Published in ACS Applied Materials & Interfaces

“Water Evaporation Process Analysis of Exhaust gas Purification Catalyst Materials Using Neutron,” by Wataru Yoshimune et al., was published in ACS Applied Materials & Interfaces.

Harmful substances emitted from automobiles equipped with internal  combustion engines are detoxified by exhaust gas purification systems. In a low-temperature environment, water vapor condenses inside the exhaust gas catalysts, thereby reducing the catalytic performance. Therefore, it is crucial to elucidate the condensed water distribution and its evaporation process. Herein, we propose a method for quantitative evaluation of the water content of exhaust gas catalysts during their evaporation processes based on time-resolved small-angle neutron scattering measurements. By controlling the pore structure, specifically the size and connectivity of the primary pores, the evaporation of water from exhaust gas catalysts can be accelerated. This method can further improve the performance of exhaust gas purification systems.

Title: In Situ Small-angle Neutron Scattering Analysis of Water Evaporation from Porous Exhaust-gas-catalyst Supports
Authors:Yoshimune, W., Kato, S., Harada, M.
Journal Name: ACS Applied Materials & Interfaces
Published: April 7, 2022
https://doi.org/10.1021/acsami.2c01594