tailieunhanh - Preparation, characterization and application of heterogeneous solid base catalyst for biodiesel production from soybean oil

Preparation, characterization and application of heterogeneous solid base catalyst for biodiesel production from soybean oil has many contents: Preparation of catalyst, haracterization of the catalys, ransesterification of soybean oil and chemicalanalyses, creening of catalyst, atalyst characterizations, fluence of the transesterification reactionconditions,. | Bio MAS s AND BIOENERGy 35 2011 2787-2795 Available at ScienceDirect http m locate biombioe Preparation characterization and application of heterogeneous solid base catalyst for biodiesel production from soybean oil Yihuai Lia Fengxian Qiu a Dongya Yang a Xiaohua Lib Ping Sun b a Schoo of Chemistry and Chemical Engineering Jiangsu University Xuefu Road 301 212013 Zhenjiang PR China bJiangsu Provincial Key Laboratory of Power Machinery and Application of Clean Energy 212013 Zhenjiang PR China ARTICLE INFO ABSTRACT Article history Received 24 September 2010 Received in revised form 22 February 2011 Accepted 4 March 2011 Available online 24 March 2011 Keywords Heterogeneous catalyst Transesterification Biodiesel Potassium hydroxide Neodymium oxide A solid base catalyst was prepared by neodymium oxide loaded with potassium hydroxide and investigated for transesterification of soybean oil with methanol to biodiesel. After loading KOH of 30 wt. on neodymium oxide followed by calcination at 600 C the catalyst gave the highest basicity and the best catalytic activity for this reaction. The obtained catalyst was characterized by means of X-ray diffraction XRD Fourier transform infrared spectroscopy FTIR Scanning electron microscopy SEM Thermogravimetric analysis TGA N2 adsorption-desorption measurements and the Hammett indicator method. The catalyst has longer lifetime and maintained sustained activity after being used for five times and were noncorrosive and environmentally benign. The separate effects of the molar ratio of methanol to oil reaction temperature mass ratio of catalyst to oil and reaction time were investigated. The experimental results showed that a 14 1 M ratio of methanol to oil addition of catalyst 60 C reaction temperature and h reaction time gave the best results and the biodiesel yield of was achieved. The properties of obtained biodiesel are close to commercial diesel fuel and is rated as a realistic