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Displaying 251 - 275 of 1646

Reversible CO2 Hydrogenation, Neutron Crystallography, and Hydride Reactivity of a Triiridium Heptahydride Complex

April 1, 2025
Author(s)
Valeriy Cherepakhin, Van K. Do, Anthony J. Chavez, Jacob Kelber, Ryan Klein, Eric Novak, Yongqiang Cheng, Xiaoping Wang, Craig Brown, Travis J. Williams
… and even CF3SO3D, they find that complex 2-H catalyzes hydrogenation of CO2 to formate (TONIr = 9600) and reverse formic acid dehydrogenation (TONIr = 54 400). The hydrogenation operates via a reactive intermediate … inelastic neutron scattering, hydrogen carrier, CO2 hydrogenation, formic acid dehydrogenation …

Modelling the test methods used to determine material compatibility for hydrogen pressure vessel service

October 16, 2019
Author(s)
Christopher P. Looney, Matthew J. Connolly, Peter E. Bradley, Andrew J. Slifka, Robert L. Amaro
… strength higher than 950 MPa is to be approved for gaseous hydrogen service outside of the United States, the vessel … Contents standard. The specific section of interest for hydrogen service is ISO-11114-4, Test Methods for Selecting Steels Resistant to Hydrogen Embrittlement. The ISO standard allows the use of …

Ethoxylated Bisphenol Dimethacrylate-Based Amorphous Calcium Phosphate Composites

January 1, 2006
Author(s)
Drago Skrtic, Joseph M. Antonucci, D W. Liu
… and mechanical properties of amorphous calcium phosphate composites has been the focus of our recent … amorphous calcium phosphate, biaxial flexure strength, degree of vinyl … Bisphenol Dimethacrylate-Based Amorphous Calcium Phosphate Composites …

PROMOTION OR INHIBITION OF HYDROGEN-AIR IGNITION BY IRON-CONTAINING COMPOUNDS

July 1, 2008
Author(s)
Gregory T. Linteris
… The ignition of stoichiometric and fuel-lean hydrogen-air mixtures near 1000 K was studied, for varying … of iron pentacarbonyl promotes or inhibits the ignition of hydrogen/air mixtures. The simulations show that iron … Hydrogen, fire safety, ignition, contaminants, iron …

Adhesion of Amorphous Calcium Phosphate Composites Bonded to Dentin: A Study in Failure Modality

December 23, 2008
Author(s)
Justin N. O'Donnell, Gary E. Schumacher, Joseph M. Antonucci, Drago Skrtic
… Fillers consisted of as-made and milled amorphous calcium phosphate (am-ACP and m-ACP, respectively), and a … amorphous calcium phosphate, failure mode, polymerization shrinkage stress, … Adhesion of Amorphous Calcium Phosphate Composites Bonded to Dentin: A Study in Failure …

Lithiated Primary Amine-A New Material for Hydrogen Storage

May 26, 2014
Author(s)
Juner Chen, Hui Wu, Guotao Wu, Zhitao Xiong, Ruiming Wang, Hongjun Fan, Wei Zhou, Bin Liu, Yongshen Chua, Xiahua Ju, Ping Chen
… of 150-250 Degree}C., showing potentials as a new type of hydrogen storage material. Structural analysis and … Dehydrogenation, lithiated amine, Crystal structure, hydrogen storage … Lithiated Primary Amine-A New Material for Hydrogen Storage …

Atomic Hydrogen for the Formation of Abrupt Sb Doping Profiles in MBE-Grown Si

May 1, 1998
Author(s)
P E. Thompson, C Silvestre, M E. Twigg, G Jernigan, David S. Simons
… Previously atomic hydrogen has been shown to be effective in reducing the … epitaxygrowth. In this work we have investigated atomic hydrogen to determine if it is equally effective in reducing … we demonstrated that the co-deposition of atomic hydrogen during Sb doping of Si at 500 C reduced the surface …

A Microwave Study of Hydrogen-Transfer-Triggered Methyl-Group Rotation in 5-Methyltropolone

November 10, 2010
Author(s)
Vadim V. Ilyushin, Emily A. Cloessner, Yung-Ching Chou, Laura B. Picraux, Jon T. Hougen, Richard Lavrich
… as a 7-membered aromatic carbon ring with a five-membered hydrogen-bonded cyclic structure at the top and a methyl … exhibits two large-amplitude motions, an intramolecular hydrogen transfer and a methyl torsion. The former motion is particularly interesting because transfer of the hydrogen atom from the hydroxyl to the carbonyl group induces …

Noble-Metal-Free Ni-W-O-Derived Catalysts for High-Capacity Hydrogen Production from Hydrazine Monohydrate

April 13, 2020
Author(s)
Qing Shi, Deng-Xue Zhang, Hui Yin, Yu-Ping Qiu, Liang-Liang Zhou, Chen Chen, Hui Wu, Ping Wang
… render hydrazine monohydrate (N 2 H 4 .H 2 O) viable as a hydrogen carrier. Herein, we report a detailed study on … stability towards N 2 H 4 .H 2 O decomposition for hydrogen production. Significantly, this noble-metal-free catalyst enables rapid hydrogen production from commercially available N 2 H 4 .H 2 …

Effects of Al-Si Coating and Zn Coating on the Hydrogen Uptake and Embrittlement of Ultra-High Strength Press-Hardened Steel

September 25, 2019
Author(s)
Kyoung Rae Jo, Lawrence Cho, Dimas H. Sulistiyo, Eun Jung Seo, Seong Woo Kim, Bruno C. De Cooman
… automotive safety-related structure parts, is sensitive to hydrogen embrittlement due to its martensitic microstructure. Hydrogen is introduced in PHS during the hot press forming … by an atmospheric corrosion process. In this study, the hydrogen embrittlement behavior of uncoated, aluminized, and …

Direct Measurement of Hydrogen Diffusivity and Solubility Limits in Zircaloy 2 (Formula Unit of ZrH 0.0155 ) using Incoherent Quasi-Elastic Neutron Scattering

May 1, 2019
Author(s)
Brent J. Heuser, Timothy R Prisk, Jun-li Lin, Tanya J. Dax, Yongfeng Zhang
… The diffusivity of hydrogen is an important property of light water nuclear reactor (LWR) fuel cladding. LWR cladding absorbs hydrogen during normal operation, a contributing factor to … that decreases the lifetime of the fuel. Mass transport of hydrogen is dictated by an Arrhenius behavior typical of …

Moldable Composite Bone Grafts Consisting of Calcium Phosphate Cement and Biodegradable Polymer Microspheres: Mechanical Properties and Controlled Release of Bioactive Molecules

January 1, 2002
Author(s)
C A. Khatri, J F. Hsii, Francis W. Wang
… resorbable, composite bone grafts made of calcium phosphate cement (CPC) and poly(d,l-lactide-co-glycolide) … biodegradable polymers, bone graft composite, calcium phosphate … Moldable Composite Bone Grafts Consisting of Calcium Phosphate Cement and Biodegradable Polymer Microspheres: …

Intermolecular Potential and Second Virial Coefficient of the Water-Hydrogen Complex

January 1, 2004
Author(s)
M P. Hodges, R J. Wheatley, G K. Schenter, Allan H. Harvey
… (5-dimensional) potential-energy surface for the water-hydrogen complex using scaled perturbation theory (SPT). An … are found: the global miniumum has C 2v symmetry, with the hydrogen molecule action as a proton donor to the oxygen atom … aqueous systems, hydrogen, intermolecular potential, second virial …

Mapping Protein-Ligand Interactions with Proteolytic-Digestion, Hydrogen/Deuterium Exchange-Mass Spectrometry

October 23, 2015
Author(s)
Jeffrey W. Hudgens, Elyssia S. Gallagher
… (MS) can measure the change of mass associated with the hydrogen-deuterium exchange (HDX). Protein-ligand interactions reduce or enhance the hydrogen exchange rates of the amide protons, and the … This tutorial outlines the fundamental theory governing hydrogen exchange, provides practical information regarding …

Hydrogen Cyanide H 13 C 14 N Absorption Reference for 1530 nm to 1560 nm Wavelength Calibration SRM 2519

November 1, 1998
Author(s)
Sarah L. Gilbert, William C. Swann, Chih-Ming Wang
… is an optical-fiber-coubled absorption cell containing hydrogen cyanide (H 13 C 14 N) gas. Hydrogen cyanide has more than 50 accurately measured … absorption cell, hydrogen cyanide (H 13 C 14 N), hydrogen cyanide (H 13 C 14 N) gas, optical-fiber, Standard … Hydrogen Cyanide H 13 C 14 N Absorption Reference for 1530 nm …

Moldable, Resorbable, Composite Bone Grafts Consisting of Calcium Phosphate Cement and Polymeric Microspheres: Mechanical Properties, Degradation Kinetics and Release of Bioactive Molecules

October 16, 2008
Author(s)
Francis W. Wang, C A. Khatri, J F. Hsii, S Hirayama, Shozo Takagi
… resorbable, composite bone grafts made of calcium phosphate cement (CPC) and poly(d,l-lactide-co-glycolide) … biodegradable polymers, bone graft composite, calcium phosphate … Resorbable, Composite Bone Grafts Consisting of Calcium Phosphate Cement and Polymeric Microspheres: Mechanical …

Hydrogen Field Test Standard: Laboratory Performance

April 14, 2014
Author(s)
Jodie G. Pope, John D. Wright
… and measures inspectors to periodically test retail hydrogen dispensers, much as gasoline dispensers are tested … hydrogen dispenser, field test … Hydrogen Field Test Standard: Laboratory Performance …

Selective Ethane/Ethylene Separation in a Robust Microporous Hydrogen-Bonded Organic Framework

January 8, 2020
Author(s)
Xu Zhang, Libo Li, Jia-Xin Wang, Hui-Min Wen, Rajamani Krishna, Hui Wu, Wei Zhou, Zhong-Ning Chen, Bin Li, Guodong Qian, Banglin Chen
… efficient C 2 H 6 /C 2 H 4 separation in the emerging hydrogen-bonded organic frameworks (HOFs) due to the weak nature of hydrogen bonds. We herein report the benchmark example of a … Porous materials, Gas separation, Hydrogen bonding … Ethane/Ethylene Separation in a Robust Microporous Hydrogen-Bonded Organic Framework …

Fine-tuning of polymeric resins and their interfaces with amorphous calcium phosphate. A strategy for designing effective remineralizing dental composites

September 29, 2010
Author(s)
Joseph M. Antonucci, Drago Skrtic
… remineralizing composites based on amorphous calcium phosphate (ACP) fillers embedded in polymerized methacrylate … adhesion, amorphous calcium phosphate, degree of vinyl conversion, mechanical strength, … resins and their interfaces with amorphous calcium phosphate. A strategy for designing effective remineralizing …

Development of Potential Organic-Molecule-Based Hydrogen Storage Materials: Converting C-N Bond-Breaking Thermolysis of Guanidine to N-H Bond-Breaking Dehydrogenation

September 8, 2016
Author(s)
Xiuquan Zhou, Wei Zhou, Terrence J. Udovic, Taner N. Yildirim, John J. Rush, Efrain E. Rodriguez, Hui Wu
… International Journal of Hydrogen Energy … determination, endothermic dehydrogenation, guanidine, hydrogen storage, metal guanidinates, neutron vibrational … Development of Potential Organic-Molecule-Based Hydrogen Storage Materials: Converting C-N Bond-Breaking …
Displaying 251 - 275 of 1646
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