Journal
ACS OMEGA
Volume 8, Issue 44, Pages 41107-41119Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.3c03721
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A series of ZSM-5 zeolite materials were successfully synthesized from OSDA-free systems, and the catalysts based on ZSM-5 seeds showed higher NO conversion during NH3-SCR-DeNO(x) process.
A series of ZSM-5 zeolite materials were synthesized from organic structure-directing agent (OSDA)-free seeded systems, including nanosized silicalite-1 (12 wt % water suspension or in powder form) or nanosized ZSM-5 (powder form of ZSM-5 prepared at 100 or 170 degrees C). The physicochemical characterization revealed aggregated species in the samples based on silicalite-1. Contrarily, the catalysts based on ZSM-5 seeds revealed isolated copper species, and thus, higher NO conversion during the selective catalytic reduction of NOx with NH3 (NH3-SCR-DeNO(x)) was observed. Furthermore, a comparison of the Cu-containing ZSM-5 catalysts, conventionally prepared in the presence of OSDAs and prepared with an environmentally more benign approach (without OSDAs), revealed their comparable activity in NH3-SCR-DeNO(x).
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