Effect of Temperature and Pressure on Stability of Metallocene Catalyst with Methyl Aluminoxane Subita Bhagat 1 , Nikhil Prakash 2 1 Assistant Professor, Department of Chemical Engineering, SLIET-Longowal, 148106, India 2 Assistant Professor, Department of Chemical Engineering, SLIET-Longowal, 148106, India Corresponding Author E-mail: subitabhagat424@gmail.com 2 nikhilprakash112@yahoo.com Abstract Catalysts are used to increase the rate of reactions. Metallocene catalyst is one such effective catalyst generally used to form polymers. The transition of monomers into metal sites at low pressure and temperature were observed in earlier work. Methyl aluminoxane (MAO) used as a catalyst for polymerization and propylene along with varying temperature and pressure. Optimized values of temperature and pressure are worked upon in this work through particle swarm optimization (PSO).Overall process consists of monomer initialization. This phase is termed as forming population for polymerization. Next phase includes population selection. This phase extract monomers based upon the crossover values. Multiple monomers are combined to generate new offspring that is used within next iteration. Metaheuristic approach includes multiple parameters tuning including temperature and pressure with each iteration. By varying the temperature and pressure new polymers are obtained that are stable in nature. Keywords: Particle Swarm Optimization, Metallocene catalyst, Temperature, Pressure. 1. Introduction Metallocene catalyst used to generate polymers that may or may not be stable. Temperature and pressure impact the formation of metal polymers[1]. Through ZeiglerNatta Catalyst, metal polymers were formed but at low temperature. The polymer breaks down as the temperature and pressure increases and hence stability is an issue with this catalyst[2]. For the high-pressure polymerization, MAO catalyst is used for combining monomers for stable polymers. The issue includes the breakage of molecules at high temperature and pressure[3]. To stabilize polymer structure, metallocene catalyst is mixed with polyolefin nanocomposites. The temperature and pressure are varied with the metaheuristic approach and stability of the formed polymers is examined. YMER || ISSN : 0044-0477 VOLUME 21 : ISSUE 2 (Feb) - 2022 http://ymerdigital.com Page No:128