Revealing the Synergistic Effects of Rh and Substituted La2B2O7 (B = Zr or Ti) for Preserving the Reactivity of Catalyst in Dry Reforming of Methane
文献类型：期刊论文
| 作者 | Wu, J; Qiao, LY; Zhou, ZF; Cui, GJ; Zong, SS; Xu, DJ; Ye, RP; Chen, RP; Si, R; Yao, YG |
| 刊名 | ACS CATALYSIS
 |
| 出版日期 | 2019 |
| 卷号 | 9期号:2页码:932—945 |
| 关键词 | PYROCHLORE OXIDE CATALYSTS SINGLE-ATOM CATALYST WATER-GAS SHIFT PARTIAL OXIDATION CHEMICAL CONVERSION CO2 REDUCTION NI CATALYSTS TEMPERATURE RHODIUM LA2TI2O7 |
| ISSN号 | 2155-5435 |
| DOI | 10.1021/acscatal.8b03319 |
| 文献子类 | 期刊论文 |
| 英文摘要 | Rh substituted-La2B2O7 (B = Zr or Ti) composite oxides were synthesized and applied in the dry reforming of methane (DRM) reaction. The characterizations of XRD, Raman, UV-vis diffuse reflectance, HRTEM, HAADF-STEM, in situ DRIFTS, XAFS XPS, TPR and the tests of DRM reaction have shown that the degree of substitution and the catalytic performance depend on the composition of La2B2O7 (B = Zr or Ti). It is found that almost all Rh species substituted Zr over the compact Rh-LZO while a part of Rh substituted Ti, and the rest existed in the form of Rh2O3 on the surface over the loose Rh-LTO. CH4 was prone to dissociate on Rh-La2Zr2O7 but hard to continue owing to the quickly depositing of intermediate carbon, which would not be resolved unless enough active O* was furnished. On the other hand, titanium-doped La2Ti2O7 conferred unique structural and charge effects to supported Rh through the metal support interface, leading to the coexistence of Rh-0 and Rh delta+ which performed synergistically during DRM at 800 degrees C. We proposed that CH4 would be activated on Rh sites continuously if generated carbon could be promptly oxidized by active O* species that originated from CO2 dissociation. The coexistence of Rh-0 and Rh delta+ in Rh-La2Ti2O7 facilitated the electron transfer and thus accelerated the mobility of active oxygen species, which could be proved by the variations of binding energy in Ti, O, and Rh. |
| 语种 | 英语 |
| 源URL | [http://ir.sinap.ac.cn/handle/331007/31802]  |
| 专题 | 上海应用物理研究所_中科院上海应用物理研究所2011-2017年 |
| 作者单位 | 1.Chinese Acad Sci, Fujian Inst Res Struct Matter, Key Lab Coal Ethylene Glycol & Its Related Techno, Fuzhou 350002, Fujian, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, J,Qiao, LY,Zhou, ZF,et al. Revealing the Synergistic Effects of Rh and Substituted La2B2O7 (B = Zr or Ti) for Preserving the Reactivity of Catalyst in Dry Reforming of Methane[J]. ACS CATALYSIS,2019,9(2):932—945. |
| APA | Wu, J.,Qiao, LY.,Zhou, ZF.,Cui, GJ.,Zong, SS.,...&Yao, YG.(2019).Revealing the Synergistic Effects of Rh and Substituted La2B2O7 (B = Zr or Ti) for Preserving the Reactivity of Catalyst in Dry Reforming of Methane.ACS CATALYSIS,9(2),932—945. |
| MLA | Wu, J,et al."Revealing the Synergistic Effects of Rh and Substituted La2B2O7 (B = Zr or Ti) for Preserving the Reactivity of Catalyst in Dry Reforming of Methane".ACS CATALYSIS 9.2(2019):932—945. |
入库方式： OAI收割
来源：上海应用物理研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。