Effects of ionic liquids on the reaction kinetics of a laccase–mediator system

RSC Advances ◽  
2014 ◽  
Vol 4 (33) ◽  
pp. 17097-17104 ◽  
Author(s):  
Nora Harwardt ◽  
Natascha Stripling ◽  
Simon Roth ◽  
Haifeng Liu ◽  
Ulrich Schwaneberg ◽  
...  
Keyword(s):  
Ionic Liquids ◽  
Reaction Kinetics ◽  
System P ◽  
Mediator System ◽  
Laccase Mediator System ◽  
Kinetics Of

Conductivity and viscosity explain part of the effect of ionic liquids on the laccase–mediator system kinetics, but not all.

The chemistry, morphology, crystal structure and hydrophilicity properties of wood fibers treated by a magnetic immobilized laccase–mediator system

RSC Advances ◽  
2016 ◽  
Vol 6 (39) ◽  
pp. 32572-32579 ◽  
Author(s):  
Jianpeng Hu ◽  
Wenxin Du ◽  
Xiaodi Ji ◽  
Bingnan Yuan ◽  
Yi Liu ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Wood Fibers ◽  
Immobilized Laccase ◽  
System P ◽  
Mediator System ◽  
Laccase Mediator System

The chemistry, morphology, crystal structure and hydrophilicity properties of wood fibers treated by magnetic immobilized laccase–mediator system (ILMS) which had never previously been examined were investigated.

Dynamics and reaction kinetics of coarse-grained bulk vitrimers: a molecular dynamics study

2019 ◽  
Vol 21 (24) ◽  
pp. 13258-13267 ◽  
Author(s):  
Jian-Bo Wu ◽  
Shu-Jia Li ◽  
Hong Liu ◽  
Hu-Jun Qian ◽  
Zhong-Yuan Lu
Keyword(s):  
Molecular Dynamics ◽  
Monte Carlo ◽  
Reaction Kinetics ◽  
Dynamic Behavior ◽  
Coarse Grained ◽  
Exchange Reactions ◽  
Dynamics Model ◽  
System P ◽  
Intrinsic Mechanism ◽  
Kinetics Of

We used the hybrid molecular dynamics–Monte Carlo (MD–MC) algorithm to establish a molecular dynamics model that can accurately reflect bond exchange reactions, and reveal the intrinsic mechanism of the dynamic behavior of the vitrimer system.

scholarly journals Measurement of reaction kinetics of [177Lu]Lu-DOTA-TATE using a microfluidic system

2017 ◽  
Vol 46 (42) ◽  
pp. 14669-14676 ◽  
Author(s):  
Z. Liu ◽  
K. S. Schaap ◽  
L. Ballemans ◽  
R. de Zanger ◽  
E. de Blois ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Microfluidic System ◽  
Arrhenius Parameters ◽  
System P ◽  
Kinetics Of

Design and evaluation of a microfluidic system that allowed the determination of Arrhenius parameters for the formation of [177Lu]Lu-DOTA-TATE using clinical radiolabeling conditions.

Reaction kinetics of CO2 absorption in to phosphonium based anion-functionalized ionic liquids

2013 ◽  
Vol 15 (20) ◽  
pp. 7796 ◽  
Author(s):  
Burcu E. Gurkan ◽  
Thomas R. Gohndrone ◽  
Mark J. McCready ◽  
Joan F. Brennecke
Keyword(s):  
Ionic Liquids ◽  
Reaction Kinetics ◽  
Co2 Absorption ◽  
Kinetics Of

Biobleaching of Pulp with Dioxygen in the Laccase-Mediator System. Part 1. Kinetics of Delignification

Holzforschung ◽  
2000 ◽  
Vol 54 (4) ◽  
pp. 390-396 ◽  
Author(s):  
Mikhail Balakshin ◽  
Chen-Loung Chen ◽  
Josef S. Gratzl ◽  
Adrianna G. Kirkman ◽  
Harald Jakob
Keyword(s):  
Reaction Time ◽  
Kappa Number ◽  
Acetate Buffer Solution ◽  
Alkaline Extraction ◽  
Residual Lignin ◽  
Rate Law ◽  
Order Rate ◽  
Mediator System ◽  
Laccase Mediator System ◽  
Kinetics Of

SummaryKinetics of pine kraft-AQ pulp delignification with the laccase-mediator system (LMS) and the effects of variable factors on the delignification were studied. The delignification was conducted in acetate buffer solution at pH 4.5 and at 40°C under atmospheric pressure. Only a part of the residual lignin could be removed in one-stage processes. Kinetics of kappa number reduction follows a pseudo-second order rate law with pulp consistency of 10 %, mediator charge of 0.1 mmole HOBT/g pulp and laccase charage of 10 UCorioluslaccase/g pulp. Kinetics of dioxygen uptake follows a pseudo-first order rate law up to first 8 hours of the reaction and a pseudo-zero order rate law at the reaction time of 8–24 hours. The amounts of dioxygen consumed per removal of one C9-unit equivalent of residual lignin is rather high, 1.5–2.5 mole, and increases with increasing reaction time. Experimental data show that side reactions between the Laccase-Mediator System and products of oxidative degradation of lignin strongly inhibit the delignification either by chemical or physical means or both. Removal of the degraded lignin fragments by alkaline extraction effectively restores the delignification of pulp with LMS. A four-stage process consisting of consecutive treatment of pulp with dioxygen-laccase-HOBT (LMS) followed by alkaline extraction (E), (LMS-E)4, decreased kappa number of a pine kraft-AQ pulp from 21.8 to less than 5. On the basis of the kinetic data, the mechanism of the pulp delignification with LMS is discussed.

Biobleaching of pulp with dioxygen in laccase-mediator system—effect of variables on the reaction kinetics

2001 ◽  
Vol 16 (3-4) ◽  
pp. 205-215 ◽  
Author(s):  
Mikhail Balakshin ◽  
Chen-Loung Chen ◽  
Josef S Gratzl ◽  
Adrianna G Kirkman ◽  
Harald Jakob
Keyword(s):  
Reaction Kinetics ◽  
System Effect ◽  
Mediator System ◽  
Laccase Mediator System

scholarly journals Study on the curing reaction kinetics of a novel epoxy system

RSC Advances ◽  
2017 ◽  
Vol 7 (12) ◽  
pp. 6981-6987 ◽  
Author(s):  
Jiheng Ding ◽  
Wanjun Peng ◽  
Ting Luo ◽  
Haibin Yu
Keyword(s):  
Mechanical Properties ◽  
Reaction Kinetics ◽  
Thermomechanical Properties ◽  
Epoxy System ◽  
Curing Reaction ◽  
System P ◽  
Kinetics Of

A novel epoxy system was prepared and the curing reaction kinetics of the system were studied. The thermomechanical properties and mechanical properties in the system were studied and the system shows the best mechanical properties at 10 wt% of FGE.

High yield conversion of cellulosic biomass into 5-hydroxymethylfurfural and a study of the reaction kinetics of cellulose to HMF conversion in a biphasic system

2016 ◽  
Vol 6 (16) ◽  
pp. 6257-6266 ◽  
Author(s):  
Luqman Atanda ◽  
Muxina Konarova ◽  
Qing Ma ◽  
Swathi Mukundan ◽  
Abhijit Shrotri ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Cellulosic Biomass ◽  
Biphasic System ◽  
High Yield ◽  
System P ◽  
Kinetics Of

Biphasic dehydration of cellulosic biomass into remarkable yield of HMF can be achieved via mechanocatalysis and fractionation treatment.

Impact Of Synthesis Route on the Water Oxidation Kinetics of Hematite Photoanodes

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Charge Accumulation ◽  
Optical Signals ◽  
Current Voltage ◽  
Voltage Performance ◽  
Kinetics Of

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>

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