Results 71 to 80 of about 233,674 (199)

Thermodynamics of iron oxide gas-solid reduction based on the minimized Gibbs free energy principle

open access: yes工程科学学报, 2017
A thermodynamic model for gas-solid reduction reactions of iron oxides was established based on the minimized Gibbs free energy principle. On the basis of the model calculation results, the equilibrium diagram for the gas-solid reduction reactions of ...
LI Bin   +3 more
doaj   +1 more source

Rock magnetic and geochemical evidence for authigenic magnetite formation via iron reduction in coal-bearing sediments offshore Shimokita Peninsula, Japan (IODP Site C0020) [PDF]

open access: yes, 2017
Sediments recovered at Integrated Ocean Drilling Program (IODP) Site C0020, in a fore‐arc basin offshore Shimokita Peninsula, Japan, include numerous coal beds (0.3–7 m thick) that are associated with a transition from a terrestrial to marine ...
Clyde, William C.   +6 more
core   +1 more source

Iron Oxide Nanoparticles [PDF]

open access: yes, 2011
Mohammed M. Rahman1, Sher Bahadar Khan1,2, Aslam Jamal3, Mohd Faisal3 and Abdullah M. Aisiri1,2 1The Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 2Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah 3Centre for Advanced Materials and Nano-Engineering (CAMNE), Department of Chemistry ...
Rahman, Mohammed M.   +4 more
openaire   +2 more sources

STRUCTURAL INTERACTION OF LAYERS IN THIN FILM Fe/Tb 2 O 3 [PDF]

open access: yes, 2018
Thin films, consisting of contacting layers of iron group metals Fe, Co, Ni and rare earth metals oxides are perspective for use in spintronics. Due to exchange f–d interaction at them interface, magnetization and magnetoresistance of this d
KARAVAEVA, Valentyna   +4 more
core  

Catalytic Mechanism Studies of Ortho–para H2 Conversion Over Iron Oxide Catalysts

open access: yesEcoEnergy
Hydrogen serves as an ideal clean energy with zero carbon emissions, whereas its large‐scale application relies on its liquidation, by which the catalytic conversion of ortho–para H2 at cryogenic temperature is inevitable with iron oxides as a promising ...
Yusen Chen   +9 more
doaj   +1 more source

Effects of Different Parent Materials and Toposequence on status and distribution of Iron Oxides in Some Soils of Sulaymaniyah Governorate / Iraq

open access: yesThe Iraqi Journal of Agricultural science
Three transects were chosen in Sulaymaniyah governorate / Iraq. The first was located within the Bazian Plain, while the second was in Sulaymaniyah plain, and the third was located within the plain of Shahrazur, in order to study the effect of parent ...
Somaya Alobaidy, Salman Essa
doaj   +1 more source

A Review on the Bulk and Surface Chemistry of Iron in Atmospherically-relevant Systems Containing Humic Like Substances (HULIS) [PDF]

open access: yes, 2015
As the fourth most abundant element by mass in the Earth’s crust, iron is ubiquitous and its chemistry is rich and interdisciplinary in nature. This review synthesizes the current state of knowledge of iron chemistry in multicomponent atmospheric ...
Al-Abadleh, Hind A.
core   +1 more source

Espectroscopia Mössbauer na caracterização de compostos ferrosos em solos e sua relação com retenção de fósforo Mössbauer spectroscopy in the characterization of ferrous compounds in soils and its relationship with phosphorus retention

open access: yesQuímica Nova, 2008
The chemical role of iron-bearing compounds on the dynamics of phosphorus in selected Brazilian latosols was investigated. The iron oxides were characterized in an attempt to assess their main chemical-mineralogical properties influencing the ion ...
Nilton Curi   +3 more
doaj   +1 more source

MSATT Workshop on Chemical Weathering on Mars [PDF]

open access: yes
The topics covered with respect to chemical weathering on Mars include the following: Mars soil, mineralogy, spectroscopic analysis, clays, silicates, oxidation, iron oxides, water, chemical reactions, geochemistry, minerals, Mars atmosphere, atmospheric
Banin, Amos, Burns, Roger
core   +1 more source

Pedogenic iron oxides in soils of the Acre State, Brazil

open access: yesCiência Rural, 2018
: Iron oxides are environmental indicators and influence on physical and chemical behavior of soils. This research aimed to identify and characterize pedogenic iron oxides in soils of the Acre state, Brazil.
Alberto Vasconcellos Inda   +2 more
doaj   +1 more source

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