1. School of Chemical Engineering Northwest University Xi'an China
2. Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering Shaanxi University of Science and Technology Xi'an China
3. International Scientific and Technological Cooperation Base for Clean Utilization of Hydrocarbon Resources, Chemical Engineering Research Center of the Ministry of Education for Advance Use Technology of Shanbei Energy, Shaanxi Research Center of Engineering Technology for Clean Coal Conversion, Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi Xi'an China