Combustion of hydrogen-oxygen mixture in electrochemically generated nanobubbles

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Abstract

Ignition of exothermic chemical reactions in small volumes is considered as difficult or impossible due to the large surface-to-volume ratio. Here observation of the spontaneous reaction is reported between hydrogen and oxygen in bubbles whose diameter is smaller than a threshold value around 150 nm. The effect is attributed to high Laplace pressure and to fast dynamics in nanobubbles and is the first indication on combustion in the nanoscale. In this study the bubbles were produced by water electrolysis using successive generation of H2 and O2 above the same electrode with short voltage pulses in the microsecond range. The process was observed in a microsystem at current densities > 1000 A/cm2 and relative supersaturations > 1000.
Original languageEnglish
Article number035302
Number of pages4
JournalPhysical review E: Statistical, nonlinear, and soft matter physics
Volume84
Issue number3
DOIs
Publication statusPublished - 22 Sep 2011

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Combustion
Bubble
Hydrogen
Oxygen
bubbles
Ignition
oxygen
hydrogen
electrolysis
supersaturation
Threshold Value
Laplace
Chemical Reaction
ignition
Electrode
chemical reactions
indication
Voltage
current density
Water

Keywords

  • EWI-20902
  • IR-78664
  • METIS-281599

Cite this

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title = "Combustion of hydrogen-oxygen mixture in electrochemically generated nanobubbles",
abstract = "Ignition of exothermic chemical reactions in small volumes is considered as difficult or impossible due to the large surface-to-volume ratio. Here observation of the spontaneous reaction is reported between hydrogen and oxygen in bubbles whose diameter is smaller than a threshold value around 150 nm. The effect is attributed to high Laplace pressure and to fast dynamics in nanobubbles and is the first indication on combustion in the nanoscale. In this study the bubbles were produced by water electrolysis using successive generation of H2 and O2 above the same electrode with short voltage pulses in the microsecond range. The process was observed in a microsystem at current densities > 1000 A/cm2 and relative supersaturations > 1000.",
keywords = "EWI-20902, IR-78664, METIS-281599",
author = "Svetovoy, {Vitaly B.} and Sanders, {Remco G.P.} and Lammerink, {Theo S.J.} and Elwenspoek, {Miko C.}",
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T1 - Combustion of hydrogen-oxygen mixture in electrochemically generated nanobubbles

AU - Svetovoy, Vitaly B.

AU - Sanders, Remco G.P.

AU - Lammerink, Theo S.J.

AU - Elwenspoek, Miko C.

N1 - eemcs-eprint-20902

PY - 2011/9/22

Y1 - 2011/9/22

N2 - Ignition of exothermic chemical reactions in small volumes is considered as difficult or impossible due to the large surface-to-volume ratio. Here observation of the spontaneous reaction is reported between hydrogen and oxygen in bubbles whose diameter is smaller than a threshold value around 150 nm. The effect is attributed to high Laplace pressure and to fast dynamics in nanobubbles and is the first indication on combustion in the nanoscale. In this study the bubbles were produced by water electrolysis using successive generation of H2 and O2 above the same electrode with short voltage pulses in the microsecond range. The process was observed in a microsystem at current densities > 1000 A/cm2 and relative supersaturations > 1000.

AB - Ignition of exothermic chemical reactions in small volumes is considered as difficult or impossible due to the large surface-to-volume ratio. Here observation of the spontaneous reaction is reported between hydrogen and oxygen in bubbles whose diameter is smaller than a threshold value around 150 nm. The effect is attributed to high Laplace pressure and to fast dynamics in nanobubbles and is the first indication on combustion in the nanoscale. In this study the bubbles were produced by water electrolysis using successive generation of H2 and O2 above the same electrode with short voltage pulses in the microsecond range. The process was observed in a microsystem at current densities > 1000 A/cm2 and relative supersaturations > 1000.

KW - EWI-20902

KW - IR-78664

KW - METIS-281599

U2 - 10.1103/PhysRevE.84.035302

DO - 10.1103/PhysRevE.84.035302

M3 - Article

VL - 84

JO - Physical review E: covering statistical, nonlinear, biological, and soft matter physics

JF - Physical review E: covering statistical, nonlinear, biological, and soft matter physics

SN - 2470-0045

IS - 3

M1 - 035302

ER -