Results 81 to 90 of about 19,382 (232)
Single-charge devices with ultrasmall Nb/AlOx/Nb trilayer Josephson junctions
, 2004 Josephson junction transistors and 50-junction arrays with linear junction dimensions from 200 nm down to 70 nm were fabricated from standard Nb/AlOx/Nb trilayers.
A. B. Zorin +4 more
core +1 more source
Anelastic relaxor behavior of Pb(Mg1/3Nb2/3)O3 [PDF]
, 2013 Elastic storage modulus and loss of relaxor lead magnesium niobate ceramics, Pb(Mg1/3Nb2/3)O3, have been measured with dynamic mechanical analyzer in single cantilever mode in the temperature range from 170 K to 320 K and at frequencies from 0.1 Hz to 50
Damjanovic, Dragan, Ursic, Hana
core +2 more sources
Photothermal CO2 Hydrogenation: Reactions, Mechanisms, and Catalyst Design
Carbon Energy, EarlyView.Reactions, mechanisms, and catalyst design for photothermal CO2 hydrogenation. ABSTRACT Photothermal CO2 hydrogenation has attracted extensive attention because it provides a green and sustainable approach to fuel and chemicals production. The photothermal catalyst plays a critical role in CO2 conversion through a range of reactions.
Shuai Yan +15 more
wiley +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Graphical abstract illustrating the niobic acid precipitation process applied and the product obtained. Abstract This study investigates the precipitation of niobic acid (Nb2O5.nH2O) from potassium niobate solution with addition of sulphuric acid, and its subsequent thermal conversion into niobium oxide (Nb2O5). Thermodynamic modelling with PHREEQC and
Cássia R. Souza +4 more
wiley +1 more source
Harnessing Support‐Dependent Hydrogen Spillover for Ni‐Based CO2 Hydrogenation
Angewandte Chemie, Volume 138, Issue 19, 4 May 2026.Hydrogen spillover can be harnessed for Ni‐based CO2 hydrogenation via support‐dependent pathways. Hydrogen spillover propagating to surfaces promotes catalysis through two distinct mechanisms. On moderately reducible supports, it rapidly removes poisoning oxygen species (*O) from Ni nanoparticles.
Kazuki Shun +3 more
wiley +2 more sources
SRF Cavity Fabrication and Materials
, 2015 The technological and metallurgical requirements of material for highgradient superconducting cavities are described. High-purity niobium, as the preferred metal for the fabrication of superconducting accelerating cavities, should meet exact ...
Singer, W
core +1 more source
The Canadian Journal of Chemical Engineering, EarlyView.Schematic of the CO adsorption process in a fixed‐bed column containing pure NaY zeolite and Nb‐modified NaY (NaY–5%Nb). On the left, breakthrough curves and temperature profiles highlight the dynamic performance and thermal effects during CO adsorption.
Elson Oliveira +3 more
wiley +1 more source
Nb2O5-doped BaTiO3 semiconductor
, 1996 Semiconducting Nb2O5-doped BaTiO3 was prepared and characterized by X-ray diffraction, electron microscopy, thermogravimetry, and electrical measurements. The addition of the Nb2O5 donor dopant does not affect the sequence of chemical reactions during the synthesis of the ceramic material.
Belous A., G., V'yunov O., I.
openaire +1 more source
EcoEnergy, EarlyView.This review summarizes the synergistic effects of mixed impurities on ammonia‐selective catalytic reduction (NH3‐SCR) catalysts, including the poisoning mechanism of the catalyst caused by mixed impurities, the antagonistic effects between the impurities, and the research on the anti‐poisoning strategies for the catalyst in recent years.
Hongyan Xue +3 more
wiley +1 more source
Estudio cinético de la hidrogenación de trans-cinamaldehído sobre catalizadores de Ir/Nb2O5
Revista Facultad de Ingeniería Universidad de Antioquia, 2010 Se estudió la hidrogenación de trans-cinamaldehído sobre catalizadores de Ir/Nb2O5 reducidos en atmósfera de hidrógeno a 473 K (LTR) y a 773 K (HTR). Los catalizadores se caracterizaron por adsorción de N2 a 77 K, quimisorción de H2 a 298 K, TPR y TPD ...
Hugo Alfonso Rojas Sarmiento +2 more
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