1. School of Bioengineering, Shandong Polytechnic, Jinan 250104, China
2. Energy Research Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250014, China
3. Qingdao Product Quality Testing Research Institute, Qingdao 266100, China
4. National Energy Research Center for Clean Fuels, Synfuels China Co., Ltd., Beijing 101400, China