Continuous-flow photochemistry is used increasingly by researchers in academia and industry to facilitate photochemical processes their subsequent scale-up. However, without detailed knowledge concerning the engineering aspects of photochemistry, it can be quite challenging develop a suitable microreactor for given reaction. In this review, we provide an up-to-date overview both technological chemical associated with microreactors. Important design considerations, such as light sources,...

An operationally simple numbering-up strategy for the scale-up of gas–liquid photocatalytic reactions was developed, which provides an excellent flow distribution (SD_w< 10%).

Abstract In this experiment, the inert gas is used to agitate two immiscible fluids in microchannels. The mass transfer performances with or without agitation are investigated. 30% TBP (in kerosene)‐acetic acid‐water chosen as testing system, and nitrogen agitating gas. superficial velocities of liquid–liquid phases phase varied range from 0.02 1.2 m/s, 0 3.0 respectively. microchannels, enough intensity, high dispersion between liquid can be obtained. overall volumetric mean coefficients...

A compact photomicroreactor assembly consisting of a capillary microreactor and small‐scale light emitting diodes was developed for the study reaction kinetics in gas‐liquid photocatalytic oxidation thiophenol to phenyl disulfide within Taylor flow. The importance photons convincingly shown by suction phenomenon due fast consumption oxygen. Mass transfer limitations were evaluated an operational zone without mass effects chosen kinetics. Effects photocatalyst loading sources on performance...

Liquid–liquid mass transfer performance in a capillary microreactor system was studied with an improved experimental method. Proper sampling modes were chosen to eliminate the effect of zone on characterization systems. The overall volumetric coefficients T‐micromixer and found smoothly increase then significantly increasing Reynolds number two immiscible liquid phases. Other factors such as inlet mode inner diameter T‐micromixer, length, flux ratio aqueous phase organic affected system....

The numbering-up of zigzag-form microchannels for liquid mixing was experimentally investigated in a multichannel micromixer including 8 parallel channels, based on the Villermaux-Dushman reaction system, with an appropriate sulphuric acid concentration. results showed that micromixing performance such micromixers could reach same quality as single microchannel, when flat constructal distributors bifurcation configurations were used. did not depend whether vertical or horizontal position...

The robustness of a numbered-up capillary photomicroreactor system was evaluated when subjected to common disturbances, such as clogging and light failure.

Photocatalytic radical trifluoromethylation strategies have impacted the synthesis of trifluoromethyl-containing molecules. However, mechanistic aspects concerning such transformations remain poorly understood. Here, we describe in detail mechanism visible-light photocatalytic N-methylpyrrole with gaseous CF3 I flow. The use continuous-flow microreactor technology allowed for determination different important parameters high precision (e.g., photon flux, quantum yield, reaction rate...

A convenient strategy to intensify the liquid–liquid mass transfer performance in a capillary microreactor system was developed by narrowing inlet channel of T‐micromixer or adding baffles into capillary. Various geometrical parameters such as mode and diameter modified T‐micromixer, number interval distance between were investigated elaborate intensification mechanism. The two‐phase flow patterns new microreactors captured high‐speed camera. Moreover, pressure drops specific energy...

Process intensification for CO2 absorption using microreactors has received growing interest from both academia and industry because of their great ability to overcome the mass transfer resistance across phases boundaries, giving rise significant improvement in process efficiency. Mass is strongly linked with two-phase flow patterns CO2-absorbent and, subsequently, overall volumetric coefficient (ka) relies on hydrodynamics, microreactor structures applied absorbents. Reviewed literature...

Abstract A low‐cost, low‐noise, high‐frequency microchannel photoelectric detection device based on a photodiode was developed. Based this device, waveforms of gas–liquid and liquid–liquid two‐phase flows in were collected, then online flow pattern realized by using artificial intelligence algorithms. Light intensity distribution characteristics slug simulated COMSOL software, detailed analyses conducted to examine the relationship between waveform variations morphology. After denoising...