Jiangsu Provincial Key Laboratory of Power Machinery and Application of Clean Energy

Zhenjiang, China

Jiangsu Provincial Key Laboratory of Power Machinery and Application of Clean Energy

Zhenjiang, China

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Qiu F.,Jiangsu University | Li Y.,Jiangsu University | Yang D.,Jiangsu University | Li X.,Jiangsu Provincial Key Laboratory of Power Machinery and Application of Clean Energy | Sun P.,Jiangsu Provincial Key Laboratory of Power Machinery and Application of Clean Energy
Applied Energy | Year: 2011

The biodiesel (fatty acid methyl esters, FAME) was prepared by transesterification of the mixed oil (soybean oil and rapeseed oil) with sodium hydroxide (NaOH) as catalyst. The effects of mole ratio of methanol to oil, reaction temperature, catalyst amount and reaction time on the yield were studied. In order to decrease the operational temperature, a co-solvent (hexane) was added into the reactants and the conversion efficiency of the reaction was improved. The optimal reaction conditions were obtained by this experiment: methanol/oil mole ratio 5.0:1, reaction temperature 55 °C, catalyst amount 0.8. wt.% and reaction time 2.0. h. Under the optimum conditions, a 94% yield of methyl esters was reached ∼94%. The structure of the biodiesel was characterized by FT-IR spectroscopy. The sulfur content of biodiesel was determined by Inductively Coupled Plasma emission spectrometer (ICP), and the satisfied result was obtained. The properties of obtained biodiesel from mixed oil are close to commercial diesel fuel and is rated as a realistic fuel as an alternative to diesel. Production of biodiesel has positive impact on the utilization of agricultural and forestry products. © 2010 Elsevier Ltd.


Qiu F.,Jiangsu University | Li Y.,Jiangsu University | Yang D.,Jiangsu University | Li X.,Jiangsu Provincial Key Laboratory of Power Machinery and Application of Clean Energy | Sun P.,Jiangsu Provincial Key Laboratory of Power Machinery and Application of Clean Energy
Bioresource Technology | Year: 2011

A solid base nanocatalyst was prepared by ZrO 2 loaded with C 4H 4O 6HK and investigated for transesterification of soybean oil with methanol to biodiesel. The obtained nanocatalyst was characterized by means of XRD, FTIR, TEM, TGA, N 2 adsorption-desorption measurements and the Hammett indicator method. TEM photograph showed that the nanocatalyst had granular and porous structures with particle sizes of 10-40nm. The nanocatalyst had longer lifetime and maintained sustained activity after being used for five cycles. The separate effects of the molar ratio of methanol to oil, reaction temperature, nanocatalyst amount and reaction time were investigated. The experimental results showed that a 16:1M ratio of methanol to oil, 6.0% catalyst, 60°C reaction temperature and 2.0h reaction time gave the best results and the biodiesel yield of 98.03% was achieved. Production of biodiesel has positive impact on the utilization of agricultural and forestry products. © 2010 Elsevier Ltd.


Li Y.,Jiangsu University | Qiu F.,Jiangsu University | Yang D.,Jiangsu University | Sun P.,Jiangsu Provincial Key Laboratory of Power Machinery and Application of Clean Energy | Li X.,Jiangsu Provincial Key Laboratory of Power Machinery and Application of Clean Energy
Food and Bioproducts Processing | Year: 2012

Biodiesel produced by the transesterification reaction of soybean oil using potassium hydroxide (KOH) catalytic is a promising alternative fuel to diesel regarding the limited resources of fossil fuel and the environmental concerns. In order to decrease the operational temperature and increase the conversion efficiency of methanol, a novel idea was presented in which a co-solvent dichloromethane was added to the reactants. The results showed that the yield of methyl ester was improved when dichloromethane was coexistence. The effects of the co-solvent, molar ratio of methanol/oil, reaction temperature, and catalyst on the biodiesel conversion were investigated. With the optimal reaction temperature of 45 °C, methanol to oil ratio of 4.5:1, co-solvent dichloromethane of 4.0%, a 96% yield of methyl esters was observed in 2.0 h at the condition with 1.0 wt.% potassium hydroxide. The characterization and analysis of biodiesel were obtained by FT-IR, gas chromatograph and inductively coupled plasma atomic emission (ICP-OES) spectroscopy methods. The cetane number, flash point, cold filter plugging point, acid number, water content, ash content and total glycerol content were investigated. © 2011 The Institution of Chemical Engineers.

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