1. State Key Laboratory of Heavy Oil Processing, China University of Petroleum, Qingdao 266580, China
2. Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, China
3. Qingdao Yanke New Materials Co., Ltd, Qingdao 266580, China
4. Qingdao Huicheng Environmental Technology Co., Ltd, Qingdao 266500, China