scholarly journals New high‐temperature noble‐metal thermocouple pairing

1975 ◽  
Vol 46 (8) ◽  
pp. 1107-1108 ◽  
Author(s):  
George E. Glawe
Keyword(s):  
High Temperature ◽  
Noble Metal

scholarly journals Synthesis of Ti3AuC2, Ti3Au2C2 and Ti3IrC2 by noble metal substitution reaction in Ti3SiC2 for high-temperature-stable Ohmic contacts to SiC

2017 ◽  
Vol 16 (8) ◽  
pp. 814-818 ◽  
Author(s):  
Hossein Fashandi ◽  
Martin Dahlqvist ◽  
Jun Lu ◽  
Justinas Palisaitis ◽  
Sergei I. Simak ◽  
...  
Keyword(s):  
High Temperature ◽  
Noble Metal ◽  
Substitution Reaction ◽  
Ohmic Contacts ◽  
Metal Substitution

scholarly journals A fiber-optic nanoplasmonic hydrogen sensor via pattern-transfer of nanofabricated PdAu alloy nanostructures

Nanoscale ◽  
2018 ◽  
Vol 10 (44) ◽  
pp. 20533-20539 ◽  
Author(s):  
Ferry Anggoro Ardy Nugroho ◽  
Robin Eklund ◽  
Sara Nilsson ◽  
Christoph Langhammer
Keyword(s):  
High Temperature ◽  
Noble Metal ◽  
Optical Fibers ◽  
Fiber Optic ◽  
Hydrogen Sensor ◽  
Parent Support ◽  
Pattern Transfer ◽  
High Temperature Annealing ◽  
Alloy Nanostructures

We demonstrate the transfer of arrays of nanofabricated noble metal and alloy nanostructures obtained by high-temperature annealing on a flat parent support onto optical fibers, to create a fiberoptic hysteresis-free nanoplasmonic hydrogen sensor.

Noble-metal associations related to Paleoproterozoic basic-hyperbasic magmatism in the Lapland-Onega province of Karelia

2020 ◽  
Vol 9 ◽  
pp. 14-18
Author(s):  
L. V. Kuleshevich ◽  
Keyword(s):  
High Temperature ◽  
Noble Metal ◽  
Related Structure ◽  
Copper Mineralization ◽  
Mineral Associations ◽  
Icp Ms ◽  
Nickel Ores

Topomineralogical studies are part of mineralogenic research conducted in the Paleoproterozoic Lapland-Onega rift-related structure in Karelia. These studies are important because of the location of promising areas and the study of deposits associated with basic-hyperbasic magmatism in Paleoproterozoic rift-related structures (chromite, titanomagnetite and nickel ores with PGE and gold). The aim of mineralogenic studies is to better understand major ore and noble-metal mineral associations by microprobe and ICP-MS-analyses. It was found that chromite ores are accompanied by high-temperature associations of platinoids — arsenides, sulfo-arsenides Pt, Rh, Ir and bismutotellurides Pt (with Pd), and sulfide Cu-Ni ores — mainly Pt-Pd bismutotellurides and tellurides. Titanomagnetite ores with low-sulfide copper mineralization contain stibio-sulfoarsenides, antimonides, stannides, and more rarely sulfides of Pd, Pd-Pt, and silver-containing gold.

Chemical Control of Noble Metal Catalysis by Main Group Elements

1997 ◽  
Vol 497 ◽  
Author(s):  
K. Asakura ◽  
K. Okumura ◽  
T. Inoue ◽  
T. Kubota ◽  
W-J. Chun ◽  
...  
Keyword(s):  
High Temperature ◽  
Noble Metal ◽  
Chemical Control ◽  
Noble Metals ◽  
Selective Reduction ◽  
Atomic Layer ◽  
Hydrogenation Reaction ◽  
Main Group ◽  
Main Group Elements ◽  
Temperature Reduction

ABSTRACTThe catalytic interaction of noble metal and main group elements in Rh/one-atomic layer GeO2/SiO2 and Pt/SbOx was investigated. The high temperature reduction produced RhGe and PtSb bimetallic particles in which Pt and Rh were electronically modified to retard catalytic activity. However, unique selective catalyses of Rh/one-atomic layer GeO2/SiO2 for CO hydrogenation reaction to oxygenate compounds and for NO+CO reaction to N2 were found. Under the low temperature reduction of Rh/one-atomic layer GeO2/SiO2 and the high temperature calcination of Pt/SbOx, the oxide phases, GeO2 and SbOx, were stable and the selective reduction of ethylacetate to ethanol and the selective oxidation of iso-C4H10 to methacrolein were observed. The high selectivities were ascribed to synergistic interaction between the noble metals and the main group element oxides through the diffusion of adsorbed species and reaction intermediates. The possibility of chemical control of noble metal-catalyses by main group elements is discussed.

Computation of Temperature-Pressure Phase Diagrams of High-Pressure Nitrides

2006 ◽  
Vol 987 ◽  
Author(s):  
Peter Kroll
Keyword(s):  
High Pressure ◽  
High Temperature ◽  
Phase Diagrams ◽  
Noble Metal ◽  
Lower Boundary ◽  
Explicit Scheme ◽  
First Principle ◽  
Fugacity Coefficient ◽  
Pressure Phase ◽  
High Temperature High Pressure

AbstractWe propose an explicit scheme to include the fugacity of nitrogen in computations of phase diagrams of nitride compounds at high-temperature/high-pressure conditions. The assessment is based on available thermochemical data and two kind of extrapolating functions to provide upper and lower boundary for the fugacity coefficient as a funtion of p and T. The procedure is applied to investigate the synthesis of novel nitrides of tantalum, tungsten, and platinum. The combination of first-principle and thermochemical calculations let us predict the synthesis of a new high-pressure phase of Ta3N5 at about 27 GPa. Synthesis of WN2 becomes feasible at about 45 GPa. We furthermore explain why the synthesis of the noble metal subnitride, PtN2, occurs at about 40 GPa, and why PtN is not accessible in high-pressure experiments.

Noble metal catalysts prepared by the high-temperature aerosol decomposition (HTAD) process

1994 ◽  
Vol 21 (1) ◽  
pp. 157-169 ◽  
Author(s):  
William R. Moser ◽  
Jeffery A. Knapton ◽  
Carl C. Koslowski ◽  
Jeffrey R. Rozak ◽  
Richard H. Vezis
Keyword(s):  
High Temperature ◽  
Noble Metal ◽  
Metal Catalysts ◽  
Noble Metal Catalysts
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