1999 heterogeneous catalysis, catalysts

heterogeneous catalysis, catalystsH 2000

09 - 017Synthesis and Characterization of a Novel Microporous NiobiumSilicate Catalyst. — The novel niobium silicate AM-11 is prepared understatic hydrothermal conditions starting with niobium oxalate and Si(OEt)4(H2O, autoclave, 200 ◦C, 15 d). AM-11 is an excellent catalyst for thedehydration of alcohols with high activity and selectivity, as demonstrated forthe conversions of isopropanol and tert.-butanol into propene and isobutene,respectively. — (ROCHA, JOAO; BRANDAO, PAULA; PHILLIPPOU,ANDREAS; ANDERSON, MICHAEL W.; Chem. Commun. (Cambridge)(1998) 24, 2687-2688; Dep. Chem., Univ. Aveiro, P-3810 Aveiro, Port.; EN)

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