Na-ZSM-5 was prepared by in-situ hydrothermal process. H-ZSM-5 (n(Si)/n(Al)=40) molecular sieves were prepared by ion exchange. p-Aminophenol was prepared by Bamberger rearrangement catalyzed by the molecular sieves using phenyl-hydroxylamine as raw material. XRD, FT-IR, N₂ adsorption-desorption, SEM and Py-FTIR techniques were used to study the topological structure, micropore pore size and acidity of Na-ZSM-5 and H-ZSM-5 molecular sieves. The results showed that the prepared molecular sieves had MFI microporous structures with well crystallinity. Py-FTIR technique showed that Na-ZSM-5 had almost no B acid. H-ZSM-5(40) molecular sieve had weaker B acid and L acid. Catalysis performance showed that phenyl-hydroxylamine conversion was low in the presence of ZSM-5 with weaker acidity as catalyst. However, because of its moderate pore size, p-aminophenol selectivity and yield reached as high as 72.48% and 58.75%, respectively. The optimal conditions of p-aminophenol preparation from phenyl-hydroxylamine Bamberger rearrangement were as follows: mass ratio 1∶3 of phenyl-hydroxylamine to H-ZSM-5(40) molecular sieve, optimal reaction temperature of 353 K, optimal reaction time of 2 h, and water as solvent. Phenyl-hydroxylamine conversion and p-aminophenol selectivity were as high as 86.35% and 78.33%, respectively.

In this article, low temperature pyrolysis upgrading experiment was conducted with the low rank coal from Shanyin, Shanxi. The influence of temperature and holding time on the product yield and properties was investigated by tube furnace. The results showed that the optimized pyrolysis temperature of the experiment was 500~550 ℃，and holding time was 60 minutes. The semi-coke yield of the low rank coal was high, the sulfur content decreased significantly, and the desulfurization rate was up to 55%. The volatile matter, high ash content and higher heating value can meet the requirements of clean coal quality index in Beijing-Tianjin-Hebei region, and it can be used as clean fuel for heating, heating and so on. The tar yield was high, the density of tar was low, and the light oil component content was high. So, high quality fuel oil can be obtained through hydrogenation. The gas yield was high, and H ₂ can be gotten using the produced gas as raw material by pressure swing adsorption technology.