One-step synthesis of glycidol from glycerol in a gas-phase packed-bed continuous flow reactor over HZSM-5 zeolite catalysts modified by CsNO3

2020 ◽  
Vol 394 ◽  
pp. 124945 ◽  
Author(s):  
Andrii Kostyniuk ◽  
David Bajec ◽  
Petar Djinović ◽  
Blaž Likozar
Keyword(s):  
Gas Phase ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Packed Bed ◽  
Zeolite Catalysts ◽  
Continuous Flow Reactor ◽  
One Step

scholarly journals Development of a tubular continuous flow reactor for the investigation of improved gas–solid interaction in photocatalytic CO2 reduction on TiO2

2019 ◽  
Vol 18 (2) ◽  
pp. 314-318 ◽  
Author(s):  
Martin Dilla ◽  
Ahmet E. Becerikli ◽  
Alina Jakubowski ◽  
Robert Schlögl ◽  
Simon Ristig
Keyword(s):  
Gas Phase ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Tubular Reactor ◽  
Co2 Reduction ◽  
Continuous Flow Reactor ◽  
Reactor Geometry

Newly developed tubular reactor geometry allows intensive gas–solid interaction in photocatalytic gas-phase CO2 reduction.

Translucent nanoparticle-based aerogel monoliths as 3-dimensional photocatalysts for the selective photoreduction of CO2 to methanol in a continuous flow reactor

2017 ◽  
Vol 4 (6) ◽  
pp. 1115-1121 ◽  
Author(s):  
Felix Rechberger ◽  
Markus Niederberger
Keyword(s):  
Gas Phase ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Gas Phase Reactions ◽  
3 Dimensional ◽  
Continuous Flow Reactor

A newly developed prototype of a flow reactor enables the exploitation of nanoparticle based aerogel monoliths as macroscopically sized photocatalysts in gas phase reactions.

scholarly journals Gas-Phase and Aqueous Photocatalytic Oxidation of Methylamine: The Reaction Pathways

2007 ◽  
Vol 2007 ◽  
pp. 1-6 ◽  
Author(s):  
Anna Kachina ◽  
Sergei Preis ◽  
German Charles Lluellas ◽  
Juha Kallas
Keyword(s):  
Carbon Dioxide ◽  
Gas Phase ◽  
Continuous Flow ◽  
Photocatalytic Oxidation ◽  
Organic Nitrogen ◽  
Flow Reactor ◽  
Ammonia Nitrogen ◽  
Alkaline Media ◽  
Reaction Pathways ◽  
Continuous Flow Reactor

Photocatalytic oxidation (PCO) of methylamine (MA) on titanium dioxide in aqueous and gaseous phases was studied. A simple batch glass reactor for aqueous PCO and an annular continuous flow reactor for the gas-phase PCO were used. Maximum aqueous PCO efficiency was achieved in alkaline media. Two mechanisms of aqueous PCO—decomposition to formate and ammonia, and oxidation of organic nitrogen directly to nitrite—lead ultimately toCO2, water, ammonia, and nitrate: formate and nitrite were observed as intermediates. A part of the ammonia formed in the reaction was oxidized to nitrite and nitrate. Volatile PCO products of MA included ammonia, nitrogen dioxide(NO2), nitrous oxide(N2O), carbon dioxide, and water. Thermal catalytic oxidation (TCO) resulted in the formation of ammonia, hydrogen cyanide, carbon monoxide, carbon dioxide, and water. The gas-phase PCO kinetics is described by the monomolecular Langmuir-Hinshelwood model. No deactivation ofTiO2catalyst was observed.

Photocatalytic degradation of H2S in the gas-phase using a continuous flow reactor coated with TiO2-based acrylic paint

2018 ◽  
Vol 40 (17) ◽  
pp. 2276-2289 ◽  
Author(s):  
Eduardo Borges Lied ◽  
Camilo Freddy Mendoza Morejon ◽  
Rodrigo Leonardo de Oliveira Basso ◽  
Ana Paula Trevisan ◽  
Paulo Rodrigo Stival Bittencourt ◽  
...  
Keyword(s):  
Photocatalytic Degradation ◽  
Gas Phase ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Acrylic Paint ◽  
Continuous Flow Reactor

Enzymatic synthesis of a series of alkyl esters using novozyme 435 in a packed-bed, miniaturized, continuous flow reactor

2008 ◽  
Vol 26 (6) ◽  
pp. 466-472 ◽  
Author(s):  
L. L. Woodcock ◽  
C. Wiles ◽  
G. M. Greenway ◽  
P. Watts ◽  
A. Wells ◽  
...  
Keyword(s):  
Enzymatic Synthesis ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Packed Bed ◽  
Alkyl Esters ◽  
Continuous Flow Reactor ◽  
Novozyme 435

scholarly journals Ene-reductase transformation of massoia lactone to δ-decalactone in a continuous-flow reactor

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ewa Szczepańska ◽  
Danilo Colombo ◽  
Francesca Tentori ◽  
Teresa Olejniczak ◽  
Elisabetta Brenna ◽  
...  
Keyword(s):  
Continuous Flow ◽  
Membrane Filtration ◽  
Flow Reactor ◽  
Immobilized Cells ◽  
Packed Bed ◽  
Natural Food ◽  
Regeneration System ◽  
Batch Mode ◽  
Cell Lysate ◽  
Continuous Flow Reactor

AbstractThe demand for natural food flavorings increases every year. Biotransformation has become an attractive approach to obtain natural products. In this work, enantiomerically pure (R)-(+)-δ-decalactone was obtained by reduction of the C=C double bond of natural massoia lactone in a continuous-flow reactor. Of 13 different ene-reductases isolated, purified and tested, OYE3 was found to be the most efficient biocatalyst. The selected biocatalyst, either in the form of purified enzyme, cell lysate, whole cells or immobilized cells, was tested in the batch system as well as in the packed-bed flow bioreactor. The biotransformation performed in batch mode, using Ca2+-alginate immobilized cells of Escherichia coli BL21(DE3)/pET30a-OYE3, furnished the desired product with complete conversion in 30 min. The process was intensified using a continuous-flow reactor-membrane filtration system (flow 0.1 mL/min, substrate concentration 10 mM, pH 7, 24 °C) with cell lysate as biocatalyst combined with a cofactor regeneration system, which allowed obtaining > 99% bioconversion of massoia lactone.

Synthesis of Nano-sized Yttrium-Aluminum Garnet in a Continuous-Flow Reactor in Supercritical Fluids

2008 ◽  
Vol 63 (6) ◽  
pp. 756-764 ◽  
Author(s):  
Tadeusz Chudoba ◽  
Edward Lester ◽  
Witold Łojkowski ◽  
Martin Poliakoff ◽  
Jun Li ◽  
...  
Keyword(s):  
Supercritical Fluids ◽  
Continuous Flow ◽  
Yttrium Aluminum Garnet ◽  
Flow Reactor ◽  
Step Process ◽  
Continuous Flow Reactor ◽  
Yttrium Aluminum ◽  
One Step ◽  
Favorable Conditions ◽  
Helium Pycnometry

The conditions for obtaining pure yttrium-aluminum garnet (YAG) in a one-step process starting from components soluble in supercritical (SCR) liquids in a flow reactor have been studied. The powders were characterized using XRD, BET, SEM and helium pycnometry. Favorable conditions for YAG production were achieved using acetates (and acetylacetonates) in aqueous-alcoholic solutions as starting materials. Aqueous and alcoholic solutions of nitrates and aqueous solutions of acetates were found not appropriate as precursors for YAG production. The powders obtained had the shape of nano-sized cubes with diameters in the range 80 - 120 nm. After annealing at 600 °C the powders have comparable density as those made via a conventional precipitation-calcination route but differ from the calcinated products form soft agglomerates.

Efficient photocatalytic degradation of gas‐phase formaldehyde by Pt/TiO 2 nanowires in a continuous flow reactor

ChemCatChem ◽  
2020 ◽  
Vol 12 (21) ◽  
pp. 5420-5429
Author(s):  
Wenyu Diao ◽  
Hongyue Cai ◽  
Lu Wang ◽  
Xi Rao ◽  
Yongping Zhang
Keyword(s):  
Photocatalytic Degradation ◽  
Gas Phase ◽  
Continuous Flow ◽  
Flow Reactor ◽  
Continuous Flow Reactor
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