Surface acidity and catalytic activity of aged /SnO2 catalyst supported with WO3

Monometallic and bimetallic Cu–Ag MOF/MCM-41 composites: structural characterization and catalytic activity

“…The spectra show two bands at 1507 and 1421 cm À1 on Ag-MOF/MCM-41 composite and four bands in the samples Cu-MOF/MCM-41, Cu-Ag MOF/MCM-41 composites and Cu-Ag MOF at 1449, 1487, 1507 and 1620 cm À1 which are assigned to the adsorbed pyridine on Lewis acidic sites. [81][82][83]…”

Enhanced Methane Sensing Properties of WO3 Nanosheets with Dominant Exposed (200) Facet via Loading of SnO2 Nanoparticles

“…SnO 2 has become one of the most widely studied nanomaterials due to its unique properties [2,26]. The SnO 2 -WO 3 hybrid structure has received great attention because SnO 2 and WO 3 have different degrees of reaction to various redox gases, moderate resistivity, significant catalytic activity, high stability, low cost and unique gas-sensing characteristics [27,28,29,30,31,32,33,34]. When an n–n type heterojunction is formed at the interface between SnO 2 and WO 3 , the Fermi levels of the two constitute materials across the heterojunction equilibrate to the same energy level leading to charge transfer and consequently the formation of a space charge region serving as the basis of the increase of sensor response [35].…”

Study of the esterification reaction of acetic acid with n -butanol over supported WO 3 catalysts

“…Indeed, in the last decade, a high number of studies showed that tungsta [2][3][4][5][6][7][8][9], molybdena [10][11][12], vanadia [13,14] and niobia [15] supported on appropriate supports were effective catalysts for the esterification reaction, one of the fundamental acid-catalyzed reactions.…”