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Gas‐Phase Photochemical Overall H 2 S Splitting by UV Light Irradiation
Author(s) -
Baldovi Herme G.,
Albero Josep,
Ferrer Belen,
Mateo Diego,
Alvaro Mercedes,
García Hermenegildo
Publication year - 2017
Publication title -
chemsuschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.412
H-Index - 157
eISSN - 1864-564X
pISSN - 1864-5631
DOI - 10.1002/cssc.201700294
Subject(s) - irradiation , water splitting , photochemistry , stoichiometry , hydrogen , hydrogen sulfide , chemistry , catalysis , gas phase , phase (matter) , methane , biogas , quantum efficiency , photocatalysis , materials science , optoelectronics , sulfur , organic chemistry , physics , ecology , nuclear physics , biology
Splitting of hydrogen sulfide is achieved to produce value‐added chemicals. Upon irradiation at 254 nm in the gas phase and in the absence of catalysts or photocatalysts at near room temperature, H 2 S splits into stoichiometric amounts of H 2 and S with a quantum efficiency close to 50 %. No influence of the presence of CH 4 and CO 2 (typical components in natural gas and biogas in which H 2 S is an unwanted component) on the efficiency of overall H 2 S splitting was observed. A mechanism for the H 2 and S formation is proposed.