Ti-MCM-41 supported phosphotungstic acid: An effective and environmentally benign catalyst for epoxidation of styrene

Adsorption process of methyl orange dye onto mesoporous carbon material–kinetic and thermodynamic studies

“…Mesoporous materials, whose pore sizes range from 2 to 50 nm, are widely used in various fields such as adsorbents [13][14][15][16], heterogeneous catalysis [17][18][19], gas separation [20,21], energy storage [22], and drug delivery [23]. Mesoporous carbon, CMK-3, is a fascinating material and exhibits high surface area, ordered pore structure, high pore volume, narrow pore size distribution, and tunable pore diameters [24,25].…”

Calcium Salts of Tungstophoric Acid Supported on Silica as Novel Catalysts for Tetrahydrofuran Polymerization

“…The first weight loss stage before 100°C was associated with the elimination of some hydration water and physically absorbed water derived from silica and heteropolyacid salt, and the second loss stage in the region of 100-500°C corresponded to the loss of constitutional water and the beginning of decomposition of heteropolyacid salt's Keggin structure [34]. When the catalyst CaHPW/SiO 2 was calcined above 500°C, no appreciable weight loss was observed in the TGA pattern, which indicated that Keggin anions have been transformed into oxides P 2 O 5 and WO 3 [35]. From the TGA characterization, it could be inferred that with the introduction of calcium cation, the heteropolyacid salt's thermal stability was not remarkably improved.…”

Photocatalytic reduction of CO2 using molybdenum-doped titanate nanotubes in a MEA solution

“…To improve the CO 2 reduction ability of photocatalysts, one of the key factors is to increase the surface area of photocatalysts [55][56][57][58] . The pore characteristics of P25 (TiO 2 ), T-X and Mo-T-X are listed in Table 1.…”