A thermochemical approach to the gas-phase reduction of metal sulphates

1978 ◽  
Vol 13 (11) ◽  
pp. 2413-2417 ◽  
Author(s):  
Ashok K. Vijh
Keyword(s):  
Gas Phase ◽  
Phase Reduction ◽  
Metal Sulphates

scholarly journals Plasmonic photocatalysis applied to solar fuels

2019 ◽  
Vol 214 ◽  
pp. 417-439 ◽  
Author(s):  
Steven Bardey ◽  
Audrey Bonduelle-Skrzypczak ◽  
Antoine Fécant ◽  
Zhenpeng Cui ◽  
Christophe Colbeau-Justin ◽  
...  
Keyword(s):  
Gas Phase ◽  
Solar Fuels ◽  
Hot Electron ◽  
Phase Reduction ◽  
The Impact

We show the impact of structural, chemical and interfacial features of gold–titania composites on solar and visible photocatalytic gas phase reduction of CO2 and the specificities of the hot electron-based process.

scholarly journals CONVERSION OF URANIUM CHLORIDES TO URANIA BY GAS-PHASE REDUCTION HYDROLYSIS.

1967 ◽  
Author(s):  
F. H. Patterson ◽  
W. C. Robinson, Jr. ◽  
C. F. Leitten, Jr.
Keyword(s):  
Gas Phase ◽  
Phase Reduction

scholarly journals Combining gas phase electron capture and IRMPD action spectroscopy to probe the electronic structure of a metastable reduced organometallic complex containing a non-innocent ligand

2015 ◽  
Vol 17 (39) ◽  
pp. 25689-25692 ◽  
Author(s):  
Madanakrishna Katari ◽  
Eleonore Payen de la Garanderie ◽  
Edith Nicol ◽  
Vincent Steinmetz ◽  
Guillaume van der Rest ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Ir Spectroscopy ◽  
Gas Phase ◽  
Electron Capture ◽  
Organometallic Complex ◽  
Action Spectroscopy ◽  
Phase Reduction ◽  
Incoming Electron

Gas-phase reduction of a Zn(ii) complex followed by IR spectroscopy shows that the incoming electron is localized on the metal rather than on the ligand.

Investigation of the process of metallized materials production from iron concentrate of hydrometallurgical enrichment of ferromanganese ores of Kuzbass

2021 ◽  
Vol 77 (6) ◽  
pp. 665-674
Author(s):  
O. I. Nokhrina ◽  
I. D. Rozhikhina ◽  
M. A. Golodova ◽  
I. E. Khodosov
Keyword(s):  
Experimental Study ◽  
Gas Phase ◽  
Solid Phase ◽  
Thermodynamic Simulation ◽  
Reducing Agents ◽  
Reducing Agent ◽  
Isothermal Exposure ◽  
Iron Concentrate ◽  
Phase Reduction ◽  
Reduction Of Iron

Study of the processes of solid-phase reduction of iron from oxides using coals as reducing agents and the development of energy-efficient technologies for the production and use of metallized materials from concentrates obtained as a result of hydrometallurgical enrichment is an actual scientific direction in ferrous metallurgy. Theoretical studies of the processes of solidphase reduction of iron from iron-containing concentrate obtained as a result of hydrometallurgical enrichment of ferromanganese and polymetallic manganese-containing ores, by coals grades D (long-flame) and 2B (brown) were carried out by the method of thermodynamic simulation using the “Terra” software complex. The experimental study of the process of solid-phase reduction of iron from experimental mixtures was carried out in a muffle furnace SNOL 4/900 and in a resistance furnace with a graphite tubular heater (Tamman furnace). The influence of the composition and volume of gas phase, formed as a result of volatile components emission in the process of coals of two grades heating at 373–1873 K obtained, optimal temperature and consumption of coals defined, which ensure complete reducing of iron from iron-containing concentrate, compositions as well as volumes of gas phase. The influence of temperature of the isothermal exposure on the rate and degree of solid-phase reduction of iron from iron ore oxides was experimentally determined when using coals of different process grades and coke fines as reducing agents. Empirical equations of reduction degree versus time of isothermal exposure for different metallization temperatures were obtained. It is shown that the change in the degree of recovery on temperature with high accuracy was described by a linear dependence, and the change in the recovery rate on the temperature – by a power dependence. Conditions of effective metallization were determined when using iron concentrate and coals of different process grades for production of spongy metallized materials with content of Femet more than 80%, and 1.5–2.5 % C, 0.1 % S, 0.02 % P. As a result of thermodynamic simulation and experimental study of the process of iron reduction from iron concentrate, optimal consumption of coal of grades D and 2Б at temperature 1473K was determined. It was established that the best reducing agent with a minimum specific consumption is long-flame coal grade D. It was found that with an excess of reducing agent, it is possible to achieve almost complete extraction of iron from the concentrate, at the level of 98–99%.

Bench Scale Production of Pure Nanocrystalline Molybdenum Nitride Through Solid-Gas Phase Reduction

2012 ◽  
Vol 12 (12) ◽  
pp. 9230-9233 ◽  
Author(s):  
R. Aghababazadeh ◽  
A. R. Mirhabibi ◽  
S. Pilehvari ◽  
R. Brydson
Keyword(s):  
Gas Phase ◽  
Molybdenum Nitride ◽  
Scale Production ◽  
Bench Scale ◽  
Phase Reduction

The Active Sites of Manganese- and Cobalt-Containing Catalysts in the Selective Gas Phase Reduction of Nitrobenzene

1994 ◽  
Vol 149 (2) ◽  
pp. 356-363 ◽  
Author(s):  
A. Maltha ◽  
H.F. Kist ◽  
B. Brunet ◽  
J. Ziolkowski ◽  
H. Onishi ◽  
...  
Keyword(s):  
Gas Phase ◽  
Active Sites ◽  
Phase Reduction

O-Atom Transport Catalysis by Atomic Cations in the Gas Phase:  Reduction of N2O by CO

2005 ◽  
Vol 127 (10) ◽  
pp. 3545-3555 ◽  
Author(s):  
Voislav Blagojevic ◽  
Galina Orlova ◽  
Diethard K. Bohme
Keyword(s):  
Gas Phase ◽  
Phase Reduction
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