A kind of ammonia storage active mixture sample block with rich pores and preparation method thereof

Abstract

The invention relates to a sample block of an ammonia storage active mixture with rich channels, which is composed of anhydrous strontium chloride, amorphous carbon and molecular sieve, and is characterized in that the preparation method thereof, the specific steps are as follows: industrial anhydrous strontium chloride salt powder, Sucrose, molecular sieve and industrial alcohol form a mixture; the mixture is stirred evenly by a mixer to form a semi-dry mixed powder; the semi-dry mixed powder is added to an openable airtight container for mechanical vibration to form a wet body sample block; the sample block is sintered at 350~450°C for 3~5h to obtain a porous solid sample block of the ammonia storage mixture containing amorphous carbon. The ammonia storage mixture solid sample block containing metal salt and amorphous carbon prepared by it not only ensures the ammonia storage characteristics of the metal salt but also improves the adsorption efficiency and adsorption capacity of the mixture sample block. In the process of preparing the ammonia storage active mixture, An appropriate amount of molecular sieve is also added to make the solid sample of the mixture rich in microscopic and nanopore channels, with several large pores in the macroscopic view, with faster ammonia filling and better ammonia storage performance, and can quickly release ammonia gas, which can be recycled without breaking. With high-efficiency adsorption and desorption characteristics, it is suitable for the adsorption and storage of ammonia.

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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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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