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Synthesis and characterization of cobalt modified LTL-type zeolite by Consuelo Montes de C; Aı́da Luz Villa de P; M.M Ramı́rez-Corredores is a Materials Science article available to read on EtoBox.

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Cobalt modified LTL-type zeolite (K-CoL) was hydrothermally synthesized, partially substituting framework aluminum for cobalt atoms. The isomorphous substitution of cobalt into the zeolite structure was confirmed by XRD, TGA, UV-VIS, XPS and chemical analyses. Cobalt ions were removed together with K + following NH 4 Cl exchange, indicating Co 2+ also to be present as balancing or occluded cations into the channels of K-CoL. The epoxidation of R-(+)-limonene in the presence of a sacrificial aldehyde over K-CoL yields 70.7% cis-1,2-epoxide. Besides, the activity of reused K-CoL was more stable after three consecutive runs than a Co impregnated sample containing the same amount of cobalt as in K-CoL.

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Author

Consuelo Montes de C; Aı́da Luz Villa de P; M.M Ramı́rez-Corredores

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0926-860X)

Published

2000

Language

EN

Field

Materials Science (Physical Sciences)