**Author details**

 Fuchong Li1 , Yansheng Liu2 , Linlei Wang1 , Xu Li1 , Tianqiong Ma2 and Guangbi Gong1 \*

\*Address all correspondence to: gongguangbi@petrochina.com.cn-

1 Lanzhou Petrochemical Research Center, Lanzhou, PR China

2 Gansu Provincial Engineering Laboratory for Chemical Catalysis, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, PR China
