Progress of the Application of Mesoporous Silica-Supported Heteropolyacids in Heterogeneous Catalysis and Preparation of Nanostructured Metal Oxides

Abstract

Mesoporous silica molecular sieves are a kind of unique catalyst support due to their large pore size and high surface area. Several methods have been developed to immobilize heteropolyacids (HPAs) inside the channels of these mesoporous silicas. The mesoporous silica-supported HPA materials have been widely used as recyclable catalysts in heterogeneous systems. They have shown high catalytic activities and shape selectivities in some reactions, compared to the parent HPAs in homogeneous systems. This review summarizes recent progress in the field of mesoporous silica-supported HPAs applied in the heterogeneous catalysis area and preparation of nanostructured metal oxides using HPAs as precursors and mesoporous silicas as hard templates.

Optical and fluorescence properties of MgO nanoparticles in micellar solution of hydroxyethyl laurdimonium chloride

“…Metal oxides are well known because of their industrial applications as adsorbents, catalysts, and catalyst supports [1,2]. Magnesium oxide (MgO) is an important functional metal oxide that has been widely used in various fields such as catalysis, refractory materials, paints, and superconductors [3,4].…”

Multinuclear Solid-state NMR Investigation of Nanoporous Silica Prepared by Sol-gel Polymerization Using Sodium Silicate

“…[1][2][3][4][5] Silica is the most highly porous nanostructured material currently available, and has a large surface area, high porosity, and low bulk density. 6 In contrast with silica prepared with expensive alkoxides like tetraethoxysilane (TEOS), 7 our silica can be prepared in mass production for use in the industry by sol-gel polymerization of inexpensive sodium silicate precursor and dried at atmospheric pressure for green chemistry.…”

Polyoxomolybdates as Green Catalysts for Aerobic Oxidation

“…Systematic investigation of catalysis by POMs began in the early 1970s. Some of the major achievements of POM based compounds in the field of catalysis have been reviewed by number of groups [28][29][30][31][32][33][34][35][36][37][38][39]. Numbers of patents describing use of POMs based compounds in catalysis are also available [40][41][42][43][44][45][46][47][48][49][50][51][52][53][54].…”