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Appl. Sci. 2019, 9(8), 1518; https://doi.org/10.3390/app9081518

Optimization of Salix Carbonation Solid Acid Catalysts for One-Step Synthesis by Response Surface Method

1
College of Science, Inner Mongolia Agricultural University, Huhhot 010018, China
2
School of Chemistry and Chemical Engineering, Inner Mongolia University, Huhhot 010018, China
*
Author to whom correspondence should be addressed.
Received: 16 March 2019 / Revised: 8 April 2019 / Accepted: 8 April 2019 / Published: 12 April 2019
(This article belongs to the Special Issue New Carbon Materials from Biomass and Their Applications)
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Abstract

Salix carboniferous solid acid catalysts were successfully obtained via one-step carbonization and sulfonation of Salix psammophila in the presence of concentrated sulfuric acid, which was then used in the esterification reaction between oleic acid and methanol to prepare the biodiesel. The esterification rate of the catalyst obtained from the reaction indicated the catalytic performance of the catalyst. Afterwards, the recycling performance of the catalyst was optimized and characterized based on Fourier transform infrared spectrometer. The catalyst performance was examined and optimized through the response surface method, and the catalyst was determined and characterized based on scanning electron microscope (SEM), elemental analysis, thermogravimetric analysis, and infrared analysis. The results suggested that the optimal preparation conditions were as follows: reaction temperature of 125 °C, reaction time of 102 min, solid–liquid ratio of 17 g/100 mL, standing time of 30 min, and the highest conversion level of 94.15%. View Full-Text
Keywords: one-step method; carbonized sulfonation; response surface method; Salix carboniferous solid acid catalysts; biodiesel one-step method; carbonized sulfonation; response surface method; Salix carboniferous solid acid catalysts; biodiesel
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Lu, P.; Wang, K.; Gong, J. Optimization of Salix Carbonation Solid Acid Catalysts for One-Step Synthesis by Response Surface Method. Appl. Sci. 2019, 9, 1518.

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