On the mechanisms of solid-phase reversible chemical reactions in the MgO—Al2O3—SiO2 system

1998 ◽  
Vol 39 (7-8) ◽  
pp. 291-296 ◽  
Author(s):  
S. M. Logvinkov ◽  
G. D. Semchenko ◽  
D. A. Kobyzeva
Keyword(s):  
Chemical Reactions ◽  
Solid Phase ◽  
Sio2 System

Rate Constant of Solid-Phase Chemical Reactions. Theory

2021 ◽  
pp. 68-131
Author(s):  
V.I. Gol’danskii ◽  
L.I. Trakhtenberg ◽  
V.N. Fleurov
Keyword(s):  
Chemical Reactions ◽  
Rate Constant ◽  
Solid Phase ◽  
Phase Chemical

Sub-micrometric and nanometric solid phases obtained through reductive decomposition reaction of β-cyclodextrin / Β-siklodekstrin indirgeyici bozunma reaksiyonu yoluyla elde edilen alt mikrometrik ve nanometrik katı fazlar

2015 ◽  
Vol 40 (5) ◽  
Author(s):  
Kate Cristina Blanco ◽  
Francisco José dos Santos ◽  
Miguel Jafelicci Júnior ◽  
Mary Helen Palmuti Braga Vettori ◽  
Sandra Mara Martins Franchetti ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Chemical Reactions ◽  
Convenient Method ◽  
Solid Phase ◽  
Low Cost ◽  
Decomposition Reaction ◽  
Reductive Decomposition ◽  
Industrial Use ◽  
Solid Phases

AbstractObjective: Cyclodextrins have been used to catalyze chemical reactions in the synthesis of different materials. The aim of this study is to produce nanoparticles using cyclodextrin as a nanoreactor.Methods: In this study, nanoparticles from the solid phase of iron oxide (FeResults: The images demonstrated that the nanoparticles exhibited a polyhedric shape with a diameter of 100 nm for FeConclusion: Based on this characterization, the proposed technique proved to be an efficient, low-cost, convenient method for the production of sub-micrometric and nanometric solid phases and can likely be scaled up for industrial use. The results demonstrate the possibility of producing nanoparticles using cyclodextrin as a nanoreactor.

Numerical Methods for Simulating the Reduction of Iron Ore in Blast Furnace Shaft

2013 ◽  
Author(s):  
Dong Fu ◽  
Yan Chen ◽  
Chenn Q. Zhou
Keyword(s):  
Blast Furnace ◽  
Chemical Reactions ◽  
Gas Flow ◽  
Iron Ore ◽  
Solid Phase ◽  
Chemical Reactor ◽  
Layer By Layer ◽  
Moving Bed ◽  
Furnace Shaft ◽  
Counter Current

The blast furnace process is a counter-current moving bed chemical reactor to reduce iron oxides to iron, which involves complex transport phenomena and chemical reactions. The iron ore and coke are alternatively charged into the blast furnace, forming a layer by layer structural burden which is slowly descending in the counter-current direction of the ascending gas flow. A new methodology was proposed to efficiently simulate the gas and solid burden flow in the counter current moving bed in blast furnace shaft. The gas dynamics, burden movement, chemical reactions, heat and mass transfer between the gas phase and solid phase are included. The new methodology has been developed to explicitly consider the effects of the layer thickness thermally and chemically in the CFD model.

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