Synthesis of a Core@Shell Zeolitic Hydrocarbon Adsorbent to Control Cold-Start Emissions in Automotive Exhaust

MASOUMIRFARD, NIMA; F. KLEITZ; KALIAGUINE, SERGE; ARNAL P.M

Montreal

Conferencia; Nano Quebec; 2012

Automotive emissions are known as significant sources of air pollution. Catalytic convertors are only able to eliminate the steady-state emissions. Therefore, all toxic emissions during the cold-start period are being released to the atmosphere. Common strategy to solve this problem is to employ hydrocarbon traps to keep emissions until the catalyst reaches its ideal working temperature. Recent studies in our group [1,2] demonstrated that ZSM-12(Ag+) is the best choice among all conventional molecular sieves; however, still significant improvement is required. Modifying this conventional trap via synthesizing a novel zeolitic architecture, i.e. core@ZSM-12 and hollow ZSM-12 spheres, are the main focus of this study.