Title

Tuning product selectivity during CO₂ hydrogenation on Ru catalyst by metal-support interaction

DGIST Authors

Sungyeop Kim ; Chanyeon Kim ; Seunghyeon Kim

Advisor

김찬연

Co-Advisor(s)

Seunghyeon Kim

Issued Date

2026

Awarded Date

2026-02-01

Type

Thesis

Description

CO2 hydrogenation, Metal-Support Interaction, Ru-based catalyst, Light-assisted

Table Of Contents

Ⅰ. Introduction 1
1.1 Necessity of CO2 Mitigation and CO2 Conversion Technologies 1
1.2 Reaction Pathways and Thermodynamics of CO2 hydrogenation 4
1.3 Factors that affect the Product Selectivity in CO2 hydrogenation 7
1.3.1 Effect of Metal Properties 7
1.3.2 Support Effect and Metal-Support Interaction 8
1.4 Limitations of Previous Approaches 9
1.5 Strategies for This Work 10
Ⅱ. Experimental 11
2.1 Materials 11
2.2 Catalyst Synthesis 11
2.3 Catalyst Characterization 12
2.4 Catalyst Performance Tests 12
Ⅲ. Results and Discussion 14
3.1 Analysis of the Support Effect on Ru-based catalysts 14
3.1.1 Catalytic Performance over Different Supports 14
3.1.2 Catalyst Characterization over Different Supports 16
3.1.3 Adsorption Strength over Different Supports 21
3.1.4 In Situ Mass Spectrometry Analysis of Product Formation 23
3.2 Modulation of Ru Oxidation State 25
3.2.1 Catalyst Characterization of Ru with Mixed Supports 25
3.2.2 Catalytic Performance with Different Ru Oxidation States 31
3.2.3 Adsorption Strength with Different Ru Oxidation States 33
3.2.4 Light Enhancement of CO2 Conversion 33
3.2.5 Distinct Adsorption Modes of CO and CO2 42
Ⅳ. Conclusion 43
4. Conclusion 43
Reference 45

URI

https://scholar.dgist.ac.kr/handle/20.500.11750/59678
http://dgist.dcollection.net/common/orgView/200000946707

DOI

10.22677/THESIS.200000946707

Degree

Master

Department

Department of Energy Science and Engineering

Publisher

DGIST

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