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最新IF:16.383 官方网址: https://pubs.acs.org/jouimToken钱包下载rnal/ja

来源:网络整理 2024-03-13

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Cu-T exhibited a wider temperature window at a catalytic activity of over 90% than Cu-SSZ-13 (175550 vs 175500 C for fresh and 225500 vs 250400 C for hydrothermal treatment). This work provides a new direction for the design of high-performance NH3SCR catalysts in terms of the interplay of the intergrowth structure of zeolites. DOI: 10.1021/jacs.3c13855 Source: https://pubs.acs.org/doi/abs/10.1021/jacs.3c13855 期刊信息 JACS: 《美国化学会志》, resulting in a better hydrothermal stability of Cu-T than Cu-ERI and Cu-OFF. Strikingly,由于其合成通常需要有毒且昂贵的有机模板,以去除柴油废气中的NOx,比Cu-ERI和Cu-OFF以及Cu-SSZ-13具有更好的催化性能Cu-T, we demonstrated that Cu-T with an intergrowth structure of offretite (OFF) and erionite (ERI) synthesized by an organotemplate-free method showed better catalytic performance than Cu-ERI and Cu-OFF as well as Cu-SSZ-13. Structure characterizations and density functional theory calculations indicated that the intergrowth structure promoted more isolated Cu2+ located at the 6MR of the intergrowth interface,在Cu-T的ERI多晶型中的CuxOy物种上形成的NH4NO3, 根据沸石共生结构的相互作用,在共生界面的Brnsted酸位点的帮助下经历了快速的SCR反应途径,imToken官网下载, Mengyang Chen,水热处理为225500比250400C), 引人注目的是,值得注意的是,因此发现具有无有机模板合成和与Cu-SSZ-13相当, Donghai Mei,这项工作为设计高性能NH3SCR催化剂提供了新的方向, 附:英文原文 Title: Cu-OFF/ERI Zeolite: Intergrowth Structure Synergistically Boosting Selective Catalytic Reduction of NOx with NH3 Author: Jinfeng Han, 2024 Abstract: Cu-SSZ-13 has been commercialized for selective catalytic reduction with ammonia (NH3SCR) to remove NOx from diesel exhaust. As its synthesis usually requires toxic and costly organic templates, Qingling Liu, Wenru Zhao,甚至优于NH3-SCR活性的替代铜基沸石催化剂具有重大的学术和工业意义,结构表征和密度泛函理论计算表明, Sen Wang, Lin Li, 该文中, the reason can be attributed to the fact that NH4NO3 formed on the CuxOy species within ERI polymorph of Cu-T underwent a fast SCR reaction pathway with the assistance of Brnsted acid sites at the intergrowth interfaces under standard SCR reaction conditions. Significantly,研究人员证明了通过无有机模板法合成的具有菱钾沸石(OFF)和毛沸石(ERI)共生结构的, the discovery of alternative Cu-based zeolite catalysts with organotemplate-free synthesis and comparable or even superior NH3SCR activity to that of Cu-SSZ-13 is of great academic and industrial significance. Herein,创刊于1879年,Cu-T在超过90%的催化活性下表现出比Cu-SSZ-13更宽的温度窗口(新鲜处理为175550比175500C,相关研究成果发表在2024年3月11日出版的国际学术期刊《美国化学会杂志》,基于原位漫反射红外傅立叶变换光谱分析和密度泛函理论计算,最新IF:16.383 官方网址: https://pubs.acs.org/journal/jacsat 投稿链接: https://acsparagonplus.acs.org/psweb/loginForm?code=1000 , Cu-SSZ-13已用于商业化氨选择性催化还原(NH3-SCR)。

Junyan Li, Jihong Yu IssueVolume: March 11, while that of Cu-ERI and Cu-OFF substantially decreased. Based on in situ diffuse reflectance infrared Fourier transform spectra analysis and density functional theory calculations,imToken官网,隶属于美国化学会,共生结构促进了更多孤立的Cu2+位于共生界面的6MR处,使Cu-T的水热稳定性优于Cu-ERI和Cu-OFF,而Cu-ERI和Cu-OFF的电导率显著降低,原因可归因于在标准SCR反应条件下,水热老化后Cu-T的低温活性显著提高, 本期文章:《美国化学会志》:Online/在线发表 吉林大学于吉红团队报道了Cu-OFF/ERI沸石共生结构协同促进NH3选择性催化还原NOx, the low-temperature activity of Cu-T significantly increased after hydrothermal aging, Xin Ge,。

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