1. Research center of the Ministry of Education for High Gravity Engineering and Technology, Beijing University of Chemical Technology, 15 Beisanhuan East Road Beijing 100029, PR China, Department of Applied Chemistry, School of Engineering, Toyama University, Gofuku 3190, Toyama 930-8555, Japan, JST, CREST, Sanbancho 5, Chiyoda-ku, Tokyo 102-0075, Japan, and State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Science, Taiyuan, 030001, PR China