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

J. C. Vollenbroek, Johan G. Bomer, A. Van Den Berg, M. Odijk, A. E. Nieuwelink, Bert M. Weckhuysen, R. G. Geitenbeek, R. M. Tiggelaar

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)
71 Downloads (Pure)

Abstract

We report the fabrication and characterization of a microfluidic droplet microreactor with potential use for single catalyst particle diagnostics. The aim is to capture Fluid Catalytic Cracking (FCC) particles in droplets and perform a probe reaction that results in a fluorescent output signal. The intensity of such a signal can be used as a measure of the catalytic activity of the particle. The microreactor features a droplet generator, platinum (Pt) microheaters, and Pt micro temperature sensors, and is able to operate at pressures up to at least 5 bar. Fluidic channels are etched in a silicon substrate, and platinum heater and sensor structures embedded in the glass cover. We have mapped the temperature inside the microchannels using nanoparticles that show temperature-dependent luminescence. At various spots on the chip, the temperature deviates by 0.86 degrees Celsius close to the Pt sensor and 5.5 degrees Celsius farther away from it. Experiments with making oil-in-water droplets at various temperatures and pressures result in stable droplets up to 100 degrees Celsius at atmospheric pressure. At this temperature, small gas bubbles are formed in the water phase, and then collected by the oil droplets. At a pressure of 5 bar, the droplets are stable up to at least 120 degrees Celsius. E-cat FCC particles were captured in water droplets at a rate of 150 droplets per second.

Original languageEnglish
Title of host publication2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017
PublisherIEEE
Pages746-751
Number of pages6
ISBN (Electronic)9781509030590
ISBN (Print)978-1-5090-3060-6
DOIs
Publication statusPublished - 25 Aug 2017
Event12th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017 - UCLA Meyer & Renee Luskin Conference Center, Los Angeles, United States
Duration: 9 Apr 201712 Apr 2017
Conference number: 12

Conference

Conference12th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017
Abbreviated titleNEMS
CountryUnited States
CityLos Angeles
Period9/04/1712/04/17

Fingerprint

platinum
Platinum
Temperature
oils
temperature
Fluid catalytic cracking
water
fluids
cats
fluidics
sensors
temperature sensors
microchannels
heaters
Water
Oils
catalytic activity
atmospheric pressure
bubbles
generators

Keywords

  • droplet microfluidics
  • E-cat FCC
  • elevated temperature and pressure
  • microreactor
  • Pt microheater

Cite this

Vollenbroek, J. C., Bomer, J. G., Van Den Berg, A., Odijk, M., Nieuwelink, A. E., Weckhuysen, B. M., ... Tiggelaar, R. M. (2017). Design and characterization of a microreactor for monodisperse catalytic droplet generation at both elevated temperatures and pressures. In 2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017 (pp. 746-751). [8017127] IEEE. https://doi.org/10.1109/NEMS.2017.8017127
Vollenbroek, J. C. ; Bomer, Johan G. ; Van Den Berg, A. ; Odijk, M. ; Nieuwelink, A. E. ; Weckhuysen, Bert M. ; Geitenbeek, R. G. ; Tiggelaar, R. M. / Design and characterization of a microreactor for monodisperse catalytic droplet generation at both elevated temperatures and pressures. 2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017. IEEE, 2017. pp. 746-751
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abstract = "We report the fabrication and characterization of a microfluidic droplet microreactor with potential use for single catalyst particle diagnostics. The aim is to capture Fluid Catalytic Cracking (FCC) particles in droplets and perform a probe reaction that results in a fluorescent output signal. The intensity of such a signal can be used as a measure of the catalytic activity of the particle. The microreactor features a droplet generator, platinum (Pt) microheaters, and Pt micro temperature sensors, and is able to operate at pressures up to at least 5 bar. Fluidic channels are etched in a silicon substrate, and platinum heater and sensor structures embedded in the glass cover. We have mapped the temperature inside the microchannels using nanoparticles that show temperature-dependent luminescence. At various spots on the chip, the temperature deviates by 0.86 degrees Celsius close to the Pt sensor and 5.5 degrees Celsius farther away from it. Experiments with making oil-in-water droplets at various temperatures and pressures result in stable droplets up to 100 degrees Celsius at atmospheric pressure. At this temperature, small gas bubbles are formed in the water phase, and then collected by the oil droplets. At a pressure of 5 bar, the droplets are stable up to at least 120 degrees Celsius. E-cat FCC particles were captured in water droplets at a rate of 150 droplets per second.",
keywords = "droplet microfluidics, E-cat FCC, elevated temperature and pressure, microreactor, Pt microheater",
author = "Vollenbroek, {J. C.} and Bomer, {Johan G.} and {Van Den Berg}, A. and M. Odijk and Nieuwelink, {A. E.} and Weckhuysen, {Bert M.} and Geitenbeek, {R. G.} and Tiggelaar, {R. M.}",
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Vollenbroek, JC, Bomer, JG, Van Den Berg, A, Odijk, M, Nieuwelink, AE, Weckhuysen, BM, Geitenbeek, RG & Tiggelaar, RM 2017, Design and characterization of a microreactor for monodisperse catalytic droplet generation at both elevated temperatures and pressures. in 2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017., 8017127, IEEE, pp. 746-751, 12th IEEE International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017, Los Angeles, United States, 9/04/17. https://doi.org/10.1109/NEMS.2017.8017127

Design and characterization of a microreactor for monodisperse catalytic droplet generation at both elevated temperatures and pressures. / Vollenbroek, J. C.; Bomer, Johan G.; Van Den Berg, A.; Odijk, M.; Nieuwelink, A. E.; Weckhuysen, Bert M.; Geitenbeek, R. G.; Tiggelaar, R. M.

2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017. IEEE, 2017. p. 746-751 8017127.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

TY - GEN

T1 - Design and characterization of a microreactor for monodisperse catalytic droplet generation at both elevated temperatures and pressures

AU - Vollenbroek, J. C.

AU - Bomer, Johan G.

AU - Van Den Berg, A.

AU - Odijk, M.

AU - Nieuwelink, A. E.

AU - Weckhuysen, Bert M.

AU - Geitenbeek, R. G.

AU - Tiggelaar, R. M.

PY - 2017/8/25

Y1 - 2017/8/25

N2 - We report the fabrication and characterization of a microfluidic droplet microreactor with potential use for single catalyst particle diagnostics. The aim is to capture Fluid Catalytic Cracking (FCC) particles in droplets and perform a probe reaction that results in a fluorescent output signal. The intensity of such a signal can be used as a measure of the catalytic activity of the particle. The microreactor features a droplet generator, platinum (Pt) microheaters, and Pt micro temperature sensors, and is able to operate at pressures up to at least 5 bar. Fluidic channels are etched in a silicon substrate, and platinum heater and sensor structures embedded in the glass cover. We have mapped the temperature inside the microchannels using nanoparticles that show temperature-dependent luminescence. At various spots on the chip, the temperature deviates by 0.86 degrees Celsius close to the Pt sensor and 5.5 degrees Celsius farther away from it. Experiments with making oil-in-water droplets at various temperatures and pressures result in stable droplets up to 100 degrees Celsius at atmospheric pressure. At this temperature, small gas bubbles are formed in the water phase, and then collected by the oil droplets. At a pressure of 5 bar, the droplets are stable up to at least 120 degrees Celsius. E-cat FCC particles were captured in water droplets at a rate of 150 droplets per second.

AB - We report the fabrication and characterization of a microfluidic droplet microreactor with potential use for single catalyst particle diagnostics. The aim is to capture Fluid Catalytic Cracking (FCC) particles in droplets and perform a probe reaction that results in a fluorescent output signal. The intensity of such a signal can be used as a measure of the catalytic activity of the particle. The microreactor features a droplet generator, platinum (Pt) microheaters, and Pt micro temperature sensors, and is able to operate at pressures up to at least 5 bar. Fluidic channels are etched in a silicon substrate, and platinum heater and sensor structures embedded in the glass cover. We have mapped the temperature inside the microchannels using nanoparticles that show temperature-dependent luminescence. At various spots on the chip, the temperature deviates by 0.86 degrees Celsius close to the Pt sensor and 5.5 degrees Celsius farther away from it. Experiments with making oil-in-water droplets at various temperatures and pressures result in stable droplets up to 100 degrees Celsius at atmospheric pressure. At this temperature, small gas bubbles are formed in the water phase, and then collected by the oil droplets. At a pressure of 5 bar, the droplets are stable up to at least 120 degrees Celsius. E-cat FCC particles were captured in water droplets at a rate of 150 droplets per second.

KW - droplet microfluidics

KW - E-cat FCC

KW - elevated temperature and pressure

KW - microreactor

KW - Pt microheater

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U2 - 10.1109/NEMS.2017.8017127

DO - 10.1109/NEMS.2017.8017127

M3 - Conference contribution

SN - 978-1-5090-3060-6

SP - 746

EP - 751

BT - 2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017

PB - IEEE

ER -

Vollenbroek JC, Bomer JG, Van Den Berg A, Odijk M, Nieuwelink AE, Weckhuysen BM et al. Design and characterization of a microreactor for monodisperse catalytic droplet generation at both elevated temperatures and pressures. In 2017 IEEE 12th International Conference on Nano/Micro Engineered and Molecular Systems, NEMS 2017. IEEE. 2017. p. 746-751. 8017127 https://doi.org/10.1109/NEMS.2017.8017127