Study on simplifying the synthesis method of CaO/ZrO2 catalyst and optimizing its performance in catalytic transesterification to prepare biodiesel

文献类型： 外文期刊

第一作者： Liu, Yunfei

作者： Liu, Yunfei;Yu, Hewei;Chen, Xiuxiu;Si, Hongyu;Sun, Zekai;Peng, Lizeng

作者机构：

关键词： Biodiesel; CaO/ZrO 2; Synthesis method; Transesterification

期刊名称：BIOMASS & BIOENERGY （ 影响因子：5.8； 五年影响因子：5.7 ）

ISSN： 0961-9534

年卷期： 2025 年 200 卷

页码：

收录情况： SCI

摘要： This study focused on the optimized preparation of biodiesel over a ZrO2-modified CaO catalyst. CaO/ZrO2 catalysts were synthesized by impregnation, co-precipitation, and sol-gel methods, and analyzed by various characterization methods, including N2 adsorption-desorption, X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), thermally programmed desorption of CO2 (CO2-TPD), and scanning electron microscopy (SEM). The CaO/ZrO2 catalyst synthesized by the impregnation method had a uniform microstructure, good crystallinity, a uniform spherical particle structure with large pores and slits, and a density of surface alkali sites of 1.898 mmol g-1. Using the impregnation method, the best synthesis conditions were determined as a calcination temperature of 700 degrees C and a Ca/Zr molar ratio of 3:2. Furthermore, the optimal reaction conditions were determined by single-factor experiments as a catalyst dosage of 8 wt%, a molar ratio of methanol to oil of 12, a reaction temperature of 64 degrees C, and a reaction time of 2 h. Under these reaction conditions, the yield of fatty acid methyl esters (FAME) reached 95.9 %, decreasing only marginally to 77.6 % after four reuses of the catalyst. It is hoped that this study may provide important research guidance for developing solid basic catalysts for preparing FAME by transesterification under mild conditions.

分类号：

  • 相关文献
作者其他论文 更多>>

微信小程序