Sulfonic acid-functionalized mesoporous silicas: Microcalorimetric characterization and catalytic performance toward biodiesel synthesis

Cross-linked poly(vinyl alcohol)/sulfonated nanoporous silica hybrid membranes for proton exchange membrane fuel cell

“…At end, the results of Table 5 show proton conductivity and T m of SBA-15-ph-SO 3 H-based membrane are higher than that of SBA-15-propyl-SO 3 H-based membrane and the water uptake is equal for both. It was showed that the strength of acid sites of SBA-15-phenyl-SO 3 H is higher than that of SBA-15-propyl-SO 3 H [19].…”

“…The sulfonic acid groups can help to speed up proton transport through nanopore channels. Propyl sulfonic acid groups can be covalently incorporated into nanoporous silica [19]. SBA-15-propyl-SO 3 H has hexagonal structure, very large surface area, ordered pore structure and extremely narrow pore size distribution with easily accessible acid sites.…”

Facile synthesis of magnetic core-mesoporous shell structured sub-microspheres decorated with NiO nanoparticles for magnetic recyclable separation of proteins

“…Mesoporous nano/micro-spheres have been vigorously explored in the fields of drug delivery, cell research, separation, and adsorption, due to their large surface area, tunable pore and particle sizes, high loading capacity for guest molecules, and easy functionalization [1][2][3][4][5][6][7]. In particular, magnetic mesoporous core-shell nanocomposite spheres have attracted great attention in biotechnology and biomedicine such as magnetic resonance imaging (MRI), targeted drug delivery, and bio-separation, owing to their unique magnetic separability, MRI property, and low toxicity under body's natural conditions [8][9][10][11][12][13][14].…”

Heterogeneous Synthesis of Indole-2-Carboxylic Esters Via Bischler Cyclization Under the Catalysis of Sulfonic Acid-Functionalized SBA-15 Silicas

“…Compared with conventional solid acids, such as zeolites, ion exchange resins, heteropoly acids etc., these sulfonated mesoporous silicas have their own unique features, including mesoscopic pores, large surface area, easy accessibility and uniform distribution of the acid sites, as well as excellent chemical and thermal stability. Since their discovery [8,9], sulfonated mesoporous silicas have been successfully applied in acid-catalyzed esterifications [10][11][12][13][14][15][16], condensations [17][18][19][20], etherifications [21][22][23], additions [24,25], rearrangements [26,27], Friedel-Crafts reactions [28,29] and so on [30][31][32][33][34][35][36][37][38][39]. In most cases, these solid acidic materials not only led to more environmentally benign processes, but also exhibited much better catalytic performance than other homogeneous and conventional heterogeneous ones.…”