Effect of Ag-Addition on the Catalytic and Physicochemical Properties of Ni/ZrO2 Catalyst in Oxy-Steam Reforming of CH4 and LNG Processes
| Autor: | Malgorzata I. Szynkowska, Karolina Chalupka, Natalia Stepinska, Pawel Mierczynski, Magdalena Mosinska, Waldemar Maniukiewicz |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Hydrogen hydrogen production chemistry.chemical_element 02 engineering and technology nickel catalyst lcsh:Chemical technology 010402 general chemistry 01 natural sciences Catalysis lcsh:Chemistry Steam reforming bimetallic Ag-Ni catalysts silver promotion lcsh:TP1-1185 Nickel catalyst Physical and Theoretical Chemistry Bimetallic strip Hydrogen production business.industry Fossil fuel 021001 nanoscience & nanotechnology 0104 chemical sciences ZrO2 support lcsh:QD1-999 Chemical engineering chemistry oxy-steam reforming of methane 0210 nano-technology business Liquefied natural gas |
| Zdroj: | Catalysts Volume 10 Issue 8 Catalysts, Vol 10, Iss 855, p 855 (2020) |
| ISSN: | 2073-4344 |
| DOI: | 10.3390/catal10080855 |
| Popis: | This work presents, for the first time, the catalytic studies of bimetallic Ag-Ni catalysts in the oxy-steam reforming (OSR) of liquefied natural gas (LNG) to hydrogen generation. The physicochemical properties of monometallic Ni and bimetallic catalysts were investigated using various techniques, such as: BET, TPR-H2, TPD-NH3, XRD, TG and SEM-EDS. The catalytic studies showed that the promotion of 20% Ni/ZrO2 catalyst by silver (by 1 or 2 wt.%) improves the efficiency of the produced hydrogen in the oxy-steam reforming of LNG at high temperature. The promotional effect of silver on the reducibility of a Ni/ZrO2 catalyst has been proven. The interactions between Ag and Ni have been proven, and explain the catalytic activity of the catalysts in the investigated processes. TG-DTA-MS results obtained for the spent catalysts proved that the small addition of silver to monometallic nickel catalyst reduces the amount of the carbon deposit formed on the catalyst surface during the oxy-steam reforming of LNG process. Obtained results in this work confirmed that liquid natural gas processing may become an alternative to fossil fuels and confirmed the validity of the hydrogen production via oxy-steam reforming of LNG. |
| Databáze: | OpenAIRE |
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