Development of oxide-supported nickel-based catalysts for catalytic decomposition of dimethyl sulfide
| Autor: | Takashi Mukoyama, Nao Koide, Shigeo Satokawa, Naohiro Shimoda, Masaki Kasahara |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
inorganic chemicals
Nickel sulfide General Chemical Engineering Nickel oxide Hydrogen sulfide Organic Chemistry Inorganic chemistry Energy Engineering and Power Technology chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Sulfur 0104 chemical sciences Catalysis Nickel chemistry.chemical_compound Fuel Technology chemistry Dimethyl sulfide 0210 nano-technology Chemical decomposition |
| Zdroj: | Fuel. 232:485-494 |
| ISSN: | 0016-2361 |
| Popis: | We have developed a heterogeneous catalyst for the decomposition and removal of dimethyl sulfide used as an odorant in fuels such as city gas in residential fuel cell systems. For the dimethyl sulfide decomposition at 500 °C over various oxides such as γ-Al2O3, TiO2, ZrO2, CeO2, SiO2, and MgO, it was found that adsorption of dimethyl sulfide and other products containing sulfur components, sulfurization of metal oxides, and decomposition of dimethyl sulfide occurred. Namely, dimethyl sulfide could be removed from the reaction gas by several reactions. Furthermore, the loading of the nickel component on γ-Al2O3 as a metal component led to high decomposition performance. Based on the XRD, H2-TPR, and UV–Vis spectra analyses, after the preparation, this catalyst exists in the state of nickel oxide and nickel aluminate supported on γ-Al2O3. However, upon exposure to the dimethyl sulfide or hydrogen sulfide feed, the sulfurization reaction of nickel species proceeds, leading to the transformation of the material to nickel sulfide and the enhancement of the decomposition reaction. Furthermore, based on the results of the optimization of the nickel loading amount, we revealed that the 10 wt% supported catalyst was the best catalyst. |
| Databáze: | OpenAIRE |
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