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Promotion of transition metal oxides on the NH3-SCR performance of ZrO2-CeO2 catalyst
Li, Weiman1,2,3; Liu, Haidi1,3; Chen, Yunfa1,3
2017-04-01
发表期刊FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
ISSN2095-2201
卷号11期号:2
摘要Chromium oxide and manganese oxide promoted ZrO2-CeO2 catalysts were prepared by a homogeneous precipitation method for the selective catalytic reduction of NOx with NH3. A series of characterization including X-ray diffraction (XRD), high-resolution transmission electron microscope (HR-TEM), Brunauer-Emmett-Teller (BET) surface area analysis, H-2 temperature-programmed reduction (H-2-TPR), and X-ray photoelectron spectroscopy (XPS) were used to evaluate the influence of the physicochemical properties on NH3-SCR activity. Cr-Zr-Ce and Mn-Zr-Ce catalysts are much more active than ZrO2-CeO2 binary oxide for the low temperature NH3-SCR, mainly because of the high specific surface area, more surface oxygen species, improved reducibility derived from synergistic effect among different elements. Mn-Zr-Ce catalyst exhibited high tolerance to SO2 and H2O. Cr-Zr-Ce mixed oxide exhibited> 80% NOx conversion at a wide temperature window of 100 degrees C-300 degrees C. In situ DRIFT studies showed that the addition of Cr is beneficial to the formation of Bronsted acid sites and prevents the formation of stable nitrate species because of the presence of Cr6+. The present mixed oxide can be a candidate for the low temperature abatement of NOx. (C) Higher Education Press and Springer-Verlag Berlin Heidelberg 2017
关键词Nh3-selective Catalytic Reduction Nox Low Temperature Cr-zr-ce
文章类型Article
WOS标题词Science & Technology ; Technology ; Life Sciences & Biomedicine
DOI10.1007/s11783-017-0914-x
收录类别SCI
语种英语
关键词[WOS]LOW-TEMPERATURE ; SUPERIOR CATALYST ; SCR CATALYSTS ; ACTIVE-SITES ; NITRIC-OXIDE ; REDUCTION ; NH3 ; NOX ; AMMONIA ; OXIDATION
WOS研究方向Engineering ; Environmental Sciences & Ecology
WOS类目Engineering, Environmental ; Environmental Sciences
项目资助者National Key Research and Development Plan(2016YFC0204103)
WOS记录号WOS:000400071800006
引用统计
被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/22823
专题多相复杂系统国家重点实验室
作者单位1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China
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Li, Weiman,Liu, Haidi,Chen, Yunfa. Promotion of transition metal oxides on the NH3-SCR performance of ZrO2-CeO2 catalyst[J]. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,2017,11(2).
APA Li, Weiman,Liu, Haidi,&Chen, Yunfa.(2017).Promotion of transition metal oxides on the NH3-SCR performance of ZrO2-CeO2 catalyst.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,11(2).
MLA Li, Weiman,et al."Promotion of transition metal oxides on the NH3-SCR performance of ZrO2-CeO2 catalyst".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 11.2(2017).
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