Structural and Chemical Promoters for In2O3-Catalyzed CO2 Hydrogenation to Methanol
Liang Liu defended his PhD thesis at the Department of Chemical Engineering and Chemistry on April 3th.
Did you know that carbon dioxide, often considered a waste product, can be transformed into valuable methanol using eco-friendly hydrogen? This groundbreaking process offers a promising solution to recycle CO2 and create essential chemicals and fuels for various industries. However, the catalysts involved face challenges like low activity and rapid deactivation. In this exciting research journey, we delve into the world of catalysts, particularly focusing on In2O3, a highly selective catalyst for methanol synthesis. By adding promoters like Pt, Pd, Ni, and Zr, we aim to enhance the catalyst's performance and stability. But the real magic lies in understanding the precise roles of these promoters and overcoming the sintering of In-oxide.
Through innovative catalyst preparation methods, including flame spray pyrolysis and impregnation, we explore different promoter configurations to unlock the full potential of methanol synthesis. By combining advanced spectroscopic techniques with well-defined catalyst synthesis, we shed light on the mysteries behind promoter roles in methanol production. In Chapter 2, we unravel the promoting role of Al in In2O3 for CO2 hydrogenation to methanol, investigating its effects on catalyst structure and activity. Chapter 3 delves into the promoting properties of Cr in In2O3-CrOx catalysts, showcasing the power of experimental analysis and density functional theory calculations. Chapter 4 explores the intriguing world of metal-support interactions in methanol synthesis, comparing the effectiveness of Fe, Co, Ni, and Cu as base metal promoters. Chapter 5 unveils the synergistic effects of Ni and ZrO2 in enhancing methanol rates, offering insights into the catalytic mechanism and reaction intermediates.
As we journey through these chapters, we unlock the secrets of methanol synthesis, paving the way for a more sustainable future. Our findings not only expand the frontiers of scientific knowledge but also hold immense potential to revolutionize industries and mitigate environmental challenges.
Title of PhD thesis: Structural and Chemical Promoters for In2O3-Catalyzed CO2 Hydrogenation to Methanol . Supervisors: Emiel Hensen and Nicolay Kosinov.