A New Concept of Stirred Multiphase Reactor Using a Stationary Catalytic Foam

Benamara, Nassima; Assoua, Didier; Jaffeux, Louis; Vanoye, Laurent; Simescu-Lazar, Florica; Zanota, Marie-Line; Bornette, Frédéric; Meille, Valérie; Pitault, Isabelle

doi:10.3390/pr6080117

Cited by 4 publications

(4 citation statements)

References 21 publications

(25 reference statements)

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“…Stirred tank reactors (STRs) are the widely used industrial workhorse for chemical reactions, including heterogeneous catalysis, [55][56][57] catalytic cracking, 58 catalytic foaming, 59 and Fischer-Tropsch synthesis, 60 just to name but a few. In terms of operation, solvent and catalyst particles are added to the tank, and impeller or impellers are used for mixing and suspending mobile catalyst solids.…”

Section: Stirred Tank Reactorsmentioning

confidence: 99%

Another Critical Look at Three-Phase Catalysis

2020

Pharmaceutical Fronts

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Three-phase catalysis, for example, hydrogenation, is a special branch of chemical reactions involving a hydrogen reactant (gas) and a solvent (liquid) in the presence of a metal porous catalyst (solid) to produce a liquid product. Currently, many reactors are being used for three-phase catalysis from packed bed to slurry vessel; the uniqueness for this type of reaction in countless processes is the requirement of transferring gas into liquid, as yet there is not a unified system of quantifying and comparing reactor performances. This article reviews current methodologies in carrying out such heterogeneous catalysis in different reactors and focuses on how to enhance reactor performance from gas transfer perspectives. This article also suggests that the mass transfer rate over energy dissipation may represent a fairer method for comparison of reactor performance accounting for different types/designs of reactors and catalyst structures as well as operating conditions.

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Section: Stirred Tank Reactorsmentioning

confidence: 99%

Another Critical Look at Three-Phase Catalysis

2020

Pharmaceutical Fronts

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“…Catalytic OCF are now widely used for process intensification due to the high mass and heat transfer and low pressure drop they offer. [13][14][15][16] 2 Experimental section…”

Section: Introductionmentioning

confidence: 99%

Open cell foam materials as Pd reservoirs for Suzuki–Miyaura coupling catalysis at ppb level

et al. 2023

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“…PCR is one of the most commonly used enzymatic processes that involve discrete thermal cycling, making it a good option to study heat transport characteristics in microfluidic chips. Thermal modeling is a key element of many biochemical analysis systems, involving operations, such as kinetics analysis [2][3][4], enzyme catalytic mechanism [5][6][7], and biochemical interaction analysis [8][9][10]. Due to lateral thermal diffusion process in microfluidic chips, the thermal profile in microchannel can be accurately captured by using a three-dimensional conjugate heat transfer model.…”

Section: Introductionmentioning

confidence: 99%

Numerical Investigation of Design and Operating Parameters of Thermal Gradient Continuous-Flow PCR Microreactor Using One Heater

Perwez¹,

Aziz²,

Ahmed³

et al. 2019

Processes

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To respond to the dire need for miniaturization and process simplification of continuous-flow PCR (CF-PCR) device, this paper represents design and operation guide of a novel metal alloy assisted hybrid microdevice (polydimethylsiloxane (PDMS) and glass) for CF-PCR employing one heater. In this research, the specific objectives are to determine whether one heater chip design will be flexible enough when the size of DNA base pair is varied and to investigate whether one heater CF-PCR device will be able to resolve the longstanding problem of thermal crosstalk. Furthermore, the parametric study is performed to determine which of the fourteen parameters have the greatest impact on the performance of one heater CF-PCR device. The main objective of this parametric study is to distinguish between the parameters that are either critical to the chip performance or can be freely specified. It is found that substrate thickness, flow rate, channel spacing, aspect ratio, channel pass length and external heat transfer coefficient are the most limiting parameters that can either improve or deteriorate the chip’s thermal performance. Overall, the impact of design and operating parameters are observed to be least on thermocycling profile at low Reynolds number (≤0.37 Re). However, in addition to the primary metric advantages of CF-PCR, one heater chip design helps in minimizing the thermal crosstalk effects by a factor of 4 in comparison to dual heater PCR while still maintaining a critical criteria of chip flexibility in terms of handling various sizes of DNA fragments. Hence, the proposed scheme paves the way for low-cost point-of-care diagnostics, system integration, and device miniaturization, realizing a portable microfluidic device applicable for on-site and direct field uses.

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A New Concept of Stirred Multiphase Reactor Using a Stationary Catalytic Foam

Cited by 4 publications

References 21 publications

Another Critical Look at Three-Phase Catalysis

Another Critical Look at Three-Phase Catalysis

Open cell foam materials as Pd reservoirs for Suzuki–Miyaura coupling catalysis at ppb level

Numerical Investigation of Design and Operating Parameters of Thermal Gradient Continuous-Flow PCR Microreactor Using One Heater

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