نتایج جستجو برای: microreactors

تعداد نتایج: 586  

2013
M. de-Souza G. M. Zanin F. F. Moraes

Microreactors are miniaturized chemical reaction systems, which contain reaction channels with characteristic dimensions in the range of 10-500 μm. One possible application for microreactors is the conversion of ethanol to hydrogen used in fuel cells to generate electricity. In this paper a rigorous isothermal, steady-state two-dimensional model was developed to simulate the behavior of a membr...

2017
Graeme Hunt Nader Karimi Mohsen Torabi

Heat transfer and entropy generation are analysed theoretically in a thermal model of microreactors accommodating processes with large heat of reaction. This includes an asymmetric, thick wall, partially-filled porous microchannel under local thermal non-equilibrium. The system features exothermicity/endothermicity within the solid and fluid phases to represent heat of chemical reactions and ab...

2005
H. Lee Q. Hao R. G. Yang X. Chen G. Chen

This project utilizes microfluidic systems to study how groups of liver cells acquire emergent tissue properties. Hepatocytes (the parenchymal cells of the liver) respond to many cues in their microenvironment: neighboring cells, growth factors, extracellular matrix, dissolved oxygen, and their interactions. One tissue property of interest is the compartmentalization of gene expression in multi...

Journal: :Entropy 2017
Lilian Govone Mohsen Torabi Graeme Hunt Nader Karimi

This paper presents a theoretical investigation of the second law performance of double diffusive forced convection in microreactors with the inclusion of nanofluid and radiation effects. The investigated microreactors consist of a single microchannel, fully filled by a porous medium. The transport of heat and mass are analysed by including the thick walls and a first order, catalytic chemical ...

Journal: :Materials advances 2021

Additive manufacturing has the potential to replace costly and cumbersome traditional techniques even in fabrication of sub-millimetre devices. Microfluidic catalytic materials will soon be fabricated by scientists their own labs.

Journal: :Chemie Ingenieur Technik 2022

In the renaissance of organic electrochemistry, 150-year-old Kolbe chemistry offers a sustainable pathway to liquid energy carriers and commodities. Herein, easy-access design methods for electrochemical microreactors employing 3D printing simple post processing techniques are presented. The continuous Non-Kolbe electrolysis monomethyl succinic acid is studied as test reaction production an ind...

1998
B. A. Grzybowski

This paper describes a procedure that allows the rapid generation of elastomeric masters for microcontact printing (μCP) and for a new variant of this technique: controlled sagging microcontact printing (CSμCP). Using a low-power laser (10 mW) operating at 532 nm, the desired pattern is ablated in a thin poly(methyl methacrylate) film doped with a dye (rhodamine B base). Subsequent pattern tran...

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