1. State Key Laboratory of Coal CombustionSchool of Energy and Power EngineeringHuazhong University of Science and Technology Wuhan 430074 P.R. China
2. State Key Laboratory of Advanced Technology for Materials Synthesis and ProcessingWuhan University of Technology Wuhan 430070 P.R. China
3. Department of EngineeringUniversity of Perugia via G. Duranti 67 06125 Perugia Italy
4. School of Chemical and Process EngineeringUniversity of Leeds Leeds LS2 9JT UK