National Repository of Grey Literature 20 records found  1 - 10next  jump to record: Search took 0.01 seconds. 
A microreactor study for gas-phase catalytic oxidation, stage 6 and 7
Stavárek, Petr ; Jiřičný, Vladimír ; Hejda, Stanislav
Report describes the adaptation of the experimental apparatus for the installation of the microreactor for the second reaction step for the gas-phase catalytic oxidation.
A microreactor study for gas-phase catalytic oxidation, stage 5.1 and 5.2
Stavárek, Petr ; Jiřičný, Vladimír ; Hejda, Stanislav
Report focuses on experimental tests of a microreactor applied to the gas-phase catalytic oxidation under different operating conditions.
Evaluation of Residence Time Distribution in Millireactor with Laminar Flow: Comparison of Experiments, CFD and Laminar Flow Model.
Hejda, Stanislav ; Trávníčková, Tereza ; Havlica, Jaromír ; Stavárek, Petr ; Staněk, Vladimír
We present a study of RTD in the case of small straight channels. RTD measurements in liquid phase were performed by a dye injection and its absorbance measurements with a spectrometer at the inlet and the outlet of the reactor. The method consistency was confirmed by a dye mass balance between inlet and outlet which was satisfied with an error of 5% rel. The RTD in the measured section was characterized by so called e-curve E (t), mean residence time and Peclet number for different flow conditions (Reynold´s numbers). The RTD data for various channel lengths and liquid flow rates were compared.
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Plný tet: SKMBT_C22016090211351 - Download fulltextPDF
Homogeneous Catalytic Hydrogenations and Photocatalytic Reactions in Microstructured Reactor Systems
Pavlorková, Jana ; Křišťál, Jiří ; Drhová, Magdalena ; Hejda, S. ; Klusoň, Petr
Microstructured reactor (MSR) systems play a key role in modern industrial processes which require obtaining products of predefined high purity and quality. MSR systems are being currently successfully used for this purpose. Their unique features rest in the high active surface to the reaction volume ratio ensuring easier and proper maintaining of reaction conditions as well as the fast heat, mass and momentum transfer. The use of MSR systems leads to the elimination of side products and consequently to the elimination of additional separation processes. This fact makes the microreactor technology more straightforward in comparison with the conventional batch reactor technology. MSR are being tested for the production of fine-chemical industry and special small-scale productions as well. Two different commercial MSR systems were tested: the microchip reactor system Labtrix (Fig. 1) and the photochemical microreactor based on the Modular Micro Reactor System (MMRS) platform. In this contribution we present these two MSR systems with their applications: the stereoselective hydrogenation, and the photochemical oxidation.
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Plný tet: SKMBT_C22014092610172 - Download fulltextPDF

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5 Hejda, Stanislav
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