Activity and characterization of anion-modified iron(III) oxides as catalysts for direct liquefaction of low pyrite coals
| Autor: | John W. Tierney, Jianli Hu, Irving Wender, Vivek R. Pradhan |
|---|---|
| Rok vydání: | 1993 |
| Předmět: |
business.industry
General Chemical Engineering Inorganic chemistry Iron oxide Energy Engineering and Power Technology Mineralogy Liquefaction engineering.material complex mixtures Catalysis Ion chemistry.chemical_compound Fuel Technology chemistry engineering Composition (visual arts) Coal Pyrite Dispersion (chemistry) business |
| Zdroj: | Energy & Fuels. 7:446-454 |
| ISSN: | 1520-5029 0887-0624 |
| DOI: | 10.1021/ef00040a002 |
| Popis: | In previous papers, we reported on the catalytic activity of finely divided sulfated iron oxides for the direct liquefaction of coals containing between 0.2 and 2.5 wt% of pyrite (Energy Fuels, 1991, 5, 497-507). The addition of small amounts of sulfated iron oxide catalysts (3500-7000 ppm relative to coal) significantly improved coal conversions and oil yields in the direct liquefaction of these coals. However, the large amounts of inherent pyrite present clouded the interpretation of catalyst composition, dispersion, and activity of the added sulfated iron oxide catalysts. In this paper, we address the quantification of catalyst activity and characterization, before and after reaction, of somepreviously reported and some newly synthesized anion-modified iron oxide catalysts by using two coals with very low inherent contents of pyrite |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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