A FUNDAMENTAL PARAMETRIC STUDY AND REACTION KINETICS OF TOLUENE DECOMPOSITION USING NON THERMAL PLASMA

2021 ◽  
Author(s):  
Hector Gomez ◽  
Viacheslav Plotnikov ◽  
Gerardo Diaz
Keyword(s):  
Reaction Kinetics ◽  
Thermal Plasma ◽  
Parametric Study ◽  
Non Thermal Plasma ◽  
Kinetics Of

scholarly journals The behavior and modelling of the vibrational-to-translational temperature ratio at long time scales in CO2 vibrational kinetics

2019 ◽  
Vol 4 (12) ◽  
pp. 2108-2116 ◽  
Author(s):  
Sergio H. Moreno ◽  
Andrzej I. Stankiewicz ◽  
Georgios D. Stefanidis
Keyword(s):  
Reaction Kinetics ◽  
Time Scales ◽  
Thermal Plasma ◽  
Kinetics Study ◽  
Temperature Ratio ◽  
Translational Temperature ◽  
Long Time ◽  
Vibrational Kinetics ◽  
Non Thermal Plasma

Reaction kinetics study of the vibrational-to-translational temperature ratio of CO2, a crucial variable to achieve an energetically efficient dissociation in non-thermal plasma.

A parametric study of non-thermal plasma synthesis of silicon nanoparticles from a chlorinated precursor

2014 ◽  
Vol 47 (48) ◽  
pp. 485202 ◽  
Author(s):  
Yi Ding ◽  
Riku Yamada ◽  
Ryan Gresback ◽  
Shu Zhou ◽  
Xiaodong Pi ◽  
...  
Keyword(s):  
Thermal Plasma ◽  
Parametric Study ◽  
Silicon Nanoparticles ◽  
Plasma Synthesis ◽  
Thermal Plasma Synthesis ◽  
Non Thermal Plasma

scholarly journals Investigation of Non-Thermal Plasma Assisted Charcoal Gasification for Production of Hydrogen-Rich Syngas

2019 ◽  
Author(s):  
Yin Pang ◽  
Thomas Hammer ◽  
Dominik Mueller ◽  
Juergen Karl
Keyword(s):  
Reaction Kinetics ◽  
Thermal Plasma ◽  
Steam Gasification ◽  
Hydrogen Release ◽  
Rate Coefficients ◽  
Specific Enthalpy ◽  
Drop Tube ◽  
Carbon Conversion ◽  
Production Of Hydrogen ◽  
Non Thermal Plasma

The motivation of this work is to investigate experimentally the influence of non-thermal plasma (NTP) application on the reaction kinetics of atmospheric pressure steam gasification of charcoal using a thermostatically controlled drop tube reactor. A gliding-arc generator provides about 1 kW electrical power NTP. For comparison thermal gasification is investigated under comparable flow and specific energy input conditions providing additional heat to the steam. Optical temperature measurement 20 cm flow down of the NTP zone is utilized to characterize the specific enthalpy of the reactive flow. The composition of produced syngas is measured by a gas analyzer and used for the calculation of gas flow rates. The results show a NTP-enhancement on the production of individual syngas components (H2, CO, CH4), especially on hydrogen production by around 39%. The syngas-based carbon conversion and hydrogen release are calculated from the carbon and hydrogen balance between the correspondent content in syngas and in the feedstock. The NTP promoted the carbon conversion and hydrogen release by 25% and 31%, respectively. The first-order reaction kinetics are determined by data-fitting in an Arrhenius diagram. The plasma enhanced the reaction rate coefficients by 27%. Based on experimental results and other literature, possible plasma-induced reactions are proposed.

scholarly journals Plasma-Assisted Biomass Gasification in a Drop Tube Reactor at Atmospheric Pressure

2018 ◽  
Author(s):  
Yin Pang ◽  
Leo Bahr ◽  
Peter Fendt ◽  
Lars Zigan ◽  
Stefan Will ◽  
...  
Keyword(s):  
Reaction Kinetics ◽  
Thermal Plasma ◽  
Atmospheric Pressure ◽  
Drop Tube ◽  
Carbon Conversion ◽  
Gas Temperature ◽  
Gasification Process ◽  
Operation Conditions ◽  
Tube Reactor ◽  
Non Thermal Plasma

Compared to conventional allothermal gasification of solid fuels (e.g. biomass, charcoal, lignite etc.), plasma-assisted gasification offers an efficient method to apply energy into the gasification process to increase the flexibility of operation conditions and to increase the reaction kinetics. In particular, non-thermal plasmas (NTP) are promising, in which thermal equilibrium is not reached and electrons have substantially higher mean energy than gas molecules. Thus it is generally assumed that in NTP the supplied energy is utilized more efficiently for generating free radicals initiating gasification reactions than thermal plasma processes. In order to investigate this hypothesis, we compared purely thermal to non-thermal plasma assisted gasification of biomass in steam in a drop tube reactor at atmospheric pressure. The NTP was provided by means of gliding arcs between two electrodes aligned in the inlet steam flow. Electric power of about 1 kW was supplied using a high voltage generator operating at frequencies between 70 and 150 kHz and voltage amplitudes up to 10 kV. A laser-assisted optical method (Raman spectroscopy) was applied for measuring the gas temperature both in the conventionally heated steam and flow-down of the visible plasma filaments of the gliding arcs. Reaction yields and rates were evaluated using these measured gas temperatures. The first experimental results have shown that the non-thermal plasma not only promotes the carbon conversion of the fuel particles, but also accelerates the reaction kinetics. The carbon conversion is increased by nearly 10% using wood powder as the fuel. With charcoal powder more than 3% are converted into syngas.

Impact Of Synthesis Route on the Water Oxidation Kinetics of Hematite Photoanodes

2020 ◽  
Author(s):  
Camilo A. Mesa ◽  
Ludmilla Steier ◽  
Benjamin Moss ◽  
Laia Francàs ◽  
James E. Thorne ◽  
...  
Keyword(s):  
Oxygen Vacancy ◽  
Reaction Kinetics ◽  
Water Oxidation ◽  
Oxidation Kinetics ◽  
Oxidation Reaction ◽  
Charge Accumulation ◽  
Optical Signals ◽  
Current Voltage ◽  
Voltage Performance ◽  
Kinetics Of

<p><i>Operando</i> spectroelectrochemical analysis is used to determine the water oxidation reaction kinetics for hematite photoanodes prepared using four different synthetic procedures. Whilst these photoanodes exhibit very different current / voltage performance, their underlying water oxidation kinetics are found to be almost invariant. Lower photoanode performance was found to correlate with the observation of optical signals indicative of charge accumulation in mid-gap oxygen vacancy states, indicating these states do not contribute directly to water oxidation.</p>

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