scholarly journals Electrocatalysis of hydrogen peroxide reactions on perovskite oxides: experiment versus kinetic modeling

2014 ◽  
Vol 16 (27) ◽  
pp. 13595-13600 ◽  
Author(s):  
T. Poux ◽  
A. Bonnefont ◽  
A. Ryabova ◽  
G. Kéranguéven ◽  
G. A. Tsirlina ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Model ◽  
Kinetic Modeling ◽  
Perovskite Oxides ◽  
Experiment Versus

A kinetic model sheds light on the mechanism of the hydrogen peroxide reactions on Mn- and Co-perovskite oxides.

scholarly journals Advanced Kinetic Modeling of Bio-co-polymer Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Production Using Fructose and Propionate as Carbon Sources

Processes ◽  
2021 ◽  
Vol 9 (8) ◽  
pp. 1260
Author(s):  
Stefanie Duvigneau ◽  
Robert Dürr ◽  
Jessica Behrens ◽  
Achim Kienle
Keyword(s):  
Kinetic Model ◽  
Kinetic Modeling ◽  
Feed Rate ◽  
Raw Materials ◽  
Carbon Sources ◽  
Exhaust Gas ◽  
Current Yield ◽  
Promising Alternative ◽  
Parameter Variations ◽  
Online Measurements

Biopolymers are a promising alternative to petroleum-based plastic raw materials. They are bio-based, non-toxic and degradable under environmental conditions. In addition to the homopolymer poly(3-hydroxybutyrate) (PHB), there are a number of co-polymers that have a broad range of applications and are easier to process in comparison to PHB. The most prominent representative from this group of bio-copolymers is poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). In this article, we show a new kinetic model that describes the PHBV production from fructose and propionic acid in Cupriavidus necator (C. necator). The developed model is used to analyze the effects of process parameter variations such as the CO2 amount in the exhaust gas and the feed rate. The presented model is a valuable tool to improve the microbial PHBV production process. Due to the coupling of CO2 online measurements in the exhaust gas to the biomass production, the model has the potential to predict the composition and the current yield of PHBV in the ongoing process.

Kinetic modeling and mechanistic investigations of transesterification of propylene carbonate with methanol over an Fe–Mn double metal cyanide catalyst

2020 ◽  
Vol 5 (1) ◽  
pp. 101-111
Author(s):  
Ziwei Song ◽  
Bala Subramaniam ◽  
Raghunath V. Chaudhari
Keyword(s):  
Experimental Data ◽  
Kinetic Model ◽  
Propylene Carbonate ◽  
Kinetic Modeling ◽  
Reaction Parameters ◽  
Metal Cyanide ◽  
Wide Range ◽  
Mechanistic Investigations ◽  
Activation Sequence

A kinetic model involving the activation sequence of reactants PC, methanol and an intermediate provides the best description of the experimental data with respect to reaction parameters over a wide range of conditions.

scholarly journals Accelerating Kinetic Parameter Identification by Extracting Information from Transient Data: A Hydroprocessing Study Case

Catalysts ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 361
Author(s):  
Ngoc-Yen-Phuong Cao ◽  
Benoit Celse ◽  
Denis Guillaume ◽  
Isabelle Guibard ◽  
Joris W. Thybaut
Keyword(s):  
Steady State ◽  
Experimental Design ◽  
Kinetic Model ◽  
Kinetic Modeling ◽  
Sufficient Data ◽  
Design Algorithm ◽  
State Data ◽  
Transient Data ◽  
Study Case ◽  
The One

Hydroprocessing reactions require several days to reach steady-state, leading to long experimentation times for collecting sufficient data for kinetic modeling purposes. The information contained in the transient data during the evolution toward the steady-state is, at present, not used for kinetic modeling since the stabilization behavior is not well understood. The present work aims at accelerating kinetic model construction by employing these transient data, provided that the stabilization can be adequately accounted for. A comparison between the model obtained against the steady-state data and the one after accounting for the transient information was carried out. It was demonstrated that by accounting for the stabilization, combined with an experimental design algorithm, a more robust and faster manner was obtained to identify kinetic parameters, which saves time and cost. An application was presented in hydrodenitrogenation, but the proposed methodology can be extended to any hydroprocessing reaction.

scholarly journals An experimental, theoretical and kinetic-modeling study of the gas-phase oxidation of ammonia

2020 ◽  
Vol 5 (4) ◽  
pp. 696-711 ◽  
Author(s):  
Alessandro Stagni ◽  
Carlo Cavallotti ◽  
Suphaporn Arunthanayothin ◽  
Yu Song ◽  
Olivier Herbinet ◽  
...  
Keyword(s):  
Kinetic Model ◽  
Gas Phase ◽  
Theoretical Investigation ◽  
Kinetic Modeling ◽  
Ammonia Gas ◽  
Wide Range ◽  
Phase Oxidation ◽  
Detailed Kinetic Model ◽  
Gas Phase Oxidation ◽  
Modeling Study

A wide-range experimental and theoretical investigation of ammonia gas-phase oxidation is performed, and a predictive, detailed kinetic model is developed.

A new substrate and by-product kinetic model for the photodegradation of 4-chlorophenol with KrCl exciplex UV lamp and hydrogen peroxide

2012 ◽  
Vol 187 ◽  
pp. 36-44 ◽  
Author(s):  
M.D. Murcia ◽  
M. Gómez ◽  
E. Gómez ◽  
J.L. Gómez ◽  
A.M. Hidalgo ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Model ◽  
Uv Lamp

scholarly journals Furfural Oxidation with Hydrogen Peroxide Over ZSM-5 Based Micro-Mesoporous Aluminosilicates

2021 ◽  
Author(s):  
Nataliya D. Shcherban ◽  
Roman Yu. Barakov ◽  
Sergii A. Sergiienko ◽  
Kari Eränen ◽  
Johan Wärnå ◽  
...  
Keyword(s):  
Hydrogen Peroxide ◽  
Kinetic Model ◽  
Succinic Acid ◽  
Sulfated Zirconia ◽  
Template Method ◽  
Reaction Products ◽  
Mesoporous Aluminosilicates ◽  
Dual Functional

AbstractMicro-mesoporous aluminosilicates based on ZSM-5 zeolite, obtained by a dual template method, as well as in the presence of a dual-functional template (i.e. a Gemini-type surfactant), were tested in the oxidation of furfural with hydrogen peroxide. Even substantial changes in acidity and porosity of the catalysts result in minor variations of selectivity towards the desired products. Application of the synthesized zeolite-based materials in the oxidation of furfural with hydrogen peroxide leads to formation of 2(5H)-furanone (yield up to 28.5%) and succinic acid (up to 19.5%) as the main C4 reaction products. The kinetic model developed previously to treat the results for oxidation of furfural over sulfated zirconia was able to describe the data also for micro-mesoporous aluminosilicates. Graphical Abstract

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