Among all the preparation technologies of biofuel, catalytic cracking is regarded as a promising method for its simple process and similar liquid product to petroleum-based fuels. The second-generation biodiesel containing C 15-18 linear paraffins with high quality and yield is achieved by hydrodeoxygenation, decarboxylation and hydroisomerization of triglycerides, whereas the high cost of hydrogen and the rigorous demand for catalyst activity restrict its industrialization. Renewable Sustainable Energy Rev.Ģ010, 14, 578. In this regard, hydrocracking and catalytic cracking have been attempted to convert lipid into biofuel. The preparation technology is quite mature, but there are still some drawbacks such as poor cold flow properties and relatively low calorific value. It is well known that biodiesel is composed of fatty acid methyl esters (FAME) produced by transesterification of triglycerides and alcohols. Renewable Sustainable Energy Rev.ĥ Xu, J. The methods for producing biofuel from lipid mainly include transesterification and cracking. As an important renewable energy source, lipid is a potential feedstock for preparing environmental friendly and carbon neutral biofuel since it possesses a similar structure to the diesel fuel. Thus, there is a considerable interest in developing renewable and environmentally friendly energy throughout the world. Severe energy security and environmental pollution have been caused due to extensive use of fossil fuels. Soybean oil catalytic cracking γ-Al 2O 3/CaO catalysts biofuel As for 35 wt.% γ-Al 2O 3/CaO, the addition of γ-Al 2O 3 was beneficial to generate alkenes (38.2 wt.%), arenes (10.6 wt.%) and alcohols (12.3 wt.%) with ketones decreasing (16.5 wt.%) via γ-hydrogen transfer reaction and disproportination. Calcium oxide would react with fatty acid to yield calcium carboxylates at 300-350 ✬, which were subsequently decomposed into hydrocarbons (57.9 wt.%) and ketones (22.6 wt.%) at 415-510 ✬. The paper focused on the variation of biofuel composition and cracking pathway caused by γ-Al 2O 3/CaO composite catalysts via gas chromatography-mass spectrometry (GC-MS) and thermogravimetric (TG) analysis. The maximum yield (70.0 wt.%) of biofuel with low acid value (6.7 mg KOH g -1) and oxygen content (5.6%), as well as high calorific value (44.2 MJ kg -1) was achieved over 35 wt.% γ-Al 2O 3/CaO at 480 ✬ and 3.72 h -1. The influence of catalysts, cracking temperature and weight hourly space velocity (WHSV) on the products distribution were investigated. In this paper, we report the catalytic cracking of soybean oil for biofuel over γ-Al 2O 3/CaO composite catalysts. ChinaZhejiang Province Key Laboratory of Biofuel, 310014 Hangzhou, Zhejiang, P. ChinaBiodiesel Laboratory of China Petroleum and Chemical Industry Federation, 310014 Hangzhou, Zhejiang, P. China Xuejun LiuĬollege of Chemical Engineering, Zhejiang University of Technology, 310014 Hangzhou, Zhejiang, P. China Yi WeiĬollege of Chemical Engineering, Zhejiang University of Technology, 310014 Hangzhou, Zhejiang, P. China Jun WangĬollege of Chemical Engineering, Zhejiang University of Technology, 310014 Hangzhou, Zhejiang, P.
China Tong LeiĬollege of Chemical Engineering, Zhejiang University of Technology, 310014 Hangzhou, Zhejiang, P.
College of Chemical Engineering, Zhejiang University of Technology, 310014 Hangzhou, Zhejiang, P.