Green Synthesis of Nano catalysts for Sustainable Petrochemical Refining Tara Singla, Deepa Bisht, Madhur Taneja, Sanjay Bhatnagar, Hemalatha K and Soumita Talukdar E3S Web of Conf., 547 (2024) 03022 Published online: 09 July 2024 DOI: 10.1051/e3sconf/202454703022