Reaction kinetics for the hydrothermal carbonisation of cellulose in a two-phase pathway

Fuel ◽  
2022 ◽  
Vol 309 ◽  
pp. 122169
Author(s):  
Andrés Chacón-Parra ◽  
Philip van Eyk
Keyword(s):  
Reaction Kinetics ◽  
Two Phase ◽  
Hydrothermal Carbonisation

scholarly journals Supramolecular interactions between catalytic species allow rational control over reaction kinetics

2019 ◽  
Vol 10 (39) ◽  
pp. 9115-9124 ◽  
Author(s):  
Abraham J. P. Teunissen ◽  
Tim F. E. Paffen ◽  
Ivo A. W. Filot ◽  
Menno D. Lanting ◽  
Roy J. C. van der Haas ◽  
...  
Keyword(s):  
Dft Calculations ◽  
Reaction Kinetics ◽  
Phase Transfer ◽  
Supramolecular Interactions ◽  
Two Phase ◽  
Phase Transfer Catalysts ◽  
System P ◽  
Non Covalent Interactions ◽  
Rational Control ◽  
Covalent Interactions

The non-covalent interactions between two phase-transfer catalysts allow tuning of reaction kinetics from bimolecular, to pseudo 0th order, to sigmoidal. Kinetic models and DFT calculations are used to obtain detailed insight in the system.

A comparison of two-phase and three-phase CO2 methanation reaction kinetics

Fuel ◽  
2019 ◽  
Vol 239 ◽  
pp. 896-904 ◽  
Author(s):  
Jonathan Lefebvre ◽  
Siegfried Bajohr ◽  
Thomas Kolb
Keyword(s):  
Reaction Kinetics ◽  
Two Phase ◽  
Co2 Methanation ◽  
Methanation Reaction ◽  
Three Phase

scholarly journals Inference of Reaction Kinetics for Supercritical Water Heavy Oil Upgrading with a Two-phase Stirred Reactor Model

2021 ◽  
Author(s):  
Ashwin Raghavan ◽  
Ping He ◽  
Ahmed Ghoniem
Keyword(s):  
Reaction Kinetics ◽  
Supercritical Water ◽  
Heavy Oil ◽  
Batch Reactor ◽  
Operating Conditions ◽  
Water Phase ◽  
Reactor Model ◽  
Two Phase ◽  
Stirred Reactor ◽  
Heavy Oil Upgrading

We present the development and application of a two-phase stirred reactor model for heavy oil upgrading in the presence of supercritical water (SCW), with coupled phase-specific thermolysis reaction kinetics and multicomponent hydrocarbon water phase equilibrium. We demonstrate the inference of oil and water phase kinetics parameters for a compact lumped reaction kinetics model through the application of this model to two different sets of batch reactor experiments reported in the literature. We infer that, though SCW can suppress the formation of newer polynuclear aromatics (PNA) from distillate range species, it is broadly ineffective in deterring the combination of pre-existing PNA fragments in the oil feed. Quantification of the conversion to distillate liquids before the onset of coke formation helps arrive at a clearer conclusion on whether the use of SCW in the batch reactor leads to better product outcomes for different oil feeds and operating conditions.

A two-phase second-order reaction: Kinetics of epoxidation of methyl 12,13-epoxyoleate

1969 ◽  
Vol 46 (6) ◽  
pp. 327-331 ◽  
Author(s):  
H. L. Rothbart ◽  
M. E. Snook ◽  
J. F. Rusling ◽  
W. E. Scott
Keyword(s):  
Reaction Kinetics ◽  
Order Reaction ◽  
Second Order ◽  
Second Order Reaction ◽  
Two Phase ◽  
Kinetics Of

Denitrification of nitrite in a two-phase fluidized bed bioreactor

1996 ◽  
Vol 34 (1-2) ◽  
pp. 339-346 ◽  
Author(s):  
A. Hirata ◽  
A. A. Meutia
Keyword(s):  
Carbon Source ◽  
Reaction Kinetics ◽  
Fluidized Bed ◽  
Biological Treatment ◽  
High Efficiency ◽  
Two Phase ◽  
Fluidized Bed Bioreactor ◽  
Nitrite Nitrogen ◽  
Degrading Bacteria ◽  
Characteristic Values

Denitrification of nitrite-nitrogen carried out experimentally in an anoxic two-phase fluidized bed bioreactor is described, and the characteristics of the biological treatment were also theoretically studied. Methanol was used as the carbon source, and nitrite-degrading bacteria immobilized on CB particles were employed. A method for evaluating the characteristics of the biological treatment is proposed. Within the range of the experiment, the results show that denitrification of nitrite-nitrogen could be approximated by Monod-type reaction kinetics, characteristic values for the biological treatment of Ku = 5.0 kg-N·kg−1-VS·d−1 and Ku/Km = 23.8 m3·kg−1-VS·d−1 being obtained. There was good correlation between the experimental results and the calculated curves. A maximum volumetric denitrification rate for nitrite of 18.7 kg-N·m−3·d−1 was achieved, this high value demonstrating the high efficiency of an anoxic two-phase fluidized bed bioreactor to denitrify nitrite-nitrogen.

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