High-Temperature Stable Gold Nanoparticle Catalysts for Application under Severe Conditions: The Role of TiO2 Nanodomains in Structure and Activity

ACS Catalysis ◽  
2015 ◽  
Vol 5 (2) ◽  
pp. 1078-1086 ◽  
Author(s):  
Begoña Puértolas ◽  
Álvaro Mayoral ◽  
Raul Arenal ◽  
Benjamín Solsona ◽  
Alaina Moragues ◽  
...  
Keyword(s):  
High Temperature ◽  
Gold Nanoparticle ◽  
Nanoparticle Catalysts ◽  
Structure And Activity

High-Temperature Catalytic Reforming of n-Hexane over Supported and Core–Shell Pt Nanoparticle Catalysts: Role of Oxide–Metal Interface and Thermal Stability

Nano Letters ◽  
2014 ◽  
Vol 14 (8) ◽  
pp. 4907-4912 ◽  
Author(s):  
Kwangjin An ◽  
Qiao Zhang ◽  
Selim Alayoglu ◽  
Nathan Musselwhite ◽  
Jae-Youn Shin ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Core Shell ◽  
Pt Nanoparticle ◽  
Metal Interface ◽  
Catalytic Reforming ◽  
Nanoparticle Catalysts

The role of protein binding in the poisoning of gold nanoparticle catalysts

2010 ◽  
Vol 76 (1) ◽  
pp. 241-247 ◽  
Author(s):  
Yan Chen ◽  
Kaleyhia Flowers ◽  
Milagros Calizo ◽  
Sandra Whaley Bishnoi
Keyword(s):  
Protein Binding ◽  
Gold Nanoparticle ◽  
Nanoparticle Catalysts

scholarly journals The Role of Chromium in Iron-based High-Temperature Water-Gas Shift Catalysts under Industrial Conditions

2021 ◽  
pp. 120465
Author(s):  
M.I. Ariëns ◽  
V. Chlan ◽  
P. Novák ◽  
L.G.A. van de Water ◽  
A.I. Dugulan ◽  
...  
Keyword(s):  
High Temperature ◽  
Water Gas Shift ◽  
High Temperature Water ◽  
Iron Based ◽  
Water Gas ◽  
Temperature Water

Microstructure of high-temperature (>73 °C) siliceous sinter deposited around hot springs and geysers, Yellowstone National Park: the role of biological and abiological processes in sedimentation

2003 ◽  
Vol 40 (11) ◽  
pp. 1611-1642 ◽  
Author(s):  
Donald R Lowe ◽  
Deena Braunstein
Keyword(s):  
High Temperature ◽  
Yellowstone National Park ◽  
National Park ◽  
Hot Springs ◽  
Strain Effect ◽  
Temperature Sinter ◽  
Architectural Features ◽  
Siliceous Sinter ◽  
High Temperature Sinter

Slightly alkaline hot springs and geysers in Yellowstone National Park exhibit distinctive assemblages of high-temperature (>73 °C) siliceous sinter reflecting local hydrodynamic conditions. The main depositional zones include subaqueous pool and channel bottoms and intermittently wetted subaerial splash, surge, and overflow areas. Subaqueous deposits include particulate siliceous sediment and dendritic and microbial silica framework. Silica framework forms thin, porous, microbe-rich films coating subaqueous surfaces. Spicules with intervening narrow crevices dominate in splash zones. Surge and overflow deposits include pool and channel rims, columns, and knobs. In thin section, subaerial sinter is composed of (i) dark brown, nearly opaque laminated sinter deposited on surfaces that evaporate to dryness; (ii) clear translucent silica deposited subaqueously through precipitation driven by supersaturation; (iii) heterogeneous silica representing silica-encrusted microbial filaments and detritus; and (iv) sinter debris. Brownish laminations form the framework of most sinter deposited in surge and overflow zones. Pits and cavities are common architectural features of subaerial sinter and show concave-upward pseudo-cross-laminations and micro-unconformities developed through migration. Marked birefringence of silica deposited on surfaces that evaporate to dryness is probably a strain effect. Repeated wetting and evaporation, often to dryness, and capillary effects control the deposition, morphology, and microstructure of most high-temperature sinter outside of the fully subaqueous zone. Microbial filaments are abundant on and within high-temperature sinter but do not provide the main controls on morphology or structuring except in biofilms developed on subaqueous surfaces. Millimetre-scale lamination cyclicity in much high-temperature sinter represents annual layering and regular seasonal fluctuations in silica sedimentation.

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