Au–metal oxide support interface as catalytic active sites

2013 ◽  
Vol 3 (11) ◽  
pp. 2881 ◽  
Author(s):  
Yi Y. Wu ◽  
Neema A. Mashayekhi ◽  
Harold H. Kung
Keyword(s):  
Metal Oxide ◽  
Active Sites ◽  
Oxide Support ◽  
Metal Oxide Support ◽  
Catalytic Active Sites

ChemInform Abstract: Au-metal Oxide Support Interface as Catalytic Active Sites

ChemInform ◽  
2013 ◽  
Vol 44 (50) ◽  
pp. no-no
Author(s):  
Yi Y. Wu ◽  
Neema A. Mashayekhi ◽  
Harold H. Kung
Keyword(s):  
Metal Oxide ◽  
Active Sites ◽  
Oxide Support ◽  
Metal Oxide Support ◽  
Catalytic Active Sites

scholarly journals A Combined Computational and Experimental Study of Methane Activation during Oxidative Coupling of Methane (OCM) by Surface Metal Oxide Catalysts

2021 ◽  
Author(s):  
Daniyal Kiani ◽  
Sagar Sourav ◽  
Jonas Baltrusaitis ◽  
Israel E Wachs
Keyword(s):  
Experimental Study ◽  
Metal Oxide ◽  
Oxidative Coupling ◽  
Active Sites ◽  
Computational Models ◽  
Oxidative Coupling Of Methane ◽  
Catalytic Active Sites ◽  
Surface Metal ◽  
Heterolytic Dissociation ◽  
First Time

The experimentally validated computational models developed herein, for the first time, show that Mn-promotion does not enhance the activity of the surface Na2WO4 catalytic active sites for CH4 heterolytic dissociation...

Surface activation by electron scavenger metal nanorod adsorption on TiH2, TiC, TiN, and Ti2O3

2021 ◽  
Author(s):  
Yoyo Hinuma ◽  
Shinya Mine ◽  
Takashi Toyao ◽  
Zen Maeno ◽  
Ken-ichi Shimizu
Keyword(s):  
Metal Oxide ◽  
Local Environment ◽  
Support Surface ◽  
Surface Activation ◽  
Oxide Support ◽  
Electron Scavenger ◽  
Metal Oxide Support

Metal/oxide support perimeter sites are known to provide unique properties because the nearby metal changes the local environment on the support surface. In particular, the electron scavenger effect reduces the...

scholarly journals Strong metal oxide-support interactions in carbon/hematite nanohybrids activate novel energy storage modes for ionic liquid-based supercapacitors

2019 ◽  
Vol 20 ◽  
pp. 188-195 ◽  
Author(s):  
Feili Lai ◽  
Jianrui Feng ◽  
Tobias Heil ◽  
Gui-Chang Wang ◽  
Peter Adler ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Energy Storage ◽  
Metal Oxide ◽  
Oxide Support ◽  
Metal Oxide Support

The Development of a Holey Metal Oxide Support Film for High Temperature “Ex-Situ” Tem Oxidation Studies

2001 ◽  
Vol 7 (S2) ◽  
pp. 1214-1215 ◽  
Author(s):  
C.E. Kliewer ◽  
J. Varon ◽  
A. Malek ◽  
G.J. DeMartin
Keyword(s):  
High Temperature ◽  
Metal Oxide ◽  
High Temperature Oxidation ◽  
Carbon Support ◽  
Ex Situ ◽  
Temperature Oxidation ◽  
Oxide Support ◽  
Metal Oxide Support ◽  
Carbon Coated ◽  
Tem Grid

Transmission electron microscopy (TEM) has traditionally served as an important tool for understanding the physical properties of many materials. Recent improvements in “ex-situ” techniques have further strengthened the role of TEM as a unique characterization method.The use of ExxonMobilfs dedicated reactor system for studying metal oxidation at moderate temperatures has been reported. However, high temperature oxidation studies have been limited by the use of holey carbon support films, which oxidize and disintegrate during these experiments. Consequently, a new method was developed to replace the holey carbon support film with a holey metal oxide support film that both maintains its structural integrity during high temperature oxidation and remains electron transparent.The new support film was prepared using a commercially available, holey carbon coated TEM grid as a template (Figure 1). An Al metal film (∼10nm thick) was deposited onto the holey carbon coated side of the TEM grid using a magnetron sputtering system.

scholarly journals Simultaneous deposition of Au nanoparticles during flame synthesis of TiO2 and SiO2

2003 ◽  
Vol 18 (1) ◽  
pp. 115-120 ◽  
Author(s):  
L. Mädler ◽  
W. J. Stark ◽  
S. E. Pratsinis
Keyword(s):  
Metal Oxide ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Au Nanoparticles ◽  
Visible Region ◽  
Gold Deposits ◽  
Absorption Bands ◽  
Oxide Support ◽  
Metal Oxide Support

Nanostructured gold/titania and gold/silica particles with up to 4 wt% Au were made by a single-step process in a spray flame reactor. Gold(III)-chloride hydrate and titania- or silica-based metalorganic precursors were mixed in a liquid fuel solution, keeping concentrations in the flame and overall combustion enthalpy constant. The powders were characterized by x-ray diffraction, transmission electron microscopy, Brunauer–Emmett–Teller, and ultraviolet–visible analysis. The titania or silica specific surface area and the crystalline structure of titania were not affected by the presence of gold in the flame. Furthermore the size of the gold deposits was independent of the metal oxide support (TiO2 or SiO2) and its specific surface area (100 and 320 m2/g, respectively). The gold nanoparticles were nonagglomerated, spherical, mostly single crystalline, and well dispersed on the metal oxide support. Depending on the Au weight fraction (1, 2, and 4 wt%) the Au nanoparticles' mass mean diameter was 3, 7, and 15 nm, respectively, on both titania and silica. The particles showed surface plasmon absorption bands in the ultraviolet–visible region, which is typical for nano-sized gold. This absorption band was red shifted in the case of the titania support, while no shift occurred with the silica support.

Utilizing Chemical Raman Enhancement: A Route for Metal Oxide Support-Based Biodetection

2010 ◽  
Vol 115 (3) ◽  
pp. 620-630 ◽  
Author(s):  
Sarah J. Hurst ◽  
H. Christopher Fry ◽  
David J. Gosztola ◽  
Tijana Rajh
Keyword(s):  
Metal Oxide ◽  
Oxide Support ◽  
Raman Enhancement ◽  
Metal Oxide Support
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