Catalytic Properties of Various Oxides and Mesoporous Materials Containing Niobium and Sulfate Ions, in the Oxidation Reaction of 1-Octanol

Abstract

Several types of solid acid catalysts were prepared based on oxides like (ZrO 2 , TiO 2 , HfO 2 , MCM-41 and SBA-15). Each catalyst was subjected separately to two types of impregnations: sulfate ions and niobium. The catalytic activity of these solids was tested in the oxidation reaction of 1-octanol. These catalysts showed acidic and redox characters. MCM-41 and SBA-15 materials showed higher redox catalytic activities through the formation of (octyl octanoate, peroxyacetal and octanal). Our interest was focused on obtaining the ester (octyl octanoate) with high yields.

Thermo-oxidative aging of linear and branched alcohols as stability criterion for their use as e-fuels

“…Several research groups have investigated the oxidation of primary alcohols with the aid of catalysts for synthesis purposes (to increase yield and product selectivity). [28][29][30][31][32][33][34][35][36] For example, Ishida et al, 30 Kotolevich et al, 32 Jenzer et al 34 and Iwahama et al 35 oxidized 1-octanol using various catalysts and found several aging products (aldehydes, acids, esters). Hussein et al 31 also found an ether and a peroxy-acetal as aging products.…”

“…[28][29][30][31][32][33][34][35][36] For example, Ishida et al, 30 Kotolevich et al, 32 Jenzer et al 34 and Iwahama et al 35 oxidized 1-octanol using various catalysts and found several aging products (aldehydes, acids, esters). Hussein et al 31 also found an ether and a peroxy-acetal as aging products. Guillard et al 36 oxidized 1-octanol with ultrasound and photocatalysis and detected several aldehydes, alkanes and alkenes as aging products.…”