caa a22 4500 606169490 CHVBK 20210128100712.0 cr unu---uuuuu 210128e20151001xx s 000 0 eng 10.1007/s10098-015-0899-8 doi (NATIONALLICENCE)springer-10.1007/s10098-015-0899-8 Polystyrene pyrolysis using silica-alumina catalyst in fluidized bed reactor [Elektronische Daten] [Saeedeh Imani Moqadam, Mojtaba Mirdrikvand, Behrooz Roozbehani, Abdolreza Kharaghani, Mohammad Shishehsaz] Catalytic degradation of polystyrene (PS) at ambient pressure was investigated in this study. Samples of PS and catalyst were mixed in a semi-batch reactor. Experiments were carried out in a Pyrex reactor in different conditions, taking temperature and catalyst/PS mass ratio as variables to determine the kinetic parameters. The results indicated that increasing the temperature causes conversion increase. The products of the degradation mostly consist of liquid, gas, and solid residue. The pyrolysis of PS was examined as an effective way to recycle this polymer and recover its styrene monomer. Based on the weight loss of polymer sample, the reaction kinetic parameters are calculated and discussed in the paper. In addition, the effects of temperature and catalyst/polymer ratio were examined, comparing its result to the gaseous and liquid pyrolysis products. Since the oil product contained a high percentage of styrene monomer (>80%), it is possible to use it directly for the reproduction of the polymer. The experiments indicated a unique catalytic performance for degradation of PS with selectivity to aromatics more than 99%. The products contained styrene, as the major product, and ethyl benzene, indene, and propyl benzene to some amounts in the liquid. Order of reaction, pre-exponential factor and activation energies were determined using the nth order model technique method. According to the results E (activation energy) and A 0 (Pre-exponential factor) are as the following 1.1326, 194 (kJmol−1) and 3.2668×1014min−1, respectively. Springer-Verlag Berlin Heidelberg, 2015 Catalytic conversion nationallicence Polystyrene nationallicence Pyrolysis nationallicence Polymer nationallicence Imani Moqadam Saeedeh Thermal Process Engineering, Otto von Guericke University, P.O. 4120, 39106, Magdeburg, Germany aut Mirdrikvand Mojtaba Thermal Process Engineering, Otto von Guericke University, P.O. 4120, 39106, Magdeburg, Germany aut Roozbehani Behrooz Research Center of Petroleum University of Technology, Abadan, Iran aut Kharaghani Abdolreza Thermal Process Engineering, Otto von Guericke University, P.O. 4120, 39106, Magdeburg, Germany aut Shishehsaz Mohammad Research Center of Petroleum University of Technology, Abadan, Iran aut Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/7(2015-10-01), 1847-1860 1618-954X 17:7<1847 2015 17 10098 https://doi.org/10.1007/s10098-015-0899-8 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10098-015-0899-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Imani Moqadam Saeedeh Thermal Process Engineering, Otto von Guericke University, P.O. 4120, 39106, Magdeburg, Germany aut NATIONALLICENCE 700 1- Mirdrikvand Mojtaba Thermal Process Engineering, Otto von Guericke University, P.O. 4120, 39106, Magdeburg, Germany aut NATIONALLICENCE 700 1- Roozbehani Behrooz Research Center of Petroleum University of Technology, Abadan, Iran aut NATIONALLICENCE 700 1- Kharaghani Abdolreza Thermal Process Engineering, Otto von Guericke University, P.O. 4120, 39106, Magdeburg, Germany aut NATIONALLICENCE 700 1- Shishehsaz Mohammad Research Center of Petroleum University of Technology, Abadan, Iran aut NATIONALLICENCE 773 0- Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/7(2015-10-01), 1847-1860 1618-954X 17:7<1847 2015 17 10098