| 초록 |
Among the technologies for removing nitrogen oxides (NOx), which is known as a secondary particulate matter-inducing precursor, selective catalytic reduction by NH3 (NH3-SCR) applied to car waste gas treatment has a disadvantage of supplying NH3 by converting urea, and thus an alternative technology is required. Carbon monoxide (CO) is considered a good alternative because it can be easily supplied from fuels directly from swept gas or by engine technology. Currently, CO-SCR technology has been studied in a limited range, and in particular, despite the use of zeolites as NH3-SCR commercial catalysts, the CO-SCR studies using these zeolites as supports are hardly reported. In this study, CO-SCR catalysts were synthesized by impregnation of iridium into various types of zeolite supports, and NOx conversion was evaluated according to the type of support. The synthesized catalysts were characterized by PXRD, TEM, N2 sorption, and H2 chemisorption. |
