Influence of Carbon on Phase Transformation of Oxides in Carbon/Oxide Composites
文献类型：期刊论文
| 作者 | Guo Ying1; Wang Pei2; Yu Gang1; Wang Yu1; Zhu Yue-Xiang1; Xie You-Chang1 |
| 刊名 | ACTA PHYSICO-CHIMICA SINICA
 |
| 出版日期 | 2010-07-01 |
| 卷号 | 26期号:7页码:1887-1892 |
| 关键词 | Carbon Alumina Titania Phase Transformation Anatase Rutile |
| ISSN号 | 1000-6818 |
| DOI | 10.3866/PKU.WHXB20100712 |
| 英文摘要 | Carbon/alumina (titania) composites have unique physicochemical properties and have been widely used in adsorption and catalysis. Carbon in these composites greatly influences the sintering and phase transformation behavior of the oxides. Calcining carbon/gamma-Al2O3 in oxygen at high temperature results in a quick gamma- to alpha-Al2O3 transformation. In nitrogen, X. ray diffraction (XRD) analysis showed that carbon inhibited the phase transformation significantly. This inhibition effect was found to be carbon content dependent. For the carbon/titania system, pure titania and carbon. protected. titania samples were calcined at different temperatures and analyzed by XRD, transmission electron microscopy (TEM), and Raman spectroscopy. Surface area and pore size analysis was performed by isothermal nitrogen adsorption-desorption. Results show that the carbon layer can improve the thermal stability of the TiO2 nanoparticles and hinder the phase transformation of anatase to rutile at up to 800 degrees C under nitrogen. protected heat treatment. On the other hand, carbon can be removed by controlling calcination in oxygen at 500 degrees C without affecting the phase composition and texture of titania. The carbon removal efficiency was examined by temperature. programmed oxidation (TPO) analysis. Therefore, carbon can be used as a special surface modifier which can inhibit the high temperature phase transformation of oxides without introducing alien elements effectively. |
| 语种 | 英语 |
| WOS记录号 | WOS:000279776400023 |
| 出版者 | PEKING UNIV PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/70487]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhu Yue-Xiang |
| 作者单位 | 1.Peking Univ, Coll Chem & Mol Engn, State Key Lab Struct Chem Unstable & Stable Speci, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China 2.China Acad Engn, Inst Chem Mat, Mianyang 621900, Sichuan Prov, Peoples R China |
| 推荐引用方式 GB/T 7714 | Guo Ying,Wang Pei,Yu Gang,et al. Influence of Carbon on Phase Transformation of Oxides in Carbon/Oxide Composites[J]. ACTA PHYSICO-CHIMICA SINICA,2010,26(7):1887-1892. |
| APA | Guo Ying,Wang Pei,Yu Gang,Wang Yu,Zhu Yue-Xiang,&Xie You-Chang.(2010).Influence of Carbon on Phase Transformation of Oxides in Carbon/Oxide Composites.ACTA PHYSICO-CHIMICA SINICA,26(7),1887-1892. |
| MLA | Guo Ying,et al."Influence of Carbon on Phase Transformation of Oxides in Carbon/Oxide Composites".ACTA PHYSICO-CHIMICA SINICA 26.7(2010):1887-1892. |
入库方式： OAI收割
来源：化学研究所
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