1. School of Petrochemical and Technology Faculty of Chemistry and Chemical‐Environmental Engineering Liaoning Shihua University 113001 Fushun Liaoning Province P.R. China
2. Institute of Unconventional Hydrocarbon and New Energy Sources China University of Petroleum (East China) 266580 Qingdao P.R. China
3. Department of Chemical Processes and Environments Faculty of Environmental Engineering University of Kitakyushu 808‐0135 Kitakyushu Japan