نتایج جستجو برای: microreactor

تعداد نتایج: 712  

2006
Igor PLAZL

In the last decade, Microreactor Technology (MRT) as a new concept in chemical engineering has demonstrated the advantages of microstructured devices for chemical reactions impressively. Microscale reactors are devices whose operations depend on precisely controlled design features with characteristic dimensions from submillimeter to submicrometer. Due to the small amount of chemicals needed an...

Journal: :Journal of the American Chemical Society 2014
Elad Gross Xing-Zhong Shu Selim Alayoglu Hans A Bechtel Michael C Martin F Dean Toste Gabor A Somorjai

Analysis of catalytic organic transformations in flow reactors and detection of short-lived intermediates are essential for optimization of these complex reactions. In this study, spectral mapping of a multistep catalytic reaction in a flow microreactor was performed with a spatial resolution of 15 μm, employing micrometer-sized synchrotron-based IR and X-ray beams. Two nanometer sized Au nanoc...

2015
Peter Wiktor Al Brunner Peter Kahn Ji Qiu Mitch Magee Xiaofang Bian Kailash Karthikeyan Joshua LaBaer

We report a device to fill an array of small chemical reaction chambers (microreactors) with reagent and then seal them using pressurized viscous liquid acting through a flexible membrane. The device enables multiple, independent chemical reactions involving free floating intermediate molecules without interference from neighboring reactions or external environments. The device is validated by ...

Journal: :Reaction Chemistry and Engineering 2023

Ground electrode cooling improved CO 2 conversion in a DBD microreactor. A maximum of 10.6% was observed at gas temperature 363 K.

Journal: :Electrophoresis 2003
Zhong Guo Songyun Xu Zhengdeng Lei Hanfa Zou Baochuan Guo

Peptide mass mapping analysis, utilizing a regenerable enzyme microreactor with metal-ion chelated adsorption of enzyme, combined with matrix assisted laser desorption/ionization-time of flight-mass spectrometry (MALDI-TOF-MS) was developed. Different procedures from the conventional approaches were adopted to immobilize the chelator onto the silica supports, that is, the metal chelating agent ...

Journal: :Physical chemistry chemical physics : PCCP 2014
M Krivec R Dillert D W Bahnemann A Mehle J Štrancar G Dražić

Photocatalytic degradation of dichloroacetic acid (DCA) was studied in a continuous-flow set-up using a titanium microreactor with an immobilized double-layered TiO2 nanoparticle/nanotube film. Chloride ions, formed during the degradation process, negatively affect the photocatalytic efficiency and at a certain concentration (approximately 0.5 mM) completely stop the reaction in the microreacto...

Journal: :Lab on a chip 2012
Seung-Kon Lee Xiaoying Liu Víctor Sebastián Cabeza Klavs F Jensen

We present a successive microfluidic approach to create and characterize hierarchical catalyst structures consisting of metal-decorated nanoparticles that are assembled into porous microparticles ("supraball" catalysts). First, using a silicon microreactor, platinum nanoparticles with a very narrow size distribution are grown and immobilized uniformly onto iron oxide/silica core-shell nanospher...

2006
Dorota G. Pijanowska Elżbieta Remiszewska Cecilia Pederzolli Lorenzo Lunelli Michele Vendano Roberto Canteri Konrad Dudziński Jerzy Kruk Wladyslaw Torbicz

In this paper, methods of surface modification of different supports, i.e. glass and polymeric beads for enzyme immobilisation are described. The developed method of enzyme immobilisation is based on Schiff’s base formation between the amino groups on the enzyme surface and the aldehyde groups on the chemically modified surface of the supports. The surface of silicon modified by APTS and GOPS w...

Journal: :Environmental Technology and Innovation 2022

This paper aims to reduce the gap between intensified innovative process designs and application of enzyme technologies at an industrial scale that often take full advantage microreactor systems. Soybean potato processing waste was used as source peroxidase in both free immobilized form for biodegradation Acid Violet 109 anthraquinone dye (AV109) a PTFE (polytetrafluoroethylene) which is 0.5 mm...

Journal: :Angewandte Chemie International Edition 2006

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