1. Key Laboratory of Low Carbon Energy and Chemical EngineeringCollege of Chemical and Environmental EngineeringShandong University of Science and Technology Qingdao 266590 Shandong China
2. College of Chemical EngineeringGuangdong University of Petrochemical Technology, Maoming 525000, Guangdong China
3. Department of Production TechnologyQingyang Petrochemical CompanyChina National Petroleum Corporation Qingyang 745115 Gansu China