金井隆一君が中心となって行ったWO3/Al2O3触媒によるグリセロール脱水反応に関する研究成果がMolecular Catalysisl誌 (Elsevier)にAcceptされました。Our paper reporting the dehydration of glycerol to acrolein by WO3/Al2O3 was accepted in Molecular Catalysis (Elsevier).

金井隆一君が中心となって行ったWO3/Al2O3触媒によるグリセロール脱水反応に関する研究成果がMolecular Catalysisl誌 (Elsevier)にAcceptされました。Our paper reporting the dehydration of glycerol to acrolein by WO3/Al2O3 was accepted in Molecular Catalysis (Elsevier).

 

「Acidic property and gas-phase glycerol-dehydration activity of WO3/Al2O3 catalysts」.

 

Kanai, Ryuishi; Yagi, Fuyuki; Omata, Kaori; Miura, Hiroki; Shishido, Tetsuya

 

Molecular Catalysis, 2023, 550, 113588. DOI: 10.1016/j.mcat.2023.113588 

 

The acidic property of WO3/Al2O3 catalysts loaded with WO3 (5–37 wt%) and their activity for gas-phase glycerol dehydration were investigated. Temperature-programmed desorption of NH3 revealed the formation of weak acid sites (the enthalpy of NH3 desorption; ΔHNH3 <110 kJ mol–1) on WO3/Al2O3. Infrared spectra of adsorbed pyridine indicated that a part of Lewis acid sites of WO3/Al2O3 was converted to Brønsted acid sites by water vapor treatment. The ΔH‡–ΔS‡ relationship for glycerol dehydration over WO3/Al2O3 and H-ZSM-5 indicated a weaker interaction of WO3/Al2O3 catalyst with the reaction intermediate than that of H-ZSM-5. The coke species deposited over WO3/Al2O3 and H-ZSM-5 were confirmed to consist of C3–C4 compounds, acrolein, benzene, toluene, xylene, glycerol, indenes, naphthalenes, and anthracenes (or phenanthrenes); fewer polyaromatic compounds were formed over WO3/Al2O3. For WO3/Al2O3, the weak acid strength of the Brønsted acid sites resulted in high durability for glycerol dehydration.