Release Time:2024-10-17  Hits:

Date of Publication: 2022-10-06

Journal: 催化学报

Volume: 30

Issue: 12

Page Number: 1203-1208

ISSN: 0253-9837

Abstract: A carbon-based solid acid catalyst was prepared by a carbonization-sulphonation method from natural biomass wooden powder.The esterification of oleic acid and methanol Was taken as the model reaction to investigate the impact of preparation parameters on the catalyst activity.X-ray diffraction,Fourier transform infrared spectroscopy,Thermogravimetric analysis,high-resolution transmission electron microscopy,and elemental analysis were used to characterize the catalyst.The results showed that the carbon-based solid acid catalyst prepared under the optimal conditions of carbonization at 400℃ for 0.5 h and then sulphonation at 135℃ for 1 h exhibited higher catalytic activity.The conversion of oleic acid reached 96% after reaction for 2 h in an equipment of continuous esterification、With a rectifying colunln for removing water from the system.The biomass carbon-based solid acid catalyst had turbostratic carbon structure.and the sulfuric acid group(-SO_3H)content reached 13.25%.The catalyst showed considerable heat stability below 220℃.

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