Name : [in Japanese]
Location : [in Japanese]
Date : October 20, 2022 - October 21, 2022
Pages 46-47
In this study, the chemical components in the ash of Quang Ninh (QN) coal from Vietnam were used for the preparation of zeolite. Reagents which match the ash composition of Quang Ninh (QN) coal were collected and ZSM-5 zeolite was prepared by hydrothermal synthesis method in the presence of the components of QN coal ash (CA). The catalysts with changing SiO2/Al2O3 ratios were characterized by crystallinity in XRD and pore properties in N2 adsorption and desorption measurements. Furthermore, catalytic cracking of low-density polyethylene (LDPE) was performed at 500°C using the Curie point pyrolyser method in order to investigate the difference in performance between zeolites with and without coal ash components. A conventional zeolite, H-ZSM-5-CR150(48h)_78, which was prepared at 150°C for 48h with SiO2/Al2O3 ratio of 78, exhibited the maximum conversion of 88%. When the zeolite, QNCA-H-ZSM-5 CR150(48h)_78, was prepared using coal ash components, the results from characterization of crystallinity and pore structure were almost same as those from the conventional one. However, the conversion of LDPE decreased while the gasoline fraction increased. Catalysts with higher crystallinity had the higher conversions.
