scholarly journals An automated flow platform for accurate determination of gas–liquid–solid reaction kinetics

2020 ◽  
Vol 5 (9) ◽  
pp. 1751-1758
Author(s):  
Xiaonan Duan ◽  
Jiacheng Tu ◽  
Andrew R. Teixeira ◽  
Le Sang ◽  
Klavs F. Jensen ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Accurate Determination ◽  
Packed Bed ◽  
Packed Bed Reactor ◽  
Solid Reaction ◽  
Hydrogenation Reactions ◽  
Kinetics Of

An automated flow platform based on a tube-in-tube contactor and micro-packed bed reactor is developed to measure the kinetics of gas–liquid–solid hydrogenation reactions.

Fast Gas-Solid Reaction Kinetics of Nanoparticles Unveiled by Millisecond In Situ Electron Diffraction at Ambient Pressure

2018 ◽  
Vol 57 (35) ◽  
pp. 11344-11348 ◽  
Author(s):  
Jian Yu ◽  
Wentao Yuan ◽  
Hangsheng Yang ◽  
Qiang Xu ◽  
Yong Wang ◽  
...  
Keyword(s):  
Electron Diffraction ◽  
Reaction Kinetics ◽  
Ambient Pressure ◽  
Solid Reaction ◽  
Kinetics Of ◽  
Gas Solid Reaction

scholarly journals Mechanism of reaction of silica and carbon for producing silicon carbide

2019 ◽  
Vol 45 ◽  
pp. 146867831989141
Author(s):  
Bahador Abolpour ◽  
Rahim Shamsoddini
Keyword(s):  
Experimental Data ◽  
Silicon Carbide ◽  
Reaction Kinetics ◽  
Direct Effect ◽  
Solid Reaction ◽  
Carbon Reduction ◽  
Temperature Range ◽  
Carbon Particles ◽  
Mechanism Of Reaction ◽  
Kinetics Of

The reaction kinetics of carbon reduction of silica were investigated using thermodynamic concepts and by fitting to relevant models the experimental data obtained for this reduction using a thermogravimetric unit in the temperature range of 1566 to 1933 K. The results show that the only way to produce SiC in this reduction is the reaction of Si, SiO, or SiO2 at the surface or by diffusion of SiO inside the carbon particles while CO and CO2 have no direct effect on the process. The controlling step of this reduction at temperatures lower than 1750 K is the chemical gas–solid or solid–solid reaction at the surface of the carbon particles, while at higher temperatures, the rate of SiO diffusing inside the carbon particles controls the rate of this reduction.

Application of biofilm kinetics to the sulfur/lime packed bed reactor for autotrophic denitrification of groundwater

1998 ◽  
Vol 37 (9) ◽  
pp. 97-104 ◽  
Author(s):  
Zhishi Wang
Keyword(s):  
Packed Bed ◽  
Physical Characteristics ◽  
Packed Bed Reactor ◽  
Experimental Investigations ◽  
Autotrophic Denitrification ◽  
Kinetics Of

To evaluate the engineering feasibility of autotrophic denitrification, a program of theoretical and experimental investigations of the granular sulfur/lime packed bed autotrophic denitrification system was planned and completed. This program evaluated the stoichiometric, kinetic and physical characteristics of the process. This paper will focus on the results of that project which are concerned with the kinetics of autotrophic denitrification of groundwater.

scholarly journals Application of a multiphase microreactor chemostat for the determination of reaction kinetics of Staphylococcus carnosus

2019 ◽  
Vol 42 (6) ◽  
pp. 953-961 ◽  
Author(s):  
S. Lladó Maldonado ◽  
J. Krull ◽  
D. Rasch ◽  
P. Panjan ◽  
A. M. Sesay ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Staphylococcus Carnosus ◽  
Kinetics Of

scholarly journals Determination of Carbonation/Calcination Reaction Kinetics of a Limestone Sorbent in low CO2 Partial Pressures Using TGA Experiments

2017 ◽  
Vol 114 ◽  
pp. 259-270 ◽  
Author(s):  
Mohammad Ramezani ◽  
Priscilla Tremain ◽  
Elham Doroodchi ◽  
Behdad Moghtaderi
Keyword(s):  
Reaction Kinetics ◽  
Low Co2 ◽  
Partial Pressures ◽  
Kinetics Of

Automated methods for accurate determination of the critical velocity of packed bed chromatography

2012 ◽  
Vol 28 (3) ◽  
pp. 740-745 ◽  
Author(s):  
Yu-Chih Chang ◽  
Spyridon Gerontas ◽  
Nigel J. Titchener-Hooker
Keyword(s):  
Critical Velocity ◽  
Accurate Determination ◽  
Packed Bed ◽  
Automated Methods

Reactive Diffusion upon Planar Dissolving Copper in Solder Melts

2011 ◽  
Vol 309-310 ◽  
pp. 127-134 ◽  
Author(s):  
Jaromír Drápala ◽  
Pavel Jopek ◽  
Daniel Petlák ◽  
Petr Harcuba ◽  
Petr Kubíček
Keyword(s):  
Interphase Boundary ◽  
Time Course ◽  
Solid Phase ◽  
Accurate Determination ◽  
Theoretical Description ◽  
Reactive Diffusion ◽  
Boundary Movement ◽  
Original Metal ◽  
Kinetics Of

Problems of reactive diffusion at a solid phase - melt contact were studied theoretically. The main intention was to calculate the time course of the solid phase dissolving in the case of planar dissolving. In our work we give heed especially to the dominating process, which is the solid metal A dissolving in solder melt B. During the dissolving, melt B saturates with metal A, and the process is influenced by convections which are characteristic for a given experimental configuration. A theoretical description of the kinetics of solid phase dissolving in the melt will be presented for the case of planar dissolving. The aim is to derive a relation for the interphase boundary movement (t) depending on time and a time course of growth of the element A concentration in the melt B. There are difficulties in accurate determination of the interphase boundary movement after heating of specimens for certain time intervals. It should be performed experimentally, since intermetallic phases are formed in original metal A both via diffusion and upon cooling and some phases segregate upon cooling of the solidifying melt. The main intention was to study experimentally the copper dissolving in melts of various solder alloys and the related reactive diffusion. We used pure Sn and Sn-Cu, Sn-Ag-Cu, Sn-Sb, Sn-Zn alloys as solder materials. Experiments aimed at the study of a Cu plate dissolving in the solder melt were carried out at various selected temperatures and times. The problems of reactive diffusion were studied both theoretically and experimentally and the problems that have to be solved preferably were emphasized. Concentration profiles of elements and thickness of layers of phases can be determined with SEM and X-ray microanalyses (WDX, EDX) of specimens after their diffusion heating.

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