Sulfonic Acids Supported on UiO-66 as Heterogeneous Catalysts for the Esterification of Fatty Acids for Biodiesel Production
Zr-MOF (UiO-66) catalysts PTSA/UiO-66 and MSA/UiO-66 bearing supported sulfonic acids (<i>p</i>-toluenesulfonic acid and methanesulfonic acid, respectively) were prepared through a simple impregnation approach. The UiO-66-supported sulfonic acid catalysts were characterized by X-ray diff...
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doaj-06d5b6d6d94c44f9a973137622430d122020-11-25T03:41:02ZengMDPI AGCatalysts2073-43442020-11-01101271127110.3390/catal10111271Sulfonic Acids Supported on UiO-66 as Heterogeneous Catalysts for the Esterification of Fatty Acids for Biodiesel ProductionWei Liu0Fang Wang1Pengcheng Meng2Shuang-Quan Zang3College of Chemistry and Molecular Engineering, Zhengzhou University, Science Avenue 100, Zhengzhou 450001, ChinaCollege of Food Science and Technology, Henan University of Technology, Lianhua Street 100, Zhengzhou 450001, ChinaCollege of Food Science and Technology, Henan University of Technology, Lianhua Street 100, Zhengzhou 450001, ChinaCollege of Chemistry and Molecular Engineering, Zhengzhou University, Science Avenue 100, Zhengzhou 450001, ChinaZr-MOF (UiO-66) catalysts PTSA/UiO-66 and MSA/UiO-66 bearing supported sulfonic acids (<i>p</i>-toluenesulfonic acid and methanesulfonic acid, respectively) were prepared through a simple impregnation approach. The UiO-66-supported sulfonic acid catalysts were characterized by X-ray diffraction (XRD), N<sub>2</sub> adsorption-desorption, fourier transform infrared spectroscopy (FT-IR) and elemental analysis. The prepared heterogeneous acid catalysts had excellent stability since their crystalline structure was not changed compared with that of the original UiO-66. Zr-MOF MSA/UiO-66 and PTSA/UiO-66 were next successfully used as heterogeneous acid catalysts for the esterification of biomass-derived fatty acids (e.g., palmitic acid, oleic acid) with various alcohols (e.g., methanol, <i>n</i>-butanol). The results demonstrated that both of them had high activity and excellent reusability (more than nine successive cycles) in esterification reactions. Alcohols with higher polarity (e.g., methanol) affected the solid catalyst reusability slightly, while alcohols with moderate or lower polarity (e.g., <i>n</i>-butanol, <i>n</i>-decanol) had no influence. Thus, these developed sulfonic acids-supported metal-organic frameworks (UiO-66) have the potential for use in biodiesel production with excellent reusability.https://www.mdpi.com/2073-4344/10/11/1271metal-organic frameworksUiO-66heterogeneous acid catalystsulfonic acidsesterificationbiodiesel |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Wei Liu Fang Wang Pengcheng Meng Shuang-Quan Zang |
spellingShingle |
Wei Liu Fang Wang Pengcheng Meng Shuang-Quan Zang Sulfonic Acids Supported on UiO-66 as Heterogeneous Catalysts for the Esterification of Fatty Acids for Biodiesel Production Catalysts metal-organic frameworks UiO-66 heterogeneous acid catalyst sulfonic acids esterification biodiesel |
author_facet |
Wei Liu Fang Wang Pengcheng Meng Shuang-Quan Zang |
author_sort |
Wei Liu |
title |
Sulfonic Acids Supported on UiO-66 as Heterogeneous Catalysts for the Esterification of Fatty Acids for Biodiesel Production |
title_short |
Sulfonic Acids Supported on UiO-66 as Heterogeneous Catalysts for the Esterification of Fatty Acids for Biodiesel Production |
title_full |
Sulfonic Acids Supported on UiO-66 as Heterogeneous Catalysts for the Esterification of Fatty Acids for Biodiesel Production |
title_fullStr |
Sulfonic Acids Supported on UiO-66 as Heterogeneous Catalysts for the Esterification of Fatty Acids for Biodiesel Production |
title_full_unstemmed |
Sulfonic Acids Supported on UiO-66 as Heterogeneous Catalysts for the Esterification of Fatty Acids for Biodiesel Production |
title_sort |
sulfonic acids supported on uio-66 as heterogeneous catalysts for the esterification of fatty acids for biodiesel production |
publisher |
MDPI AG |
series |
Catalysts |
issn |
2073-4344 |
publishDate |
2020-11-01 |
description |
Zr-MOF (UiO-66) catalysts PTSA/UiO-66 and MSA/UiO-66 bearing supported sulfonic acids (<i>p</i>-toluenesulfonic acid and methanesulfonic acid, respectively) were prepared through a simple impregnation approach. The UiO-66-supported sulfonic acid catalysts were characterized by X-ray diffraction (XRD), N<sub>2</sub> adsorption-desorption, fourier transform infrared spectroscopy (FT-IR) and elemental analysis. The prepared heterogeneous acid catalysts had excellent stability since their crystalline structure was not changed compared with that of the original UiO-66. Zr-MOF MSA/UiO-66 and PTSA/UiO-66 were next successfully used as heterogeneous acid catalysts for the esterification of biomass-derived fatty acids (e.g., palmitic acid, oleic acid) with various alcohols (e.g., methanol, <i>n</i>-butanol). The results demonstrated that both of them had high activity and excellent reusability (more than nine successive cycles) in esterification reactions. Alcohols with higher polarity (e.g., methanol) affected the solid catalyst reusability slightly, while alcohols with moderate or lower polarity (e.g., <i>n</i>-butanol, <i>n</i>-decanol) had no influence. Thus, these developed sulfonic acids-supported metal-organic frameworks (UiO-66) have the potential for use in biodiesel production with excellent reusability. |
topic |
metal-organic frameworks UiO-66 heterogeneous acid catalyst sulfonic acids esterification biodiesel |
url |
https://www.mdpi.com/2073-4344/10/11/1271 |
work_keys_str_mv |
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