On behalf of the Organizing Committee and Advisory Committee, we sincerely welcome you to participate in the Supergreen 2022, the 12^th International Conference on Supercritical Fluids organized by the Asian Society of Supercritical Fluids (ASSF), the Taiwan Supercritical Fluid Association (TSCFA) and the National Taipei University of Technology (Taipei Tech).

This conference aims to discuss the progress and application of supercritical fluid technologies. The following five topics will be covered during the conference: (1) Physicochemical properties and thermodynamics, (2) Natural products, pharmaceutical and biomedical applications, (3) Reactions, material design and nanotechnology, (4) Process intensification, CO₂ utilization and industrial applications and (5) Special session of applications of SCF technology in Taiwan. There are plenary and invited presentations, as well as oral and poster presentations. The Supergreen conference was originally scheduled to take place in Taiwan in 2021, but the conference was postponed to 2022 due to the COVID-19 pandemic. We believe this is an excellent opportunity to stimulate interactions and pioneering ideas between participants from worldwide areas.

The Supergreen conference was firstly initiated in 2001 by Professor C. M. Wai of the Department of Chemistry, the University of Idaho, USA. Previous conferences had been held in Suwon (Korea, 2002), Nagoya (Japan, 2003), Tianjing (China, 2004), Taipei (Taiwan, 2005), Seoul (Korea, 2007), Sendai (Japan, 2009), Beijing (China, 2011). Kaohsiung (Taiwan, 2013), Seoul (Korea, 2015), Nagoya (Japan, 2017) and Shaanxi (China, 2019). It is our great honor to host the Superrgeen 2022 at National Taipei University of Technology, located at Taipei in Taiwan.

We greatly appreciate your participation and contribution in this conference. We hope you enjoy the scientific presentations and discussions, also have a pleasant stay in Taiwan.

Sincerely yours,

The Organizing Chairs

Dar-Jen Hsieh

Taiwan Supercritical Fluid Association

Chie-Shaan Su

Department of Chemical Engineering and Biotechnology

National Taipei University of Technology

• Physicochemical properties and thermodynamics

• Natural products, pharmaceutical and biomedical applications

• Reactions, material design and nanotechnology

• Processes intensification, carbon dioxide utilization and industrial applications

• Special session: Applications of SCF technology in Taiwan