Alternative formulations of regenerable flue gas cleanup catalysts. Progress report, December 1, 1992--February 28, 1993
In the work done so far, we have examined the properties of adsorbents prepared by the novel method of depositing a layer of the precursor (metal acetylacetonates) on the alumina surface. These samples were activated by decomposing the precursors to their oxides. It was possible to obtain a fairly predictable trend in the SO{sub 2} adsorption properties of the adsorbents as long as the metal acacs did not dissociate in solution. This was observed in the case of the magnesium supported samples. Lithium supported samples exhibited a high SO{sub 2} pickup rate at low metal loadings on alumina but the incremental SO{sub 2} pickup rate at low metal loadings on alumina but the incremental SO{sub 2} pickup was poor; one explanation for this observation is the dissociation of Li(acac) prior to its adsorption on alumina from the solution. We decided to investigate the properties of adsorbents prepared by aqueous impregnation to investigate the virtues of non-ionizing vs. ionizing precursors. We also carried out infrared investigations of the supported lithium precursor, in an attempt to determine the nature of this material. Conductivity analyses, presented in earlier reports, suggest that the Li(acac) ionizes in methanol solution. Elemental analyses, also presented in earlier reports, indicate a carbon/lithium ratio of 1.6 for the supported precursor, much less than the value of 5 expected from the precursor stoichiometry. Based on our earlier success using infrared spectroscopy for characterization of the magnesium and copper precursors, we decided to investigate the nature of the supported lithium complex using the same technique.
- Research Organization:
- Clark Atlanta Univ., GA (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-90PC90292
- OSTI ID:
- 10156608
- Report Number(s):
- DOE/PC/90292-T10; ON: DE93014965
- Resource Relation:
- Other Information: PBD: 1993
- Country of Publication:
- United States
- Language:
- English
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