Identification of the origin of TiO2 deposits surrounding a used hydrodesulphurization catalyst
| Autor: | David J. Coates, Sidney S. Pollack, James Evans |
|---|---|
| Rok vydání: | 1982 |
| Předmět: |
Bituminous coal
Anatase Materials science business.industry General Chemical Engineering Organic Chemistry Metallurgy geology.rock_type technology industry and agriculture geology Energy Engineering and Power Technology Liquefaction chemistry.chemical_element respiratory system complex mixtures Catalysis Titanium oxide Fuel Technology Chemical engineering chemistry Coal Crystallite business Titanium |
| Zdroj: | Fuel. 61:1245-1248 |
| ISSN: | 0016-2361 |
| DOI: | 10.1016/0016-2361(82)90028-x |
| Popis: | Mineral matter from an Eastern high volatile class A bituminous coal (Homestead, Kentucky) has been examined by scanning transmission electron microscopy and energy dispersive X-ray analysis to determine the presence of titanium-containing minerals. Titanium oxide in the form of anatase (TiO 2 ) has been identified. Crystals of anatase with a similar morphology have been found deposited around particles of Co- Mo catalyst used to promote liquefaction of the coal. This deposit has a poisoning effect on the catalytic capability of the particles. It has been suggested that the origin of the anatase is either as organically bound titanium in the coal that oxidizes during the liquefaction process or as anatase crystallites within the coal that simply coalesce around the catalyst particles. The present observations indicate that most or all of the anatase deposited on and around the catalyst was present as anatase in the coal. |
| Databáze: | OpenAIRE |
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