Yunpu Wang;Shu Mei Zhang;Qiu Hao Wu;Deng Le Duan;Yu Huan Liu;Roger Ruan;Guiming Fu;Leilei Dai;Lin Jiang;Zhenting Yu;Zihong Zeng;Xiaojie Tian;Xiuhua Yan

;1 State Key Laboratory of Food Science and Technology,Nanchang University,Nanchang 330047,China);[Nanchang University];NULL;#R##N#2. Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang 330047, China;1. State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang 330047, China

soapstock;bio-oil;catalytic;temperature;vegetable oil;microwave-assisted pyrolysi

In this study, the effects of catalytic temperature and the type of soapstock on products from microwave-assisted pyrolysis were investigated. HZSM-5 was used as the catalyst to study the pyrolysis of six different soapstocks at 200 degrees C, 300 degrees C, and 400 degrees C catalytic temperature. Results showed that the bio-oil yields initially increased and then decreased with the increase in catalytic temperature. When the catalytic temperature was 300 degrees C, the bio-oil reached up to the maximum value (65.8 wt.%). Findings indicated that the composition of bio-oil was related to the degree of unsaturation of fatty acids sodium in the soapstocks. In the case of saturated fatty acid sodium, a series of alkanes was formed, whereas the pyrolysis of monounsaturated fatty acid sodium resulted mainly in cycloalkanes, the cycloalkenes obtained from bio-oil was produced by polyunsaturated fatty acid sodium.