A detailed insight into the catalytic reduction of NO operated by Cr–Cu nanostructures embedded in a CeO2 surface
文献信息
Mauro Boero, Kazuki Tamai
Replacing rare and expensive elements, such as Pt, Pd, and Rh, commonly used in catalytic devices with more abundant and less expensive ones is mandatory to realize efficient, sustainable and economically appealing three-way catalysts. In this context, the surface of a Cr–Cu/CeO2 system represents a versatile catalyst for the conversion of toxic NO into harmless N2. Yet, a clear picture of the underlying mechanism is still missing. We provide here a detailed insight into such a reaction mechanism by means of a combined experimental and theoretical study. Fourier-transform infrared spectroscopy is used to detect all the products resulting from catalytic reactions of NO and CO on the surface of a Cr–Cu/CeO2 nanocatalyst. CO pulsing experiments unveil that reactions of CO with O atoms at the Cr–Cu/CeO2 surface are the major factors responsible for the formation of surface vacancies. On these grounds, a comprehensive picture of the NO reduction and the role of both Cu and Cr dopants and vacancies is rationalized by first-principles modeling. Our findings provide a general route for the realization of ceria-based cost-effective catalysts.
相关文献
Direct functionalization at the boron center of antiaromatic chloroborole
Holger Braunschweig, Thomas Kupfer
DOI: 10.1039/B808483A
A facile approach to fabricate functionalized superparamagnetic copolymer-silica nanocomposite spheres
Dechao Niu, Yongsheng Li, Xiaoli Qiao, Liang Li, Wenru Zhao, Hangrong Chen, Qiaoling Zhao, Zhi Ma
DOI: 10.1039/B807781A
Facile one pot synthesis of a range of reversible addition–fragmentation chain transfer (RAFT) agents
Jared Skey, Rachel K. O’Reilly
DOI: 10.1039/B804260H
Direct observation of time and temperature dependent transition from spherical micelles to vesicles
Hua Wei, Cui-yun Yu, Cong Chang, Chang-yun Quan, Shao-bo Mo, Si-xue Cheng, Xian-zheng Zhang, Ren-xi Zhuo
DOI: 10.1039/B811553B
Low reactivity of non-bridging oxygen defects on stoichiometric silica surfaces
Said Hamad
DOI: 10.1039/B807291D
Diol-substituted boron complexes of dipyrrolyl diketones as anion receptors and covalently linked ‘pivotal’ dimers
Yasunobu Fujii, Yuta Mihashi
DOI: 10.1039/B806361C
Engineering tandem modular protein based reversible hydrogels
Yi Cao, Hongbin Li
DOI: 10.1039/B806684A
Open cellular reactive porous membranes from high internal phase emulsions
Peter Krajnc
DOI: 10.1039/B807095D
Translocation of copper within the cavity of cryptands: reversible fluorescence signaling
Kalyan K. Sadhu, Parimal K. Bharadwaj
DOI: 10.1039/B806426A
State-resolved UV photofragmentation spectrum of the metal dication complex [Zn(pyridine)4]2+
Guohua Wu, Caroline Norris, Hamish Stewart, Hazel Cox, Anthony J. Stace
DOI: 10.1039/B806469E
您可能还喜欢
6-氯-2H-1,4-苯并噁嗪-3(4H)-酮(CAS号:7652-29-1)应用于哪些行业?
6-氯-2H-1,4-苯并噁嗪-3(4H)-酮主要应用于医药、农药和聚合物等领域。在医药领域,该化合物可用于合成抗菌药物;在农药领域,可用作杀虫剂的中间体;在聚...
活性氧化铝(CAS号:1302-74-5)应用于哪些行业?
活性氧化铝广泛应用于医药、聚合物、传感器、半导体和催化等领域。在医药行业,活性氧化铝用作吸附剂和干燥剂,有助于去除杂质和水分。在聚合物行业,它用作增白剂和抗结块...
什么是硅胶(CAS号:112926-00-8)?
硅胶(Silica gel, pptd.,cryst.-free)是一种无定形、多孔的硅酸盐材料,主要成分为二氧化硅(SiO₂)。其结构由硅氧四面体构成,通过酸...
二乙基甲基一氢硅烷(CAS号:760-32-7)的主要用途是什么?
二乙基甲基一氢硅烷主要用于有机合成、表面处理以及作为溶剂。它还被用作合成其他硅烷化合物的原料,以及在涂料、粘合剂和密封剂中的应用。
在合成中是否有N-花生四烯酰基甘氨酸(CAS号:179113-91-8)的替代品?
在合成过程中,可以考虑使用类似结构的化合物作为替代品,例如N-亚油酰基甘氨酸或N-花生二烯酰基甘氨酸。这些替代品在结构上有类似的双键位置,但可能具有不同的物理化...
在合成中是否有1-(4-甲氧基苯基)丙烷-1,2-二酮(CAS号:10557-27-4)的替代品?
在合成过程中,可以考虑使用类似结构的化合物作为替代品,例如1-(3-甲氧基苯基)丙烷-1,2-二酮或1-(4-羟基苯基)丙烷-1,2-二酮。这些替代品具有相似的...
N-(4-氨基-1-苄基-3-羟基-5-苯基戊基)-3-甲基-2-(2-氧代四氢嘧啶-1-基)-丁酰胺 5-氧代吡咯烷-2-甲酸(CAS号:192726-06-0)通常如何合成?
该化合物通常通过一系列复杂的有机合成步骤获得。首先,通过芳香族化合物的羟基化反应获得羟基化产物,然后通过酰化反应形成酰胺中间体,最后通过环化反应得到目标产物。常...
(S)-2-氨基-3-喹啉-2-丙酸(CAS号:161513-46-8)的市场或研究趋势如何?
该化合物作为生物活性化合物,尤其是在药物化学领域表现出色。近年来,随着对新型抗炎、抗病毒和抗癌药物的研究增加,其市场和研究趋势持续增长。此外,其在神经科学领域的...
核黄素磷酸钠(CAS号:130-40-5)安全吗?
核黄素磷酸钠在常规使用条件下安全,但高剂量可能引起刺激性反应。操作时需佩戴防护手套和护目镜,避免吸入粉尘。若接触皮肤或眼睛,应立即用大量清水冲洗。急救时需根据接...
盐酸丙胺卡因杂质A(EP) 标准品(CAS号:19281-31-3)通常如何合成?
盐酸丙胺卡因杂质A(EP) 标准品可通过重氮化反应和随后的酰胺化反应合成。首先,利用氯化反应将苯环上的氢原子转化为氯原子,然后通过芳香族重氮化反应引入氨基,最后...
来源期刊
Physical Chemistry Chemical Physics

Physical Chemistry Chemical Physics (PCCP) is an international journal co-owned by 19 physical chemistry and physics societies from around the world. This journal publishes original, cutting-edge research in physical chemistry, chemical physics and biophysical chemistry. To be suitable for publication in PCCP, articles must include significant innovation and/or insight into physical chemistry; this is the most important criterion that reviewers and Editors will judge against when evaluating submissions. The journal has a broad scope and welcomes contributions spanning experiment, theory, computation and data science. Topical coverage includes spectroscopy, dynamics, kinetics, statistical mechanics, thermodynamics, electrochemistry, catalysis, surface science, quantum mechanics, quantum computing and machine learning. Interdisciplinary research areas such as polymers and soft matter, materials, nanoscience, energy, surfaces/interfaces, and biophysical chemistry are welcomed if they demonstrate significant innovation and/or insight into physical chemistry. Joined experimental/theoretical studies are particularly appreciated when complementary and based on up-to-date approaches.










![tert-Butyl N-[(2-chloropyridin-4-yl)methyl]carbamate structure tert-Butyl N-[(2-chloropyridin-4-yl)methyl]carbamate structure](https://cnstatic.chemtradehub.com/structs/916/916210-27-0-9f95.webp)

![Pyrazolo[1,5-a]pyridine-3-carbothioamide structure Pyrazolo[1,5-a]pyridine-3-carbothioamide structure](https://cnstatic.chemtradehub.com/structs/885/885275-44-5-aae0.webp)
![5-Methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-amine structure 5-Methyl-4,5,6,7-tetrahydropyrazolo[1,5-a]pyrazin-2-amine structure](https://cnstatic.chemtradehub.com/structs/122/1227210-33-4-8d64.webp)
