6533b859fe1ef96bd12b8081

RESEARCH PRODUCT

Selective oxidative activation of isobutane on a novel vanadium-substituted bimodal mesoporous oxide V-UVM-7

Lenin HuertaPedro AmorósV. Cortés CorberánDaniel Beltrán-porter

subject

Inorganic chemistryVanadiumchemistry.chemical_elementMethacroleinGeneral ChemistryHeterogeneous catalysisCatalysisCatalysischemistry.chemical_compoundAtranechemistryTransition metalIsobutaneMesoporous material

description

Abstract New vanado-silicates with a bimodal mesoporous system (V-UVM-7) and high vanadium contents (Si/V ≥ 7) have been prepared by a modification of the so-called atrane method. Its morphology consists of aggregation of nano-particles with V-MCM-41 structure, creating a second broader porous system in their interparticle space. Its structure allows to incorporate a high V contents into tetrahedral sites of the framework while keeping vanadium dispersion. V-UVM-7 catalysts are very active and selective for the direct transformation of isobutane to isobutene and methacrolein. Total conversion and methacrolein-to-isobutene ratio in the products increased with increasing vanadium contents. The catalytic performance comparison with homologous V-MCM-41 catalysts revealed an influence of the channel length on the products distribution.

https://doi.org/10.1016/j.cattod.2006.05.016