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)
    79 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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    title = "Design and characterization of a microreactor for monodisperse catalytic droplet generation at both elevated temperatures and pressures",
    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.",
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    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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    DO - 10.1109/NEMS.2017.8017127

    M3 - Conference contribution

    AN - SCOPUS:85030861102

    SN - 978-1-5090-3060-6

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    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