Sci. Adv. Today 2 (2016) 25237  
  Research Article  
   
   
         
Effect of specific surface area of La2O3 catalysts for oxidative coupling of methane  
  Jianjun Songa,b, Tao Jianga,b, Jun Zhanga, Yuhan Suna, and Yan Zhua,c  
     
a CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201210, China
b University of Chinese Academy of Sciences, Beijing 100049, China
c School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, China

   
  Abstract  
  The specific surface area of catalysts plays an important role in catalytic reaction, which could affect the internal diffusion process. La2O3 catalysts with different specific surface areas were applied into the oxidative coupling of methane reaction (OCM). The morphology effect of La2O3 catalysts can be minimized by calcination pretreatment, which could give prominence to the role of specific surface area of catalysts. The results indicated that higher specific surface area of La2O3 catalysts could lower the OCM ignition temperature. The characterizations of La2O3 catalysts show that the specific surface area of La2O3 catalysts decreased seriously after OCM reaction. In the five circular catalytic reactions, the ignition temperature of La2O3 nanorods and nanoparticles catalysts decreased from both 475 °C of first circular reaction to 500 °C and 525 °C of the fifth circular reaction, indicating more stability of La2O3 nanorods catalyst.  
     
   
  Cite this article as:  
  Jianjun Song, Tao Jiang, Jun Zhang, Yuhan Sun, and Yan Zhu, Effect of specific surface area of La2O3 catalysts for oxidative coupling of methane, Sci. Adv. Today 2 (2016) 25237.