【摘 要】
：
Biodiesel has emerged as a non-toxic,biodegradable,and re-newable fuel substitute that can be readily produced vio the esterification reaction of free fatty acids.The present work explores the potential of 12-tungstophosphoric acid(TPA) anchored two-dimen
【机 构】
：
State Key Laboratory of Inorganic Synthesis & Preparative Chemistry,Col-lege of Chemistry,Jilin Univ
论文部分内容阅读
Biodiesel has emerged as a non-toxic,biodegradable,and re-newable fuel substitute that can be readily produced vio the esterification reaction of free fatty acids.The present work explores the potential of 12-tungstophosphoric acid(TPA) anchored two-dimensional(2D) ITQ-2 zeolite(TPA/ITQ-2) as heterogeneous acid catalysts for biodiesel production.TPA/ITQ-2 material was pre-pared by swelling,delamination,and subsequent wetness incipient impregnation approach.The prepared catalysts were comprehen-sively characterized by powder X-ray diffraction,N2 adsorption/de-sorption,temperature-programmed desorption of ammonia,flou-rier transform infrared spectroscopy,and transmission electron mi-croscopy.The catalytic activity of TPA/ITQ-2 for biodiesel production was evaluated by the esterification reaction of oleate acid with methanol.Process parameters,such as reactant molar ratio and TPA loading were optimized.Due to the superior mass transfer and ade-quate stable acid sites,2D TPA/ITQ-2 showed a higher catalytic ac-tivity and a better recyclable stability than the 3D and layered TPA/zeolites.This work will provide new opportunities for the design of 2D zeolite-based acid catalysts for biodiesel production.
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