Kinetics of hydrogen sulfide decomposition in a DBD plasma reactor operated at high temperature

E, Linga Reddy and Karuppiah, J and Ch, Subrahmanyam (2013) Kinetics of hydrogen sulfide decomposition in a DBD plasma reactor operated at high temperature. Journal of Energy Chemistry, 22 (3). pp. 382-386. ISSN 2095-4956

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The present study investigates the kinetics of hydrogen sulfide (H 2 S) decomposition into hydrogen and sulfur carried out in a nonthermal plasma dielectric barrier discharge (NTP-DBD) reactor operated at ∼ 430 K for in situ removal of sulfur condensed inside the reactor walls. The dissociation of H 2 S was primarily initiated by the excitation of carrier gas (Ar) through electron collisions which appeared to be the rate determining step. The experiments were carried out with initial concentration of H 2 S varied between 5 and 25 vol% at 150 mL/min (at standard temperature and pressure) flow rate in the input power range of 0.5 to 2 W. The reaction rate model based on continuous stirred tank reactor (CSTR) model failed to explain the global kinetics of H 2 S decomposition, probably due to the multiple complex reactions involved in H 2 S decomposition, whereas Michaelis-Menten model was satisfactory. Typical results indicated that the reaction order approached zero with increasing inlet concentration.

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IITH Creators:
IITH CreatorsORCiD
Ch, Subrahmanyam
Item Type: Article
Uncontrolled Keywords: dielectric barriar discharge; hydrogen sulfide; kinetics; temperature
Subjects: Chemistry > Inorganic chemistry
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Divisions: Department of Chemistry
Depositing User: Team Library
Date Deposited: 10 Sep 2015 11:10
Last Modified: 04 Dec 2017 06:34
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