期刊
ACS OMEGA
卷 5, 期 22, 页码 12760-12767出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c00375
关键词
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资金
- Guizhou Science and Technology Foundation [[2020]1Y054]
- Academician Workstation of Guizhou Science and Technology Plan (Guizhou S&T Cooperation Platform Talents) [[2016]5602]
- Science and Technology Cooperation Project of Guizhou Province [LH [2017]7059]
- Key Support Discipline in Agricultural Resources and Environment of Anshun University
- Technical Talent Support Program of Guizhou Education Department [KY [2018]069]
- Creative Research Groups Support Program of Guizhou Education Department [KY [2017]049]
A novel solid acid nanocatalyst (Ag-1(NH4)(2)PW12O40/UiO-66) comprising ammonium and silver co-doped H3PW12O40 and zirconium-based metal-organic frameworks (UiO-66) was synthesized and characterized by Fourier transform infrared spectroscopy, N-2 adsorption/desorption, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, thermogravimetric analysis, and ammonia temperature-programmed desorption. The catalytic activity was evaluated for the synthesis of biodiesel via esterification of lauric acid and methanol. The effect of the operating parameters including the molar ratio of lauric acid to methanol, catalyst amount, and reaction temperature and time on the lauric acid conversion was also investigated to obtain optimum reaction conditions. Also, the composite (Ag-1(NH4)(2)PW12O40/UiO-66) was recyclable and reused up to six cycles. Kinetics of the lauric acid esterification has been assumed to be of a pseudo-first order, and the results showed that the activation energy for the esterification process was found to be 35.2 kJ/mol.
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