1. State
Key Laboratory of Applied Organic Chemistry, Key Laboratory of Nonferrous
Metal Chemistry and Resources Utilization of Gansu Province and Department
of Chemistry, Lanzhou University, Lanzhou 730000, People’s Republic of China
2. Research Institute
of Lanzhou Petrochemical Corporation, Petrochina Lanzhou Petrochemical Company, Lanzhou 730060, People’s Republic of China
3. College
of Chemical Engineering, Northwest University for Minorities, Lanzhou 730030, People’s Republic of China