Version 1
: Received: 25 April 2024 / Approved: 25 April 2024 / Online: 25 April 2024 (16:03:38 CEST)
How to cite:
Ni, H.; Jia, X.; Yu, L.; Li, Y.; Li, P. Promotion Effect of H2S with High Concentrations on Catalytic Dry Reforming of Methane in Sour Natural Gas. Preprints2024, 2024041693. https://doi.org/10.20944/preprints202404.1693.v1
Ni, H.; Jia, X.; Yu, L.; Li, Y.; Li, P. Promotion Effect of H2S with High Concentrations on Catalytic Dry Reforming of Methane in Sour Natural Gas. Preprints 2024, 2024041693. https://doi.org/10.20944/preprints202404.1693.v1
Ni, H.; Jia, X.; Yu, L.; Li, Y.; Li, P. Promotion Effect of H2S with High Concentrations on Catalytic Dry Reforming of Methane in Sour Natural Gas. Preprints2024, 2024041693. https://doi.org/10.20944/preprints202404.1693.v1
APA Style
Ni, H., Jia, X., Yu, L., Li, Y., & Li, P. (2024). Promotion Effect of H2S with High Concentrations on Catalytic Dry Reforming of Methane in Sour Natural Gas. Preprints. https://doi.org/10.20944/preprints202404.1693.v1
Chicago/Turabian Style
Ni, H., Yuyang Li and Ping Li. 2024 "Promotion Effect of H2S with High Concentrations on Catalytic Dry Reforming of Methane in Sour Natural Gas" Preprints. https://doi.org/10.20944/preprints202404.1693.v1
Abstract
The effect of H2S with high concentrations on catalytic dry reforming of methane (DRM) process has seldom been focused on previously. Herein, a thermodynamic analysis of the DRM reactions in the presence of H2S with the concentration varying in 0-20 vol% was conducted firstly. Several typical types of catalysts including MgO, NiO/MgO and LaNiO3 in different states were prepared for executing DRM at 800 C, 0.1 MPa in the feed of 20 vol% CO2 and 20 vol% CH4 balanced with N2. The catalytic performance of each catalyst for DRM process under conditions of absence and presence of H2S was compared. A promotion effect of increasing H2S concentration on both the conversions of CO2 and CH4 and the molar yields of CO and H2 was observed on all the catalysts especially the MgO and the pristine NiO/MgO. While a significant decline in catalytic activity of either the reduced NiO/MgO or the reduced LaNiO3 catalyst after adding H2S, moderate reactant conversions still sustained. The results of process analysis and catalyst structure characterization suggest that H2S participation can contribute to the increment in CO2 and CH4 conversion, and active S-adsorbed species may play the key role of catalysis in the reactions involving H2S.
Keywords
Sour natural gas; Dry reforming of methane; High H2S concentration; Promotion effect; MgO-based catalyst; S-adsorbed species
Subject
Engineering, Energy and Fuel Technology
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
