Tantalum pillared montmorillonite .2. Acidic and catalytic properties
(1997) Journal of Catalysis — Vol. 168, n° 2, p. 463-470 (1997)
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- Abstract
- The acidic and catalytic properties of a series of Ta-PILCs synthesized with a different initial tantalum content were characterized by adsorption of gaseous probe molecules (TPD of ammonia and FTIR spectra of absorbed pyridine) and by the test reaction of 1-butanol dehydration. A large increase of acidity was noted in Ta-PILCs compared to Na-montmorillonite or tantalum oxide. Cross-linking pillars and silica layers of the clay induce stronger Lewis and new Bronsted sites. The lack of basic sites formation is evidenced by the dehydration of 1-butanol to butene selectivity (100%). The incorporation of the tantalum oxide between the montmorillonite sheets produce, within Ta-PILC, acid centers of the same nature as observed for the silicon-tantalum mixed oxides. (C) 1997 Academic Press.
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Guiu, G., & Grange, P. (1997). Tantalum pillared montmorillonite .2. Acidic and catalytic properties. Journal of Catalysis, 168(2), 463-470. https://doi.org/10.1006/jcat.1997.1638 (Original work published 1997)