1. Hebei Provincial Key Laboratory of Green Chemical Technology and High Efficient Energy Saving School of Chemical Engineering and Technology Hebei University of Technology Tianjin 300130 P. R. China
2. Tianjin Key Laboratory of Chemical Process Safety Tianjin 300130 P. R. China
3. Hebei Industrial Technology Research Institute of Green Chemical Industry Huanghua 061100, Hebei P. R. China