Synthesis of KOH@CaO Catalyst by Sol-gel Method for Highly Efficient Biodiesel Production from Olive Oil

IF 1.4 Q3 CHEMISTRY, MULTIDISCIPLINARY Physical Chemistry Research Pub Date : 2021-03-01 DOI:10.22036/PCR.2020.243603.1807
Eshaq Bazhdan, Sajad Tamjidi, P. Rouhi, H. Esmaeili
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引用次数: 3

Abstract

In this research, biodiesel was produced from olive oil in the presence of KOH-impregnated CaO catalyst (CaO@KOH). To this end, CaO catalyst was produced using the sol-gel method. The percent composition of fatty acids (FAs) in olive oil was measured using gas chromatography (GC) analysis. Also, SEM and BET analyses were performed to evaluate the surface properties of the catalyst. The results indicated that the biodiesel conversion yield of 99±0.2% was obtained under the optimal conditions, i.e. an oil/methanol ratio of 1:15, a catalyst dosage of 1.5 wt.%, a reaction temperature of 65℃, and a reaction time of 4 h, which was the highest biodiesel yield ever achieved from olive oil. The reusability of the catalyst was further investigated through 8 successive cycles of biodiesel generation, and the results indicated that the reduction of biodiesel conversion yield was less than 2% after 4 cycles of reusing the catalyst, confirming the high potential of the aforementioned catalyst. Also, the production cost of the KOH/CaO catalyst was calculated to be 108.45 USD/Kg, which had a reasonable cost. Moreover, the physical properties of the produced biodiesel were within the standard range.
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合成KOH@CaO溶胶-凝胶法催化高效生产橄榄油生物柴油
在本研究中,以橄榄油为原料,在KOH浸渍的CaO催化剂存在下生产生物柴油(CaO@KOH)。为此,使用溶胶-凝胶法生产了CaO催化剂。使用气相色谱(GC)分析测量橄榄油中脂肪酸(FA)的组成百分比。此外,进行SEM和BET分析以评价催化剂的表面性质。结果表明,在油/甲醇比为1:15、催化剂用量为1.5wt%、反应温度为65℃、反应时间为4h的最佳条件下,生物柴油的转化率为99±0.2%,是橄榄油生物柴油转化率最高的条件。通过连续8个循环的生物柴油生产,进一步研究了催化剂的可重复使用性,结果表明,经过4个循环的重复使用,生物柴油转化率的降低不到2%,证实了上述催化剂的高潜力。此外,KOH/CaO催化剂的生产成本计算为108.45美元/Kg,这具有合理的成本。此外,生产的生物柴油的物理性能在标准范围内。
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来源期刊
Physical Chemistry Research
Physical Chemistry Research CHEMISTRY, MULTIDISCIPLINARY-
CiteScore
2.70
自引率
8.30%
发文量
18
期刊介绍: The motivation for this new journal is the tremendous increasing of useful articles in the field of Physical Chemistry and the related subjects in recent years, and the need of communication between Physical Chemists, Physicists and Biophysicists. We attempt to establish this fruitful communication and quick publication. High quality original papers in English dealing with experimental, theoretical and applied research related to physics and chemistry are welcomed. This journal accepts your report for publication as a regular article, review, and Letter. Review articles discussing specific areas of physical chemistry of current chemical or physical importance are also published. Subjects of Interest: Thermodynamics, Statistical Mechanics, Statistical Thermodynamics, Molecular Spectroscopy, Quantum Chemistry, Computational Chemistry, Physical Chemistry of Life Sciences, Surface Chemistry, Catalysis, Physical Chemistry of Electrochemistry, Kinetics, Nanochemistry and Nanophysics, Liquid Crystals, Ionic Liquid, Photochemistry, Experimental article of Physical chemistry. Mathematical Chemistry.
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