1. State
Key Laboratory of Rare Earth Resource Utilization, Changchun Institute
of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
2. School
of Mechanical and Chemical Engineering, The University of Western Australia, Perth, Western Australia 6009, Australia
3. State
Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Kunming University of Science and Technology, Kunming 650093, China