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The application discloses a hydrothermal carbon / ZSM-5 molecular sieve composite and a synthesis method and application thereof. The hydrothermal carbon / ZSM-5 molecular sieve composite comprises hydrothermal carbon and ZSM-5 molecular sieve, wherein the hydrothermal carbon is obtained by in-situ conversion of a small-molecule carbon source under hydrothermal conditions, is SP2O with 2theta=26.6°, and has a mass content of 0.5% to 5% in the composite. 2 The hydrothermal carbon / ZSM-5 molecular sieve composite has high activity and low deactivation rate when used as a catalyst in an isopropyl benzene cracking reaction.

The present application relates to a kind of porous carbon material containing alkali metal element and its preparation method.The preparation method includes: (1) carbon material powder and transition metal salt solution are mixed, stirring, dry and placed in inert atmosphere high-temperature treatment, and the carbon material loaded with transition metal particles is prepared;(2) the carbon material loaded with transition metal particles obtained is mixed with alkali metal-containing basic substance, stirring, drying, with inert gas as carrier gas, and after being calcined by reaction gas, in-situ generation of alkali metal element on the surface or interlayer of the carbon material loaded with transition metal particles;(3) the carbon material obtained in step (2) is washed by water, and treated by oxidizing agent to obtain the porous carbon material containing alkali metal element.

The application belongs to the technical field of desulfurizer, and discloses a natural gas desulfurizer, a preparation method and application thereof, the natural gas desulfurizer comprises 2-(2-morpholine-4-ethoxy)-ethanol and N-methyl diethanolamine with a molar ratio of (1-3):(2-4). The removal rate of H2S reaches more than 98%, and the removal rate of organic sulfur reaches 70%-75%. The application expands the application range of N-methyl diethanolamine as a main agent, and can be used for refining and removing hydrogen sulfide and organic sulfur in the acidic gas in the natural gas, coal chemical industry and petroleum chemical industry process. The preparation process of the composite desulfurizer is simple, the cost is low, the environmental pollution is small, and the application effect is outstanding.