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Design and characterization of a microreactor for monodisperse catalytic droplet generation at elevated temperatures and/or pressures

Vollenbroek, J.C. (2016) Design and characterization of a microreactor for monodisperse catalytic droplet generation at elevated temperatures and/or pressures.

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Abstract:Catalyst particles used in the Fluid Catalytic Cracking (FCC) of crude oil show large variations in activity both between and within particles . This paper reports the results of the fabrication and characterization of a microfluidic droplet microreactor with potential usfor single catalyst particle diagnostics. The microreactor features a droplet generator, microheaters, micro temperature sensors, and is able to operate at pressures up to 5 bar as of now. This microreactor consists of fluidic channels etched in a silicon substrate and platinum heater and sensor structures embedded in the glass cover. Temperature characterization showed linear behaviour of the sensors with respect tot temperature, with a resolution of 0.15 °C, and a sensitivity of 0.0476 Ω°C^(-1). Furthermore, a PI controller allows control of the heaters within 2.6 °C of the desired temperature. Highly stable and monodisperse oil-in-water droplets are created and heated up to 100 °C at atmospheric pressure, and up to 120 °C at an outlet backing pressure of 5 bar. Preliminary results on the fluorescent detection of the oligomerization reaction of 4-fluorostyrene with zeolite H-ZSM-5 shows the potential of the microreactor chip in investigating the catalytic activity and efficiency of FCC particles.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:33 physics, 35 chemistry, 50 technical science in general, 53 electrotechnology
Programme:Electrical Engineering MSc (60353)
Link to this item:http://purl.utwente.nl/essays/70846
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