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Effect of preparation conditions of V2O5/TiO2 catalysts for selective catalytic reduction of NOx with NH3 : V2O5/TiO2 촉매 제조 조건이 NOx의 암모니아 선택적 촉매 환원 반응에 미치는 영향

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dc.contributor.advisor김도희-
dc.contributor.author윤승희-
dc.date.accessioned2017-07-17T08:45:30Z-
dc.date.available2017-07-17T08:45:30Z-
dc.date.issued2014-02-
dc.identifier.other000000018312-
dc.identifier.urihttps://hdl.handle.net/10371/127097-
dc.description학위논문 (석사)-- 서울대학교 대학원 : 화학생물공학부, 2014. 2. 김도희.-
dc.description.abstractInternational Maritime Organization (IMO) announced Tier Ⅲ taking effect from 2016 which regulates NOx emitted from vessels. Marine SCR catalyst requires higher DeNOx activity in the low temperature range comparing to automobile. In this study, I aimed at finding the optimum condition to prepare V2O5/TiO2 catalyst known as low temperature selective catalytic reduction catalysts by changing oxidation states in vanadium precursor solution. V2O5 catalysts supported by TiO2 (1, 3, 5 and 7 wt%) were prepared by applying wet impregnation method using three precursor solutions with different oxidation states (V3+, V4+ and V5+).
I utilized BET, ICP, XRD, Raman spectroscopy, UV-Vis DRS, H2 TPR and XPS to investigate the physicochemical properties of V2O5/TiO2 catalysts. Also, NH3-SCR reaction test was performed for these catalysts.
It was found that V2O5/TiO2 catalysts prepared from the precursor solution of V3+ oxidation state (VT(3+)) has good activity over wide temperature range and produces the lowest concentration of N2O during SCR reaction. The formation of highly coordinated polymeric vanadyl species on the sample attributes the high NOx conversion and low production of N2O of the VT(3+) catalyst.
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dc.description.tableofcontentsContents


Abstract 1

List of Tables 5
List of Figures 6

Chapter 1. Introduction 7
1.1. Background of selective catalytic reduction (SCR) 7
1.2. Objectives 11

Chapter 2. Experimental 13
2.1. Catalyst preparation 13
2.2. Catalyst characterization 15
2.2.1. BET 15
2.2.2. XRD 15
2.2.3. Raman spectrometer 15
2.2.4. H2 TPR 16
2.2.5. UV-Vis DRS 16
2.2.6. XPS 16
2.3. NH3-SCR activity test 18

Chapter 3. Results and Discussion 20
3.1. Catalysts preparation 20
3.2. Textural and structural properties 22
3.3. Raman spectroscopy 25
3.4. UV-Vis DRS 28
3.5. H2 TPR 30
3.6. XPS 34
3.7. NH3-SCR activity 38

Chapter 4. Conclusion 45

Reference 46
요약 (국문초록) 54
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dc.formatapplication/pdf-
dc.format.extent916288 bytes-
dc.format.mediumapplication/pdf-
dc.language.isoen-
dc.publisher서울대학교 대학원-
dc.subjectV2O5/TiO2-
dc.subjectOxidation state-
dc.subjectVanadium precursor-
dc.subjectDeNOx-
dc.subjectNH3-SCR-
dc.subject.ddc660-
dc.titleEffect of preparation conditions of V2O5/TiO2 catalysts for selective catalytic reduction of NOx with NH3-
dc.title.alternativeV2O5/TiO2 촉매 제조 조건이 NOx의 암모니아 선택적 촉매 환원 반응에 미치는 영향-
dc.typeThesis-
dc.description.degreeMaster-
dc.citation.pagesⅤⅩⅣ,54-
dc.contributor.affiliation공과대학 화학생물공학부-
dc.date.awarded2014-02-
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