Influence of Pd precursors on the catalytic performance of Pd-H4SiW12O40/SiO2 in the direct oxidation of ethylene to acetic acid
文献类型：期刊论文
| 作者 | Xu, Shuliang1,2; Wang, Lixia1,2; Chu, Wenling1; Yang, Weishen1 |
| 刊名 | journal of molecular catalysis a-chemical
 |
| 出版日期 | 2009-09-01 |
| 卷号 | 310期号:1-2页码:138-143 |
| 关键词 | Ethylene oxidation Acetic acid Pd-SiW12/SiO2 Pd dispersion |
| 英文摘要 | the effects of palladium precursors (pdcl2, (nh4)(2)pdcl4, pd(nh3)(2)cl-2, pd(no3)(2) and pd(ch3coo)(2)) on the catalytic properties in the selective oxidation of ethylene to acetic acid have been investigated for 1.0wt% pd-30wt% h4siw12o40/sio2. the structures of the catalysts were characterized using x-ray diffraction, n-2 adsorption, h-2-pulse chemical adsorption, infrared spectrometry of the adsorbed pyridine, h-2 temperature-programmed reduction and x-ray photoelectron spectroscopy. the present study demonstrates that the different palladium precursors can lead to the significant changes in the dispersion of palladium. it is found that pd dispersion decreases as follows: pdcl2>(nh4)(2)pdcl4>pd(no3)(2)>pd(nh3)(2)cl-2>pd(c2h3o2)(2), which is nearly identical to the catalytic activity. this indicates that the dispersion of palladium plays an important role in the catalytic activity. furthermore, density of lewis (l) and bronsted (b) acid sites are also strongly dependent on the palladium precursors. it is also demonstrated that an effective catalyst should possess a well combination of bronsted acid sites with dispersion of palladium. (c) 2009 elsevier b.v. all rights reserved. |
| WOS标题词 | science & technology ; physical sciences |
| 类目[WOS] | chemistry, physical |
| 研究领域[WOS] | chemistry |
| 关键词[WOS] | selective oxidation ; skeletal isomerization ; vapor-phase ; n-heptane ; palladium ; ethene ; conversion ; zirconia ; hydrogen |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000269426900017 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/141471]  |
| 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 | 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Shuliang,Wang, Lixia,Chu, Wenling,et al. Influence of Pd precursors on the catalytic performance of Pd-H4SiW12O40/SiO2 in the direct oxidation of ethylene to acetic acid[J]. journal of molecular catalysis a-chemical,2009,310(1-2):138-143. |
| APA | Xu, Shuliang,Wang, Lixia,Chu, Wenling,&Yang, Weishen.(2009).Influence of Pd precursors on the catalytic performance of Pd-H4SiW12O40/SiO2 in the direct oxidation of ethylene to acetic acid.journal of molecular catalysis a-chemical,310(1-2),138-143. |
| MLA | Xu, Shuliang,et al."Influence of Pd precursors on the catalytic performance of Pd-H4SiW12O40/SiO2 in the direct oxidation of ethylene to acetic acid".journal of molecular catalysis a-chemical 310.1-2(2009):138-143. |
入库方式： OAI收割
来源：大连化学物理研究所
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