用于NH-SCR脱硝的无OSDA晶种含铜ZSM-5
OSDA-Free Seeded Cu-Containing ZSM-5 Applied for NH-SCR-DeNO.
作者信息
Jabłońska Magdalena, Palčić Ana, Lukman Muhammad Fernadi, Wach Anna, Bertmer Marko, Poppitz David, Denecke Reinhard, Wu Xiaochao, Simon Ulrich, Pöppl Andreas, Gläser Roger
机构信息
Institute of Chemical Technology, Universität Leipzig, Linnéstr. 3, 04103 Leipzig, Germany.
Laboratory for the Synthesis of New Materials, Division of Materials Chemistry, Rud̵er Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia.
出版信息
ACS Omega. 2023 Oct 24;8(44):41107-41119. doi: 10.1021/acsomega.3c03721. eCollection 2023 Nov 7.
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 NO with NH (NH-SCR-DeNO) 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 NH-SCR-DeNO.
一系列ZSM-5沸石材料是由无有机结构导向剂（OSDA）的晶种体系合成的，包括纳米级硅沸石-1（12 wt%水悬浮液或粉末形式）或纳米级ZSM-5（在100或170°C下制备的ZSM-5粉末形式）。物理化学表征显示，基于硅沸石-1的样品中存在聚集物种。相反，基于ZSM-5晶种的催化剂显示出孤立的铜物种，因此，在用NH （NH-SCR-DeNO）选择性催化还原NO的过程中观察到更高的NO转化率。此外，对传统上在OSDA存在下制备的含铜ZSM-5催化剂与采用环境更友好方法（无OSDA）制备的催化剂进行比较，结果显示它们在NH-SCR-DeNO中具有相当的活性。
Zotero 插件