[2B08-11] Environmental chemistry

1:00 PM - 1:15 PM JST(4:00 AM - 4:15 AM UTC)Japanese

[2B08] Synthesis and Adsorption Properties of Potassium-Substituted MOR-Type Zeolites

○Hiroto Shioya¹, Kohei Kume¹, Motomu Sakai^1,2, Masahiko Matsukata^1,3,4 (1. Waseda university, 2. Tokyo university of science, 3. Research Organization for Nano & Life Innovation, Waseda University, 4. Advanced Research Institute for Science and Engineering, Waseda University)

Keywords:

HC trap,Exhaust gas purification,Mordenite

Hydrocarbon (HC) traps are one of the technologies used for automotive exhaust gas purification and require effective adsorption of unburned hydrocarbons at low temperatures. Large-pore zeolites are promising HC trap materials because of their ability to adsorb aromatic hydrocarbons; however, their durability remains an issue. In this study, mordenite (MOR), which is expected to exhibit superior durability, was investigated. The effect of K cation addition during synthesis on the distribution of ion-exchange sites was evaluated using toluene adsorption properties. Toluene adsorption was carried out at 353 K, followed by purging and temperature-programmed desorption up to 873 K at a heating rate of 15 K/min.