Low-Temperature Steam Conversion of Natural Gas to Methane–Hydrogen Mixtures
A thermodynamic analysis is performed of the patterns of steam conversion of natural gas at temperatures of 300–600°C, pressures of 0.1–4 MPa and H 2 O : C molar ratios of 0.8‒1.2. Under these conditions, the reaction product is methane–hydrogen mixtures with hydrogen concentrations of 10–30 vol %....
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Published in | Catalysis in industry Vol. 12; no. 3; pp. 244 - 249 |
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Main Authors | , , , , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
Moscow
Pleiades Publishing
01.07.2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | A thermodynamic analysis is performed of the patterns of steam conversion of natural gas at temperatures of 300–600°C, pressures of 0.1–4 MPa and H
2
O : C molar ratios of 0.8‒1.2. Under these conditions, the reaction product is methane–hydrogen mixtures with hydrogen concentrations of 10–30 vol %. A rise in temperature, molar ratio Н
2
О : С, and a decrease in pressure contribute to an increase in the concentration of hydrogen in the reaction products. The thermodynamic boundaries of the process with no carbonization of the catalyst are determined. Experiments are performed to obtain methane–hydrogen mixtures from methane with an output concentration of 15–35 vol % hydrogen on industrial Ni-CrO
x
-Al
2
O
3
catalyst at 325–425°C, a H
2
O : C molar ratio of 0.8–1.0, and atmospheric pressure. It is shown that under these conditions, the process proceeds without the formation of carbon on the catalyst. |
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ISSN: | 2070-0504 2070-0555 |
DOI: | 10.1134/S2070050420030101 |