Pore path-rich ammonia-storage active mixture sample block and preparation method thereof

Abstract

The invention relates to a pore path-rich ammonia-storage active mixture sample block. The pore path-rich ammonia-storage active mixture sample block is prepared from anhydrous strontium chloride, amorphous carbon and a molecular sieve. A preparation method of the pore path-rich ammonia-storage active mixture sample block is characterized by comprising the following specific steps of: mixing industrial anhydrous strontium chloride powder, saccharose, the molecular sieve, and industrial alcohol to obtain a mixture; uniformly mixing the mixture in a mixer to obtain semi-dry mixed powder; adding the semi-dry mixed powder into a closed container which can be opened to carry out mechanical vibration so as to obtain a wet sample block; sintering the wet sample block at 350-450 DEG C for 3-5 hours to obtain the ammonia-storage mixture porous solid sample block containing the amorphous carbon. The prepared ammonia-storage mixture solid sample block containing metal salts and the amorphous carbon not only keeps the ammonia storage characteristic of the metal salts, but also is improved in adsorption efficiency and adsorption capacity; proper molecular sieve is also added in the preparation process of the ammonia-storage active mixture, so that the mixture solid sample block is microcosmically rich in nanometer pore path, macroscopically macroporous, fast in ammoniating performance, quite good in ammonia storage performance, and capable of rapidly releasing ammonia gas, can be recycled without crushing, has efficient adsorption and desorption characteristics and therefore is suitable for the adsorption and storage of the ammonia gas.

Description

technical field [0001] The invention relates to an ammonia-storage active mixture sample block with abundant pores and a preparation method thereof, which are applied to a post-treatment system of automobile exhaust and a hydrogen fuel cell system of a new energy automobile. Background technique [0002] At present, the world is facing the dual challenges of energy crisis and environmental crisis. People are still facing many problems in the selection of technical means to meet the emission standards of traditional vehicles, and in the fuel supply technology of new energy vehicles. [0003] In terms of traditional automobiles, the SCR after-treatment system relies on the precise supply of urea reducing agent and decomposes it into ammonia gas at the front end of the catalyst to remove NOX hazards, achieve the purpose of purifying exhaust gas, and achieve the vehicle's National 4 or above standards. However, in actual use, there are many deficiencies and difficulties in the ...

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Problems solved by technology

This patent uses solid material for direct compression molding, uses binder, only declares that it may be silica fiber binder, and does not add the proportion, and other claims and examples only state that the solid material may include Composition of granular materials, porous materials, crystalline materials, amorphous materials or their combinations, without clear claim details, it is almost impossible for those skilled in the industry to implement

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