Ammonia storage mixture porous solid sample block containing amorphous carbon and preparation method thereof

Abstract

The invention relates to an ammonia-storage mixture porous solid sample block containing amorphous carbon. The ammonia-storage mixture porous solid sample block is prepared from anhydrous strontium chloride, the amorphous carbon and ceramic fiber. A preparation method of the ammonia-storage mixture porous solid sample block is characterized by comprising the specific steps of: mixing 61-80wt% of industrial anhydrous strontium chloride powder, 4-10wt% of sucrose, 3-10wt% of the ceramic fiber and 5-23wt% of industrial alcohol groups; agitating the mixture uniformly by an agitator for 1-10 hours to form semi-dry mixed powder; adding the semi-dry mixed powder into an openable sealed container to carry out mechanical vibration for 30-60 minutes to form a wet sample block; and sintering the sample block at the temperature of 300-450 DEG C for 2-5 hours to obtain the ammonia-storage mixture porous solid sample block containing the amorphous carbon. The prepared ammonia-storage mixture porous solid sample block containing a metal salt and the amorphous carbon guarantees the ammonia-storage property of the metal salt, and improves the adsorption efficiency and the adsorption capability of the mixture sample block; in a process of preparing the ammonia-storage mixture porous solid sample block, a suitable amount of ceramic fiber is further added; and by adding the ceramic fiber, the whole weight of the mixture sample block is reduced, the heat stability and the mechanical strength of the mixture sample block are improved and the service life is prolonged.

Description

technical field [0001] The invention relates to a porous solid sample block of an ammonia storage mixture containing amorphous carbon and a preparation method thereof, which is applied to an automobile tail gas post-treatment system and a fuel cell system. Background technique [0002] Energy crisis and environmental pollution are two very serious problems that human beings must face in the 21st century. 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] The automobile exhaust after-treatment system is a system that 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 harmful substances, thereby achieving the purpose of purifying exhaust gas. However, in actual use, there are many deficiencies and difficulties in the metered injection of liquid urea t...

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Problems solved by technology

However, this patent uses solid material for direct compression molding, uses a binder, only states that it may be a silica fiber binder, and does not have a dosage ratio, and other claims and examples only declare solid materials It may include 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, thus resulting in this patent

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