[1] S Cent Univ Nationalities, Key Lab Catalysis & Mat Sci, State Ethn Affairs Commiss, Wuhan 430074, Peoples R China
[2] S Cent Univ Nationalities, Minist Educ, Wuhan 430074, Peoples R China
[3] E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 20023, Peoples R China
[4] Colorado Sch Mines, Dept Chem & Geochem, Golden, CO 80401 USA