Study on the preparation of nano-NaFeS_2 materials and application in the catalytic hydropyrolysis of coal
The nano-NaFeS2materials are prepared by evaporating the mixture of FeSO4 and Na2S aqueous solution on low temperature solution. The structure and microscopy of nano-NaFeS2materials are characterized by X-ray diffraction and transmission electron microscopy. The catalytic activity of nano-NaFeS2materials in the catalytic hydropyrolysis of coal is studied. The results show that the yield of liquid products and gaseous products is 31%,20% at the reaction temperature 500 ℃ and NaFeS2 amount of 0. 5%. Compared with the conventional pyrite catalyst,liquid products and gaseous products are increased by 1. 6 times and 1 times.