Gas Hydrate

Gas hydrate formation, inhibition & recovery.

Carbon Dioxide Capture

Carbon Dioxide Capture, Storage & Utilization

Water Purification & Treatment

Water Purification & Treatment.


Process Development & scale-up of chemicals.





 Welcome to Rajnish's Research Group @ IIT Madras!


              Rajnish Kumar is a professor in the Department of Chemical Engineering at the Indian Institute of Technology - Madras. In 2018, he was recognized as Highly Cited Researcher in Engineering.  He is also a recipient of the NASI-SCOPUS Young Scientist Award for the year 2016. He has more than 10 years of experience in research and teaching with H-index=43, and i10-index=92 with total citations (>8100) on Google Scholar. His research interests are in the areas of unconventional energy resources including natural gas hydrates. The role of additives in gas hydrate inhibition and growth and their application in methane recovery from marine gas hydrates, flow assurance, hydrate-based gas separation process, and methane storage and transportation are some of the projects in which the group is actively working. His research group has published close to 140 research articles, book chapters, and patents and has delivered multiple invited talks at international and national conferences/ institutes. In the year 2020, he received the Dr. YBG Varma award for Teaching Excellence in Chemical Engineering. He is a Fellow of the Royal Society of Chemistry [FRSC] in London UK. He could be contacted at rajnish [at] iitm[dot]ac[dot]in

 Professional Experience


  • 2021 - Current: Professor, Chemical Engineering, IITM
  • 2016 - 2021: Associate Professor, Chemical Engineering, IIT-M
  • 2010- 2016: Sr. Scientist, National Chemical Laboratory, Pune, India
  • 2009-2010: Post Doctoral Research Fellow, National Research Council Canada, Ottawa
  • 2004-2009: Ph.D. Student & Graduate Research Assistant, University of British Columbia, Vancouver, Canada
  • 2003-2004: Research Engineer, Hindustan Zinc Ltd, Udaipur (Sterlite Industries (I) Ltd), India


Research Interest


  • Gas Hydrates (Formation, Inhibition & Recovery)
  • Carbon Dioxide Capture & Sequestration
  • Methane & Hydrogen Storage Material
  • Water Purification and Treatment by Gas Hydrate Process
  • Hydrothermal Liquefaction at sub-critical and super-critical conditions



Most Cited Works