysis today,2010,156(3-4):118-123. |
| APA | Shi, Lei,Goldbach, Andreas,Zeng, Gaofeng,&Xu, Hengyong.(2010).H2O2 synthesis over PdAu membranes.catalysis today,156(3-4),118-123. |
| MLA | Shi, Lei,et al."H2O2 synthesis over PdAu membranes".catalysis today 156.3-4(2010):118-123. |
入库方式： OAI收割
来源：大连化学物理研究所
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