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OSDA-Free Seeded Cu-Containing ZSM-5 Applied for NH3-SCR-DeNOx.


ABSTRACT: 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 °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-DeNOx) 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-DeNOx.

SUBMITTER: Jablonska M 

PROVIDER: S-EPMC10633853 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature

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OSDA-Free Seeded Cu-Containing ZSM-5 Applied for NH<sub>3</sub>-SCR-DeNO<sub><i>x</i></sub>.

Jabłońska Magdalena M   Palčić Ana A   Lukman Muhammad Fernadi MF   Wach Anna A   Bertmer Marko M   Poppitz David D   Denecke Reinhard R   Wu Xiaochao X   Simon Ulrich U   Pöppl Andreas A   Gläser Roger R  

ACS omega 20231024 44


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 °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 selecti  ...[more]

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