The Indo-German bilateral workshop “Cat4SusChem” was successfully organised from 23rd-26th September, 2025 at the Institute of Nano Science and Technology (INST), Mohali, India. Organized jointly by INST, Mohali and the Leibniz Institute for Catalysis (LIKAT), Rostock, the workshop was conducted under the Indo-German Science & Technology Centre (IGSTC), a joint initiative by the Department of Science & Technology (DST), Government of India and the Federal Ministry of Research, Technology and Space (BMFTR), Government of Germany ̶ with the patronage of Bharat Petroleum Corporation Limited (BPCL), Greater Noida.