(2hd) Upcycling of Plastics and Bio-Polymers: Design of Catalysts and Reactions

Throughout my research career, I have dedicated myself to two distinct research themes: the development of zeolite-based heterogeneous catalysts for petroleum processing and the synthesis of renewable polymers. My journey began during my Ph.D. at the Korea Advanced Institute of Science and Technology (KAIST), where I focused on heterogeneous catalysis. As a senior research fellow at the Institute for Basic Science (IBS) in Korea, I furthered my exploration in this field. During my time in Korea, I achieved a significant breakthrough by developing novel Pt-rare earth metal intermetallic compound nanoparticle catalysts supported on mesoporous zeolites. These catalysts exhibited exceptional catalytic lifetimes and high propene selectivity in propane dehydrogenation. This work demonstrated the potential for efficient and sustainable processes in the petrochemical industry. Motivated by the desire to contribute to a more sustainable future, I expanded my research interests during my post-doctoral work at the University of Minnesota. I delved into renewable polymer chemistry, with a specific focus on leveraging cellulose as a versatile platform for developing functional polymeric materials. By harnessing the inherent properties of cellulose, I aimed to create innovative and environmentally friendly solutions.

Combining my expertise in heterogeneous catalysis and renewable polymer chemistry, I am now embarking on a new phase in my research career. My objective is to establish a groundbreaking line of inquiry focused on the upcycling of plastics and bio-polymers. I aim to develop new catalysts for sustainable and green depolymerization of petroleum-based plastics and bio-polymers, leading to the production of valuable renewable chemical building blocks. Moreover, I intend to leverage bio-polymers themselves to create higher-value materials through sustainable functionalization processes. I will contribute to the development of a circular economy, where waste materials are transformed into valuable resources.

In summary, my research journey has encompassed the development of zeolite-based catalysts for petroleum processing and the synthesis of renewable polymers using cellulose as a platform. Now, I am excited to embark on my independent research career, where I will focus on the upcycling of plastics and bio-polymers, employing innovative catalysts and sustainable functionalization strategies to transform waste materials into valuable resources.

Teaching Interests

Throughout my academic journey, I have consistently embraced the role of a tutor and mentor, starting from my undergraduate studies all the way to my post-doctoral experiences. Pursuing my B.S. degree in Chemistry at KAIST, I actively tutored high school students with the goal of preparing them for success in the Korea and International Chemistry Olympiads. This opportunity allowed me to teach general chemistry as well as fundamental concepts in organic, inorganic, and biological chemistry. I found great fulfillment in guiding these students toward achieving their goals. During my Ph.D. in Chemistry at KAIST, I served as a teaching assistant (TA) for General Chemistry Experiment and Physical Chemistry courses. Additionally, I was invited multiple times as a special lecturer to deliver lectures on the characterization of nanostructured materials for the graduate-level Physical Chemistry 3 course. Alongside my coursework and research, I provided mentoring to students at various stages of their education. As a mentor for a select group of high school students from the Korea Science Academy of KAIST in the Research and Education program, I guided them in conducting research on heterogeneous catalysis. This experience allowed me to nurture their scientific curiosity and foster their growth as young researchers. During my post-doctoral time at UMN, I continued my mentoring efforts as a mentor for the Research Experience at Undergraduates program organized by the Center for Sustainable Polymers. Here, I provided guidance and support to undergraduate students, helping them navigate the world of research. Furthermore, throughout my time as a senior graduate student and research fellow at IBS, I mentored numerous students in their research. Although my academic degrees are in Chemistry rather than Chemical Engineering, I have been actively engaged in research areas closely aligned with chemical engineering throughout my career. I possess a deep understanding of heterogeneous catalysis, inorganic nanomaterial characterization, and polymer chemistry, enabling me to offer specialized lectures in these areas alongside fundamental chemical engineering topics. My teaching philosophy centers around encouraging and fostering the fundamental capabilities of engineers, empowering them to contribute to the advancement of sustainable and environmentally friendly processes. As I look forward to my future role as a faculty member, I am incredibly enthusiastic about leveraging my extensive experience and expertise in teaching and education. I am eager to share my knowledge, mentor students, and contribute to the development of a new generation of engineers dedicated to creating sustainable solutions.

Selected Publications

1. Ryong Ryoo*, Jaeheon Kim, et al., Rare-earth–platinum alloy nanoparticles in mesoporous zeolite for catalysis, Nature 585, 221-224 (2020).

2. Jaeheon Kim, Seung Won Han, Jeong-Chul Kim, Ryong Ryoo*, Supporting nickel to replace platinum on zeolite nanosponges for catalytic hydroisomerization of n-dodecane, ACS Catal. 8, 10545-10554 (2018).

3. Jaeheon Kim, Joonsoo Chun and Ryong Ryoo*, MFI zeolite nanosheets with post-synthetic Ti grafting for catalytic epoxidation of bulky olefins using H₂O₂, Chem. Commun. 51, 13102-13105 (2015).