Characterization of mesoporous stannosilicates obtained via non-hydrothermal synthesis using Na2SnO3 as the precursor

Esterification of Levulinic Acid with Different Alcohols Using Mesoporous Stannosilicates As the Catalyst

“…Sodium stannate (Na 2 SnO 3 ) was used as the Sn(IV) source and the amounts of Sn incorporated into the calcined stannosilicates SnMCM-41–25 and SnMCM-41–80 were 2.9% and 3.1%, respectively. 24 The characterization techniques revealed that silicates and stannosilicates with ordered architecture were obtained under mild reaction conditions and the formation of a mesoporous material with a well-ordered hexagonal structure was verified. The insertion of Sn into the MCM-41 lattice is also confirmed, and the structural characteristics of the support are preserved after modification with tin.…”

“…These materials have a high surface area and high average pore diameter related to a mesoporous structure and the insertion of tin results in a slight reduction in the specific surface area and an increase in the volume and pore diameter of the support, followed by an increasing in the total acidity. 24 2.1. Acid Properties.…”

“…The insertion of Sn into the MCM-41 lattice is also confirmed, and the structural characteristics of the support are preserved after modification with tin. These materials have a high surface area and high average pore diameter related to a mesoporous structure and the insertion of tin results in a slight reduction in the specific surface area and an increase in the volume and pore diameter of the support, followed by an increasing in the total acidity …”

“…As already reported by our research group, the materials MCM-41–25, MCM-41–80, SnMCM-41–25, and SnMCM-41–80 were synthesized nonhydrothermally at 25 and 80 °C. Sodium stannate (Na 2 SnO 3 ) was used as the Sn­(IV) source and the amounts of Sn incorporated into the calcined stannosilicates SnMCM-41–25 and SnMCM-41–80 were 2.9% and 3.1%, respectively . The characterization techniques revealed that silicates and stannosilicates with ordered architecture were obtained under mild reaction conditions and the formation of a mesoporous material with a well-ordered hexagonal structure was verified.…”

Fine-tuning mesoporous silica properties by a dual-template ratio as TiO2 support for dye photodegradation booster

“…Due to the carbon chains from the non-polar CTAB and gelatin groups, this causes the space framework of the silica particles to lengthen. Because gelatin with a molecular weight of 400 KDa [ 60 ] has a substantially longer chain than CTAB with a molecular weight of approximately 0.4 KDa [ [61] , [62] , [63] ], the TiO 2 -impregnated silica generated by including gelatin-CTAB has a greater pore capacity than that synthesized from CTAB or gelatin alone. Gelatin can induce the condensation of silica precursors via hydrogen bonding or electrostatic interactions between –NH 3 + and silanol species, as well as CTA + from CTAB interacting with silanol from Si precursors.…”