10.6084/m9.figshare.2752789
A. N. Startsev
A.
N. Startsev
O. V. Kruglyakova
O.
V. Kruglyakova
Yu. A. Chesalov
Yu.
A. Chesalov
E. A. Paukshtis
E.
A. Paukshtis
V. I. Avdeev
V.
I. Avdeev
S. Ph. Ruzankin
S. Ph.
Ruzankin
A. A. Zhdanov
A. A.
Zhdanov
I. Yu. Molina
I.
Yu. Molina
L. M. Plyasova
L.
M. Plyasova
Low-temperature catalytic decomposition of hydrogen sulfide on metal catalysts under layer of solvent
Taylor & Francis Group
2016
H2S decomposition
hydrogen production
diatomic gaseous sulfur
triplet and singlet diatomic sulfur
DFT calculations
IR and Raman spectra
sulfur utilization
2016-02-24 16:10:12
Journal contribution
https://tandf.figshare.com/articles/journal_contribution/Low_temperature_catalytic_decomposition_of_hydrogen_sulfide_on_metal_catalysts_under_layer_of_solvent/2752789
<p>When hydrogen sulfide decomposition {2 H<sub>2</sub>S ↔ 2 H<sub>2</sub> + S<sub>2</sub><sup>(gas)</sup>} is carried out in the flow regime at room temperature on metal catalysts placed in a liquid capable of dissolving H<sub>2</sub>S and sulfur, the reaction equilibrium can be significantly (up to 100%) shifted to the right yielding the desired product – hydrogen. The process efficiency was demonstrated using aqueous solutions of monoethanolamine (MEA), sodium carbonate, which is widely used in industry for H<sub>2</sub>S absorption from tail gases, and aqueous hydrazine as examples. IR and Raman spectroscopy data demonstrated that sulfur obtained in the solutions is in the form of diatomic molecules. DFT calculations showed that diatomic sulfur forms weakly bound coordinative complexes with solvent molecules. Some problems related to sulfur accumulation and recovery from the solvents are discussed.</p>