Hydrogen Evolution and Pickup During the Corrosion of Zirconium Alloys: A Critical Evaluation of the Solid State and Porous Oxide Electrochemistry

2009 ◽  
pp. 222-222-23 ◽  
Author(s):  
N Ramasubramanian ◽  
P Billot ◽  
S Yagnik
Keyword(s):  
Solid State ◽  
Hydrogen Evolution ◽  
Critical Evaluation ◽  
Zirconium Alloys ◽  
Porous Oxide ◽  
Oxide Electrochemistry

scholarly journals Solid state phase transformation kinetics in Zr-base alloys

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
A. R. Massih ◽  
Lars O. Jernkvist
Keyword(s):  
Phase Transformation ◽  
Solid State ◽  
Zirconium Alloys ◽  
Excess Oxygen ◽  
Transformation Kinetics ◽  
Fuel Cladding ◽  
Reactor Accident ◽  
Phase Transformation Kinetics ◽  
Solid State Phase Transformation ◽  
Water Reactors

AbstractWe present a kinetic model for solid state phase transformation ($$\alpha \rightleftharpoons \beta$$ α ⇌ β ) of common zirconium alloys used as fuel cladding material in light water reactors. The model computes the relative amounts of $$\beta$$ β or $$\alpha$$ α phase fraction as a function of time or temperature in the alloys. The model accounts for the influence of excess oxygen (due to oxidation) and hydrogen concentration (due to hydrogen pickup) on phase transformation kinetics. Two variants of the model denoted by A and B are presented. Model A is suitable for simulation of laboratory experiments in which the heating/cooling rate is constant and is prescribed. Model B is more generic. We compare the results of our model computations, for both A and B variants, with accessible experimental data reported in the literature covering heating/cooling rates of up to 100 K/s. The results of our comparison are satisfactory, especially for model A. Our model B is intended for implementation in fuel rod behavior computer programs, applicable to a reactor accident situation, in which the Zr-based fuel cladding may go through $$\alpha \rightleftharpoons \beta$$ α ⇌ β phase transformation.

Scalable Solid-State Synthesis of Highly Dispersed Uncapped Metal (Rh, Ru, Ir) Nanoparticles for Efficient Hydrogen Evolution

2018 ◽  
Vol 8 (31) ◽  
pp. 1801698 ◽  
Author(s):  
Qi Wang ◽  
Mei Ming ◽  
Shuai Niu ◽  
Yun Zhang ◽  
Guangyin Fan ◽  
...  
Keyword(s):  
Solid State ◽  
Hydrogen Evolution ◽  
Solid State Synthesis ◽  
Highly Dispersed

scholarly journals Solid-state synthesis of few-layer cobalt-doped MoS2 with CoMoS phase on nitrogen-doped graphene driven by microwave irradiation for hydrogen electrocatalysis

RSC Advances ◽  
2020 ◽  
Vol 10 (56) ◽  
pp. 34323-34332
Author(s):  
Junpeng Fan ◽  
Joakim Ekspong ◽  
Anumol Ashok ◽  
Sergey Koroidov ◽  
Eduardo Gracia-Espino
Keyword(s):  
Catalytic Activity ◽  
Solid State ◽  
Microwave Irradiation ◽  
Hydrogen Evolution ◽  
Solid State Synthesis ◽  
Nitrogen Doped ◽  
Nitrogen Doped Graphene ◽  
Doped Graphene

Production of nanostructured cobalt-doped MoS2 flakes with the CoMoS phase by microwave irradiation with improved catalytic activity towards hydrogen evolution.

Graphene oxide-mediated scalable preparation of heterostructured MoS2-MoO2/Graphene nanohybrids for efficient energy storage and hydrogen evolution reaction

2021 ◽  
Author(s):  
Sunil P. Lonkar ◽  
Saeed M. Alhassan
Keyword(s):  
Graphene Oxide ◽  
Energy Storage ◽  
Solid State ◽  
Hydrogen Evolution ◽  
Hydrogen Evolution Reaction ◽  
Solvent Free ◽  
Solid State Method ◽  
Efficient Energy ◽  
State Method

A nanostructured hybrid of MoS2-MoO2 and graphene was synthesized by employing a simple in-situ solvent-free strategy. In this solid-state method, the precursors were ball-milled for homogeneous intercalation and distribution, which...

Electroanalytical chemistry for the analysis of solids: Characterization and classification (IUPAC Technical Report)

2012 ◽  
Vol 85 (3) ◽  
pp. 609-631 ◽  
Author(s):  
Antonio Doménech-Carbó ◽  
Jan Labuda ◽  
Fritz Scholz
Keyword(s):  
Solid State ◽  
Present Report ◽  
Critical Evaluation ◽  
Electrochemical Machining ◽  
Mineralogical Composition ◽  
Solid Materials ◽  
Electroanalytical Chemistry ◽  
Structure Information ◽  
Analytical Information ◽  
Materials Used

Solid state electroanalytical chemistry (SSEAC) deals with studies of the processes, materials, and methods specifically aimed to obtain analytical information (quantitative elemental composition, phase composition, structure information, and reactivity) on solid materials by means of electrochemical methods. The electrochemical characterization of solids is not only crucial for electrochemical applications of materials (e.g., in batteries, fuel cells, corrosion protection, electrochemical machining, etc.) but it lends itself also for providing analytical information on the structure and chemical and mineralogical composition of solid materials of all kinds such as metals and alloys, various films, conducting polymers, and materials used in nanotechnology. The present report concerns the relationships between molecular electrochemistry (i.e., solution electrochemistry) and solid state electrochemistry as applied to analysis. Special attention is focused on a critical evaluation of the different types of analytical information that are accessible by SSEAC.

Photocatalytic Hydrogen Evolution over Tantalate Photocatalysts

2006 ◽  
Vol 974 ◽  
Author(s):  
Jaturong Jitputti ◽  
Sorapong Pavasupree ◽  
Yoshikazu Suzuki ◽  
Susumu Yoshikawa
Keyword(s):  
Photocatalytic Activity ◽  
Solid State ◽  
Hydrogen Evolution ◽  
Water Splitting ◽  
Solid State Reaction ◽  
Sem Analysis ◽  
Catalyst Loading ◽  
Distilled Water ◽  
Co Catalyst ◽  
Photocatalytic Hydrogen Evolution

ABSTRACTTantalate and titanate photocatalysts were prepared by solid-state reaction at 1273 K using various ratios of SrCO3, Ta2O5, and TiO2 as starting materials. The prepared solid photocatalysts were characterized using XRD and SEM analysis. These prepared tantalate and titanate photocatalysts showed high photocatalytic H2 evolution activity by water splitting without co-catalyst loading. The highest H2 evolution rate of prepared photocatalysts was found to be 138 μmolh−1 with the starting materials ratio of 2/0.5/1.5 (Sr/Ta/Ti; mol). Furthermore, this photocatalyst showed photocatalytic activity for H2 evolution from distilled water.

Urchin-like Mo2S3 prepared via a molten salt assisted method for efficient hydrogen evolution

2018 ◽  
Vol 54 (90) ◽  
pp. 12714-12717 ◽  
Author(s):  
Xiaowen Zhou ◽  
Wei Zhao ◽  
Jie Pan ◽  
Yuqiang Fang ◽  
Fengyun Wang ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Solid State ◽  
Molten Salt ◽  
Hydrogen Evolution ◽  
Two Dimensional ◽  
Acidic Media ◽  
Solid State Method ◽  
Hydrogen Evolution Reactions ◽  
State Method

Urchin-like Mo2S3 crystals, prepared via a molten salt assisted solid-state method, exhibit better catalytic activity and stability for hydrogen evolution reactions in acidic media compared with the well-known two-dimensional 2H-MoS2 and 1T′-MoS2.

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