His main research interests are in adsorption and transport in nanoporous materials and in heterogeneous reaction engineering, where he has authored over two hundred and seventy scientific papers in leading international journals. He has received numerous awards for his research, including the Shanti Swarup Bhatnagar Prize for Engineering Sciences from the Government of India, and the ExxonMobil Award for excellence from the Institution of Chemical Engineers. Since January 2010 he holds an Australian Professorial Fellowship from the Australian Research Council. He served the Regional Editor of the international journal Molecular Simulation between 2009 and 2015. He has held visiting positions at leading universities.