Biodiesel Production by Esterification Reaction on K<sup>+</sup> Modified MgAl-Hydrotalcites Catalysts
K<sup>+</sup> modified hydrotalcites and its activity as a solid base catalyst for ultrasonic wave- assisted biodiesel conversion was investigated. The solid alkaline catalysts of the MgAl-hydrotalcites (HT) was prepared by co-precipitation and modified with K<sup>+</sup> by...
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doaj-9ba317a0b85e4abda5300dc534e7adb92020-11-24T20:45:00ZengMDPI AGCatalysts2073-43442019-09-019974210.3390/catal9090742catal9090742Biodiesel Production by Esterification Reaction on K<sup>+</sup> Modified MgAl-Hydrotalcites CatalystsChen-Yang Zhang0Wen-Li Shao1Wei-Xia Zhou2Yang Liu3Yuan-Yuan Han4Yi Zheng5Yong-Jun Liu6College of Chemical Engineering, Huaqiao University, Xiamen 361021, ChinaCollege of Chemical Engineering, Huaqiao University, Xiamen 361021, ChinaCollege of Chemical Engineering, Huaqiao University, Xiamen 361021, ChinaCollege of Chemical Engineering, Huaqiao University, Xiamen 361021, ChinaCollege of Chemical Engineering, Huaqiao University, Xiamen 361021, ChinaCollege of Chemical Engineering, Huaqiao University, Xiamen 361021, ChinaCollege of Chemical Engineering, Huaqiao University, Xiamen 361021, ChinaK<sup>+</sup> modified hydrotalcites and its activity as a solid base catalyst for ultrasonic wave- assisted biodiesel conversion was investigated. The solid alkaline catalysts of the MgAl-hydrotalcites (HT) was prepared by co-precipitation and modified with K<sup>+</sup> by impregnation. The influence of K<sup>+</sup> incorporation on the performance of Mg-Al hydrotalcites catalysts was investigated by SmartLab X-ray powder diffractometer (XRD), infrared spectrum (IR), thermogravimetric-differential thermal analysis (TG−DTA), CO<sub>2</sub> temperature programmed desorption (CO<sub>2</sub>-TPD), scanning electron microscopy (SEM), and N<sub>2</sub> adsorption−desorption isotherm (BET). The research discovered that K<sup>+</sup> modified of double layered structure of MgAl-hydrotalcite resulted in a significant increase in catalytic activity in transesterification of rapeseed oil. It exhibited high catalytic activity that achieved a biodiesel yield of 99% when the reaction was conducted with 2 wt% catalysts, K<sup>+</sup>/HT load ratio of 6.25%, a methanol/rapeseed oil molar ratio of 12:1, and reaction at 60 °C over 1 h. The result showed that the K<sup>+</sup> modified HT as a transesterification catalyst had the potency for biodiesel conversion. In addition, under the above reaction conditions, the biodiesel yield was up to 99.9% in only five minutes with ultrasonic aid.https://www.mdpi.com/2073-4344/9/9/742MgAl hydrotalcitessolid alkalinebiodieselK<sup>+</sup> modifiedultrasonic aid |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chen-Yang Zhang Wen-Li Shao Wei-Xia Zhou Yang Liu Yuan-Yuan Han Yi Zheng Yong-Jun Liu |
spellingShingle |
Chen-Yang Zhang Wen-Li Shao Wei-Xia Zhou Yang Liu Yuan-Yuan Han Yi Zheng Yong-Jun Liu Biodiesel Production by Esterification Reaction on K<sup>+</sup> Modified MgAl-Hydrotalcites Catalysts Catalysts MgAl hydrotalcites solid alkaline biodiesel K<sup>+</sup> modified ultrasonic aid |
author_facet |
Chen-Yang Zhang Wen-Li Shao Wei-Xia Zhou Yang Liu Yuan-Yuan Han Yi Zheng Yong-Jun Liu |
author_sort |
Chen-Yang Zhang |
title |
Biodiesel Production by Esterification Reaction on K<sup>+</sup> Modified MgAl-Hydrotalcites Catalysts |
title_short |
Biodiesel Production by Esterification Reaction on K<sup>+</sup> Modified MgAl-Hydrotalcites Catalysts |
title_full |
Biodiesel Production by Esterification Reaction on K<sup>+</sup> Modified MgAl-Hydrotalcites Catalysts |
title_fullStr |
Biodiesel Production by Esterification Reaction on K<sup>+</sup> Modified MgAl-Hydrotalcites Catalysts |
title_full_unstemmed |
Biodiesel Production by Esterification Reaction on K<sup>+</sup> Modified MgAl-Hydrotalcites Catalysts |
title_sort |
biodiesel production by esterification reaction on k<sup>+</sup> modified mgal-hydrotalcites catalysts |
publisher |
MDPI AG |
series |
Catalysts |
issn |
2073-4344 |
publishDate |
2019-09-01 |
description |
K<sup>+</sup> modified hydrotalcites and its activity as a solid base catalyst for ultrasonic wave- assisted biodiesel conversion was investigated. The solid alkaline catalysts of the MgAl-hydrotalcites (HT) was prepared by co-precipitation and modified with K<sup>+</sup> by impregnation. The influence of K<sup>+</sup> incorporation on the performance of Mg-Al hydrotalcites catalysts was investigated by SmartLab X-ray powder diffractometer (XRD), infrared spectrum (IR), thermogravimetric-differential thermal analysis (TG−DTA), CO<sub>2</sub> temperature programmed desorption (CO<sub>2</sub>-TPD), scanning electron microscopy (SEM), and N<sub>2</sub> adsorption−desorption isotherm (BET). The research discovered that K<sup>+</sup> modified of double layered structure of MgAl-hydrotalcite resulted in a significant increase in catalytic activity in transesterification of rapeseed oil. It exhibited high catalytic activity that achieved a biodiesel yield of 99% when the reaction was conducted with 2 wt% catalysts, K<sup>+</sup>/HT load ratio of 6.25%, a methanol/rapeseed oil molar ratio of 12:1, and reaction at 60 °C over 1 h. The result showed that the K<sup>+</sup> modified HT as a transesterification catalyst had the potency for biodiesel conversion. In addition, under the above reaction conditions, the biodiesel yield was up to 99.9% in only five minutes with ultrasonic aid. |
topic |
MgAl hydrotalcites solid alkaline biodiesel K<sup>+</sup> modified ultrasonic aid |
url |
https://www.mdpi.com/2073-4344/9/9/742 |
work_keys_str_mv |
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