Scientists and engineers from various parts of the world will meet in the Doon Valley at an International Sumposium to be held at the Indian Institute of Petroleum on the subject of catalysis. The two-day global meet will be organised on 19 and 20 January jointly by the IIP and the Catalysis Society of India in honour of Dr TSR Prasada Rao, director of the IIP, on the occasion of his sixtieth birthday.