The Role of Electrical and Volume Transport in Heterogeneous Reaction Systems

1975 ◽  
Vol 30 (1-2) ◽  
pp. 127-128
Author(s):  
E. Kahrig ◽  
H. Beßerdich ◽  
E. Brecht ◽  
D. Kirstein
Keyword(s):  
Kinetic Parameters ◽  
Electrical Transport ◽  
Heterogeneous Reaction ◽  
Volume Transport ◽  
Concentration Profiles ◽  
Reaction Systems ◽  
Transport Measurements

Abstract For autocatalysis coupled with diffusion the local periodic concentration profiles are influenced essentially by electrical transport and convection. When diffusion is negligible for Michaelis-Menten-kinetics equations are given to determine the kinetic parameters Vmax and Km from transport measurements.

Role of nanomaterial's as adsorbent for heterogeneous reaction in waste water treatment

2021 ◽  
pp. 130596
Author(s):  
M. Sridevi ◽  
C. Nirmala ◽  
N. Jawahar ◽  
G. Arthi ◽  
Sugumari Vallinayagam ◽  
...  
Keyword(s):  
Waste Water ◽  
Water Treatment ◽  
Heterogeneous Reaction ◽  
Waste Water Treatment

Four-probe electrical transport measurements on individual metallic nanowires

2007 ◽  
Vol 18 (6) ◽  
pp. 065204 ◽  
Author(s):  
A S Walton ◽  
C S Allen ◽  
K Critchley ◽  
M Ł Górzny ◽  
J E McKendry ◽  
...  
Keyword(s):  
Electrical Transport ◽  
Metallic Nanowires ◽  
Transport Measurements

Spectral quasi-linearization method for Casson fluid with homogeneous heterogeneous reaction in presence of nonlinear thermal radiation over an exponential stretching sheet

2019 ◽  
Vol 15 (2) ◽  
pp. 398-417 ◽  
Author(s):  
Subrata Das ◽  
Hiranmoy Mondal ◽  
Prabir Kumar Kundu ◽  
Precious Sibanda
Keyword(s):  
Entropy Generation ◽  
Stretching Sheet ◽  
Heterogeneous Reaction ◽  
Casson Fluid ◽  
Linearization Method ◽  
Concentration Profiles ◽  
Brinkman Number ◽  
Content Type ◽  
Exponential Stretching ◽  
Exponential Stretching Sheet

PurposeThe focus of the paper is only on the contributions toward the use of entropy generation of non-Newtonian Casson fluid over an exponential stretching sheet. The purpose of this paper is to investigate the entropy generation and homogeneous–heterogeneous reaction. Velocity and thermal slips are considered instead of no-slip conditions at the boundary.Design/methodology/approachBasic equations in form of partial differential equations are converted into a system of ordinary differential equations and then solved using the spectral quasi-linearization method (SQLM).FindingsThe validity of the model is established using error analysis. Variation of the velocity, temperature, concentration profiles and entropy generation against some of the governing parameters are presented graphically. It is to be noted that the increase in entropy generation due to increase in heterogeneous reaction parameter is due to the increase in heat transfer irreversibility. It is further noted that the Bejan number decreases with Brinkman number because increase in Brinkman number reduces the total entropy generation.Originality/valueThis paper acquires realistic numerical explanations for rapidly convergent temperature and concentration profiles using the SQLM. Convergence of the numerical solutions was monitored using the residual error of the PDEs. The resulting equations are then integrated using the SQLM. The influence of emergent flow, heat and mass transfer parameters effects are shown graphically.

scholarly journals On Stereocontrol in Organocatalytic α-Chlorinations of Aldehydes

2021 ◽  
Author(s):  
Sebastian Ponath ◽  
Chetan Joshi ◽  
Amy T. Merrill ◽  
Volker Schmidts ◽  
Kim Greis ◽  
...  
Keyword(s):  
Ion Mobility ◽  
Resting State ◽  
Comprehensive Analysis ◽  
Ion Mobility Mass Spectrometry ◽  
Concentration Profiles ◽  
Nmr Studies ◽  
Isotope Studies ◽  
Configuration And Conformation

A comprehensive analysis of the organocatalytic α‐chlorination of aldehydes with N‐chloroimides and differ‐ ent catalysts is presented. For this reaction, alternate mechanisms were proposed that differ in the role of resting state intermediates and the rationalization of the observed enantioselectivity. This manuscript aims at resolving these funda‐ mental questions on the basis of rigorous structural characterization of intermediates (configuration and conformation), NMR studies, ion mobility‐mass spectrometry, concentration profiles, isotope studies, and DFT calculations. <br>

scholarly journals Electrical transport measurements for superconducting sulfur hydrides using boron-doped diamond electrodes on beveled diamond anvil

2020 ◽  
Vol 33 (12) ◽  
pp. 124005
Author(s):  
Ryo Matsumoto ◽  
Mari Einaga ◽  
Shintaro Adachi ◽  
Sayaka Yamamoto ◽  
Tetsuo Irifune ◽  
...  
Keyword(s):  
Electrical Transport ◽  
Diamond Electrodes ◽  
Boron Doped Diamond ◽  
Boron Doped ◽  
Transport Measurements ◽  
Diamond Anvil

Simulation of Heterogeneous Reaction Systems

1996 ◽  
pp. 265-278 ◽  
Author(s):  
F. Behrendt ◽  
O. Deutschmann ◽  
B. Ruf ◽  
R. Schmidt ◽  
J. Warnatz
Keyword(s):  
Heterogeneous Reaction ◽  
Reaction Systems
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