scholarly journals From batch to continuous: Au-catalysed oxidation of d-galacturonic acid in a packed bed plug flow reactor under alkaline conditions

2018 ◽  
Vol 3 (4) ◽  
pp. 540-549 ◽  
Author(s):  
F. van der Klis ◽  
L. Gootjes ◽  
J. van Haveren ◽  
D. S. van Es ◽  
J. H. Bitter
Keyword(s):  
Galacturonic Acid ◽  
Flow Reactor ◽  
Plug Flow ◽  
Packed Bed ◽  
Plug Flow Reactor ◽  
Catalysed Oxidation ◽  
Alkaline Conditions

Comparing the Au-catalysed oxidation of sugar acids: highest selectivity obtained in batch, superior productivity in flow.

scholarly journals Catalyst Stability Assessment in a Lab-Scale Liquid-Solid (LS)² Plug-Flow Reactor

Catalysts ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 755 ◽  
Author(s):  
Anton De Vylder ◽  
Jeroen Lauwaert ◽  
Stijn Van Auwenis ◽  
Jeriffa De Clercq ◽  
Joris W. Thybaut
Keyword(s):  
Catalyst Deactivation ◽  
Flow Reactor ◽  
Catalyst Activity ◽  
Plug Flow ◽  
Experimental Tests ◽  
Packed Bed ◽  
Plug Flow Reactor ◽  
Catalyst Stability ◽  
Commercial Resin ◽  
Intrinsic Kinetics

A packed-bed plug-flow reactor, denoted as the lab-scale liquid-solid (LS)² reactor, has been developed for the assessment of heterogeneous catalyst deactivation in liquid-phase reactions. The possibility to measure intrinsic kinetics was first verified with the model transesterification of ethyl acetate with methanol, catalyzed by the stable commercial resin Lewatit K2629, for which a turnover frequency (TOF) of 6.2 ± 0.4 × 10−3 s−1 was obtained. The absence of temperature and concentration gradients was verified with correlations and experimental tests. The potential for assessing the deactivation of a catalyst was demonstrated by a second intrinsic kinetics evaluation where a methylaminopropyl (MAP)-functionalized mesoporous silica catalyst was used for the aldol reaction of acetone with 4-nitrobenzaldehyde in different solvents. The cooperative MAP catalyst deactivated as a function of time on stream when using hexane as solvent. Yet, the monofunctional MAP catalyst exhibited stable activity for at least 4 h on stream, which resulted in a TOF of 1.2 ± 0.1 × 10−3 s−1. It did, however, deactivate with dry acetone or DMSO as solvent due to the formation of site-blocking species. This deactivation was mitigated by co-feeding 2 wt % of water to DMSO, resulting in stable catalyst activity.

scholarly journals An in situ spatially resolved analytical technique to simultaneously probe gas phase reactions and temperature within the packed bed of a plug flow reactor

The Analyst ◽  
2013 ◽  
Vol 138 (10) ◽  
pp. 2858 ◽  
Author(s):  
Jamal Touitou ◽  
Robbie Burch ◽  
Christopher Hardacre ◽  
Colin McManus ◽  
Kevin Morgan ◽  
...  
Keyword(s):  
Gas Phase ◽  
Flow Reactor ◽  
Plug Flow ◽  
Packed Bed ◽  
Plug Flow Reactor ◽  
Gas Phase Reactions ◽  
Analytical Technique ◽  
Spatially Resolved

Enhancing Fenton-like oxidation of crystal violet over Fe/ZSM-5 in a plug flow reactor

2021 ◽  
Author(s):  
Sara Modarresi-Motlagh ◽  
Fatemeh Bahadori ◽  
Mohammad Ghadiri ◽  
Arash Afghan
Keyword(s):  
Crystal Violet ◽  
Flow Reactor ◽  
Plug Flow ◽  
Plug Flow Reactor

Anaerobic digestion of pineapple pulp and peel in a plug-flow reactor

2012 ◽  
Vol 110 ◽  
pp. 40-47 ◽  
Author(s):  
Pimjai Namsree ◽  
Worakrit Suvajittanont ◽  
Chureerat Puttanlek ◽  
Dudsadee Uttapap ◽  
Vilai Rungsardthong
Keyword(s):  
Anaerobic Digestion ◽  
Flow Reactor ◽  
Plug Flow ◽  
Plug Flow Reactor ◽  
Pineapple Pulp

Optimization of esterification of fatty acid rubber seed oil for methyl ester synthesis in a plug flow reactor

2016 ◽  
Vol 13 (7) ◽  
pp. 720-729 ◽  
Author(s):  
Tho Dinh Son Van ◽  
Nghia Phan Trung ◽  
Vu Nguyen Anh ◽  
Huong Nguyen Lan ◽  
Anh To Kim
Keyword(s):  
Fatty Acid ◽  
Methyl Ester ◽  
Seed Oil ◽  
Flow Reactor ◽  
Plug Flow ◽  
Plug Flow Reactor ◽  
Ester Synthesis ◽  
Rubber Seed Oil ◽  
Rubber Seed
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