Controlled synthesis of mesoporous NbMSU-X: influence of the preparation route

摘要

Mesoporous NbMSU-X has been successfully prepared for the first time by using tetraethyl orthosilicate, ammonium tris(oxalate) complex of niobium(V) and fatty alcohol polyoxyethylenepolyoxypropylene ether as the source of silicone, niobium and mesostructure-directing agent, respectively and by variation of the pH value of the synthesis gel. The Nb-MSU materials were characterized by XRD, TEM, N_2 adsorption-desorption, FTIR and DRUV-Vis techniques. The TEM images confirmed that NbMSU took on worm-like mesostructure similar to MSU-1. The influence of the synthesis conditions on the niobosilicate porous structure has been analyzed.