Seminars/Workshops/Conferences/Short-Term Courses Organized/Session Chaired

• Going to Chair ACS 2023
• Sustainable Biodegradable Plastic Packaging to Mitigate Single Use Plastic (SUP) Packaging Challenges” to be held on 30/01/2023 at The Imperial Hotel, Janpath, New Delhi
• Delivered a talk on Recent Development in Sustainable Polymers and its Applications in Food Packaging, NIFTEM Thanjavur, 8th January, 2023.
• Convenor, Taiwan-India 2022 Exchange Workshop and Symposium (TIEWS-2022), September 4-6, 2022, IIT Guwahati.
• Convenor, North-East Research Conclave, Sustainable Science and Technology, May 20-22, 2022, IIT Guwahati. (A first-time mega event in the North-East States on such a massive scale, the recorded participant count was around 10,000+)
• Interantional committee chair on 1st International Conference on Pollution Prevention and Clean Technologies (ICPPCT) & Taiwan-India in Emerging Environment and Energy Challenges of Technology Exchange, December 6th – 7th, 2021 in Chennai, India.
• Symposium Chair, International Symposium on Sustainable Polymers, August 23-25, 2019, IIT Guwahati (https://event.iitg.ac.in/spsine/).
• Dr. Vimal Katiyar Chaired a Session during NRC-2017 & ICEP 2018 February 23-25, 2018, Guwahati.
• Dr. Vimal Katiyar Chaired a Session on Biopolymers from Renewable Resources during 7^th World Congress on Biopolymers and Polymer Chemistry, June 04-06, 2018, Osaka, Japan. 
• Coordinator(India), 2nd Indo-Japan Bilateral Symposium on Future Perpective of Bioresource Utilization in North-East India IJBS 17, organized by IITG and GIFU University, Japan held at IIT Guwahati during 1-4 February, 2018 (http://www.iitg.ac.in/ijbs2017/).
• Coordinator(India), IITG-KIT 3rd Joint Symposium on Biobased Materials, IIT Guwahati, January 12, 2018.
• Organizing Chair, Fourth International Symposium in Advances in Sustainable Polymers ASP 17, organized by CoE-SusPol, Dept. of Chemical Engg., IITG and PPA, held at IIT Guwahati during January 8-11, 2018 (http://www.iitg.ac.in/asp17/).
• Dr. Vimal Katiyar Chaired a Session during International Conference on Functional Materials, organized by Material Science Centre, IIT Kharagpur, December 12-14, 2016.
• Executive Chair, ASP-16, August 4-6, 2016, organized by Kyoto Institute of Technology Kyoto, Japan (https://www.kit.ac.jp/en/2016/08/indian_seminar/).
• Indian Coordinator for KIT (Japan)-IITG Joint Symposium, August 3, 2016, Kyoto Japan.
• Coordinator, in Gifu-U/IITG & Gifu-U/UKM Joint Symposium on August 1, 2016, GIFU, Japan (https://www.gifu-u.ac.jp/en/news/news/2016/08/entry26-4198.html)
• Joint Organizing Secretary  of 68^th Session of Indian Institute of Chemical Engineers ‘CHEMCON 2015’ during December 27-30, 2015 at IIT Guwahati.
• Second Symposium in Sustainable Polymers (ASP-15), Guwahati, January 21 – 22, 2015 (http://www.iitg.ac.in/coesuspol/asp15/index.html).
• IITG-KIT Joint Symposium on Biobased Materials, Jan. 20, 2015. 
• First In-house Symposium on Technical Progress of Centre of Excellence for Sustainable Polymer (CoE-SusPol), Nov. 20, 2014. 
• National Workshop on Molecular Modelling and Simulation of Sustainable Polymers and Nanocomposites (MSSP-14), Aug. 4-8, 2014.
• National School on Sustainable Polymers and First Symposium in Sustainable Polymers (ASP-14), Guwahati, January 6 – 11, 2014