Preparation, characterization and catalytic activity studies of organoruthenium‐supported polyoxotungstates on SBA‐15

Abstract

Organoruthenium-supported polyoxometalates [(RuC 6 H 6 )XW 9 O 34 ] 7À (XWRu; X = As, P) were selected as samples to study their catalytic activities towards the solvent-free oxidation of n-hexadecane. First of all, the XWRu were deposited on 3-aminopropyltriethoxysilanemodified SBA-15 to prepare solid catalysts, which were characterized using powder X-ray diffraction, nitrogen adsorption measurements, Fourier transform infrared reflectance spectroscopy and X-ray photoelectron spectroscopy. Subsequently, their catalytic performances and stabilities were assessed through the oxidation of n-hexadecane using air as the oxygen source without any additives and solvents, and the influences of the loading amount, catalyst amount, reaction time and reaction temperature on the catalytic activities were investigated. The results indicated the influence of the central heteroatoms X of XWRu on the catalytic activities.

Sustainable Routes for the Synthesis of Renewable Adipic Acid from Biomass Derivatives

“…[115] Among all mentioned catalysts, phosphotungstic acid (PTA) shows the highest activity, but its poor stability and high solubility in the reaction solution hinder its large‐scale application [116] . A viable strategy for improving the performance of PTA is to incorporate them into solid carriers, such as silica, [117] molecular sieves, [118] and metal oxides [119] . Metal‐organic frameworks (MOFs), a kind of novel crystalline porous material, has been considered as a candidate for the catalyst carriers owing to its high surface areas, modifiable compositions and easy functionalization [120] .…”

Self-assembly of a unique triangle-like tungstovanadate containing pentagonal {(WO7)W3(SnR)2} cluster

“…[4][5][6] Importantly, the introduction of some organic or organometallic groups into the POM system can adjust the redox, acid-base properties and solubility of POMs, which can enhance some performances and functions of POMs and then extend their application in biomedicine, materials science, optics and catalysis fields. [7][8][9][10][11][12] At present, many OM-POMs, including POMs modified with organorhodium, organoruthenium, organoantimony, organotin, etc. have been successfully synthesized under certain conditions.…”