Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

Synthesis of magnetic carbonaceous acid derived from waste garlic peel for biodiesel production via esterification

Synthesis of magnetic carbonaceous acid derived from waste garlic peel for biodiesel production... Waste biomass-supported magnetic solid acids have particular advantages in catalyst separation. First, a novel magnetic carbonaceous catalyst was synthesized from waste garlic peel (GP) via in situ impregnation before conducting carbonization at 450–600°C and sulfonation at 105°C. The physical and chemical properties of the synthesized catalysts were characterized. It was found that the magnetism of the catalyst increased with the carbonization temperature. The optimized catalyst, carbonized at 600°C (C600-S), possessed an excellent magnetization value of 12.5 emu/g, with a specific surface area of 175.1 m2/g, a pore volume of 0.16 cm3/g, and an acidic property of 0.74 mmol/g -SO3H density. By optimizing the esterification conditions to produce biodiesel, an oleic acid conversion of 94.5% was achieved at w(catalyst dosage) = 10% (w is mass fraction), a molar ratio of n(methanol): n(oleic acid) = 10: 1 (n is the amount of substance), and a reaction for 4 h at 90°C. Further, for catalyst regeneration, it was found that sulfuric acid treatment was more effective for improving the esterification activity than solvent washing, with which a conversion of more than 76% was achieved after the third run. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Frontiers in Energy Springer Journals

Synthesis of magnetic carbonaceous acid derived from waste garlic peel for biodiesel production via esterification

Loading next page...
 
/lp/springer-journals/synthesis-of-magnetic-carbonaceous-acid-derived-from-waste-garlic-peel-PRfiEnBgw0
Publisher
Springer Journals
Copyright
Copyright © Higher Education Press 2022
ISSN
2095-1701
eISSN
2095-1698
DOI
10.1007/s11708-022-0836-6
Publisher site
See Article on Publisher Site

Abstract

Waste biomass-supported magnetic solid acids have particular advantages in catalyst separation. First, a novel magnetic carbonaceous catalyst was synthesized from waste garlic peel (GP) via in situ impregnation before conducting carbonization at 450–600°C and sulfonation at 105°C. The physical and chemical properties of the synthesized catalysts were characterized. It was found that the magnetism of the catalyst increased with the carbonization temperature. The optimized catalyst, carbonized at 600°C (C600-S), possessed an excellent magnetization value of 12.5 emu/g, with a specific surface area of 175.1 m2/g, a pore volume of 0.16 cm3/g, and an acidic property of 0.74 mmol/g -SO3H density. By optimizing the esterification conditions to produce biodiesel, an oleic acid conversion of 94.5% was achieved at w(catalyst dosage) = 10% (w is mass fraction), a molar ratio of n(methanol): n(oleic acid) = 10: 1 (n is the amount of substance), and a reaction for 4 h at 90°C. Further, for catalyst regeneration, it was found that sulfuric acid treatment was more effective for improving the esterification activity than solvent washing, with which a conversion of more than 76% was achieved after the third run.

Journal

Frontiers in EnergySpringer Journals

Published: Sep 20, 2022

Keywords: garlic peel (GP); magnetic carbonaceous acid; esterification; biodiesel

References