Interface effect of mixed phase Pt/ZrO2 catalysts for HCHO oxidation at ambient temperature
文献类型：期刊论文
| 作者 | Yang, Xueqin1,2; Yu, Xiaolin1; Lin, Mengya1,2; Ge, Maofa1,2,3; Zhao, Yao4; Wang, Fuyi2,4 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY A
 |
| 出版日期 | 2017-07-14 |
| 卷号 | 5期号:26页码:13799-13806 |
| 英文摘要 | A series of high-efficiency Pt/ZrO2 catalysts were successfully prepared by simple methods on the basis of a ZrO2 support with a mixed monoclinic/tetragonal phase structure. The activity test results showed that the mixed phase catalysts exhibited higher catalytic activity than the pure monoclinic phase, and HCHO can be completely oxidized into CO2 and H2O at near ambient temperature. XRD, Raman and HRTEM results demonstrated that the monoclinic-tetragonal phase interface with abundant defects was formed due to the introduction of the tetragonal phase. According to the results of TEM, XPS and H-2-TPR, the mixed phase interfacial structure can induce the formation of the active oxygen species, ionic Pt delta+ species, strong metal-support interaction and low-temperature reducibility, which was vital for the significant improvement of the catalytic activity. Furthermore, the specific HCHO reaction rate of the catalysts at 55 degrees C increased from 0.8 x 10(-3) to 10.4 x 10(-3) mmol h(-1) m(-2) and the activation energy decreased remarkably from 213.5 to 24.7 kJ mol(-1) with the increase of the biphase interface content. In situ DRIFTS spectra showed that the special interfacial structure can change the reaction pathway of HCHO oxidation and inhibit the formation of inert carbonate species, thus greatly enhancing the HCHO oxidation activity. |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/39008]  |
| 专题 | 化学研究所_分子动态与稳态结构实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Chem, CAS Res Educ Ctr Excellence Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Reg Atmospher Environm, Xiamen 361021, Peoples R China 4.Chinese Acad Sci, Inst Chem, Key Lab Analyt Chem Living Biosyst, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Xueqin,Yu, Xiaolin,Lin, Mengya,et al. Interface effect of mixed phase Pt/ZrO2 catalysts for HCHO oxidation at ambient temperature[J]. JOURNAL OF MATERIALS CHEMISTRY A,2017,5(26):13799-13806. |
| APA | Yang, Xueqin,Yu, Xiaolin,Lin, Mengya,Ge, Maofa,Zhao, Yao,&Wang, Fuyi.(2017).Interface effect of mixed phase Pt/ZrO2 catalysts for HCHO oxidation at ambient temperature.JOURNAL OF MATERIALS CHEMISTRY A,5(26),13799-13806. |
| MLA | Yang, Xueqin,et al."Interface effect of mixed phase Pt/ZrO2 catalysts for HCHO oxidation at ambient temperature".JOURNAL OF MATERIALS CHEMISTRY A 5.26(2017):13799-13806. |
入库方式： OAI收割
来源：化学研究所
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