Mesostructured Pd/Mn3O4 catalyst for efficient low-temperature CO oxidation especially under moisture condition

RSC Advances ◽  
2014 ◽  
Vol 4 (67) ◽  
pp. 35762-35768 ◽  
Author(s):  
Gengnan Li ◽  
Liang Li ◽  
Yuan Yuan ◽  
Yinyin Yuan ◽  
Yongsheng Li ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Co Oxidation ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Moisture Condition ◽  
Highly Dispersed ◽  
Low Temperature Co Oxidation

As-synthesized Pd/Mn3O4 catalysts possess relatively high surface area and highly dispersed palladium species and show much higher catalytic activity and stability for CO oxidation especially under wet conditions.

High-surface-area activated red mud supported Co3O4 catalysts for efficient catalytic oxidation of CO

RSC Advances ◽  
2016 ◽  
Vol 6 (97) ◽  
pp. 94748-94755 ◽  
Author(s):  
Zhong-Pan Hu ◽  
Hui Zhao ◽  
Ze-Min Gao ◽  
Zhong-Yong Yuan
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Co Oxidation ◽  
Red Mud ◽  
High Surface ◽  
High Surface Area ◽  
High Catalytic Activity ◽  
Oxidation Of Co ◽  
Catalytic Oxidation Of Co ◽  
Low Temperature Co Oxidation

Red mud is activated and employed as the support of Co3O4 catalysts, exhibiting high catalytic activity for low-temperature CO oxidation.

scholarly journals Facile synthesis of high-surface area platinum-doped ceria for low temperature CO oxidation

2019 ◽  
Vol 333 ◽  
pp. 105-112 ◽  
Author(s):  
Suresh Gatla ◽  
Daniel Aubert ◽  
Valérie Flaud ◽  
Rémi Grosjean ◽  
Thomas Lunkenbein ◽  
...  
Keyword(s):  
Low Temperature ◽  
Co Oxidation ◽  
Surface Area ◽  
High Surface ◽  
High Surface Area ◽  
Doped Ceria ◽  
Facile Synthesis ◽  
Low Temperature Co Oxidation

scholarly journals Catalytic activity of nanostructured Au: Scale effects versus bimetallic/bifunctional effects in low-temperature CO oxidation on nanoporous Au

2013 ◽  
Vol 4 ◽  
pp. 111-128 ◽  
Author(s):  
Lu-Cun Wang ◽  
Yi Zhong ◽  
Haijun Jin ◽  
Daniel Widmann ◽  
Jörg Weissmüller ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Co Oxidation ◽  
Surface Area ◽  
Photoelectron Spectroscopy ◽  
Scale Effects ◽  
Structural Parameters ◽  
Kinetic Measurements ◽  
X Ray ◽  
Low Temperature Co Oxidation

The catalytic properties of nanostructured Au and their physical origin were investigated by using the low-temperature CO oxidation as a test reaction. In order to distinguish between structural effects (structure–activity correlations) and bimetallic/bifunctional effects, unsupported nanoporous gold (NPG) samples prepared from different Au alloys (AuAg, AuCu) by selective leaching of a less noble metal (Ag, Cu) were employed, whose structure (surface area, ligament size) as well as their residual amount of the second metal were systematically varied by applying different potentials for dealloying. The structural and chemical properties before and after 1000 min reaction were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). The catalytic behavior was evaluated by kinetic measurements in a conventional microreactor and by dynamic measurements in a temporal analysis of products (TAP) reactor. The data reveal a clear influence of the surface contents of residual Ag and Cu species on both O2 activation and catalytic activity, while correlations between activity and structural parameters such as surface area or ligament/crystallite size are less evident. Consequences for the mechanistic understanding and the role of the nanostructure in these NPG catalysts are discussed.

Advantages of high surface area niobium oxide catalysts on MgH2 sorption properties

2006 ◽  
Vol 927 ◽  
Author(s):  
Vinay V Bhat ◽  
Aline Rougier ◽  
Luc Aymard ◽  
Gholam A Nazri ◽  
Jean-Marie Tarascon
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Surface Area ◽  
Niobium Oxide ◽  
High Surface ◽  
High Surface Area ◽  
Hydrogen Desorption ◽  
Sorption Properties ◽  
Desorption Rate ◽  
Nano Crystalline

ABSTRACTWe report the synthesis by ‘chimie douce’ route of high surface area (200 m2/g) nano crystalline Nb2O5 (so called p-Nb2O5) and the importance of its addition to enhance the hydrogen sorption properties of MgH2. All of the prepared Nb2O5 catalysts induce faster kinetics, up to twice the desorption rate, than commonly used commercial Nb2O5. Among them, both p-Nb2O5 and Nb2O5:350 (p-Nb2O5 heated to 350 °C) exhibit the best catalytic activity, since a 5.2 wt% hydrogen desorption was achieved at 300 °C for (MgH2)p−Nb2O5, as compared to less than 4 wt.% for commercial Nb2O5 added MgH2, (MgH2)c−Nb2O5, within 12 min. Furthermore, due to the addition of high surface area Nb2O5, the desorption temperature was successfully lowered down to 200 °C, with a significant amount of desorbed hydrogen (4.5 wt%). In contrast at this “low” temperature, (MgH2)c−Nb2O5 shows no desorption.

scholarly journals Graphene-supported 2D cobalt oxides for catalytic applications

2020 ◽  
Author(s):  
Loïc Michel ◽  
Sécou Sall ◽  
Thierry Dintzer ◽  
Cerise Robert ◽  
Antoine Demange ◽  
...  
Keyword(s):  
Thin Films ◽  
Low Temperature ◽  
Co Oxidation ◽  
High Surface ◽  
High Surface Area ◽  
Cobalt Nitrate ◽  
Cobalt Oxides ◽  
Highly Active ◽  
Low Temperature Co Oxidation ◽  
Catalytic Applications

Graphene-supported, highly reduced, high surface area CoO thin films, produced by straight-forward NaBH4 reduction of cobalt nitrate in a sonicated DMF suspension of bulk graphite, are highly active for low temperature CO oxidation.

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