Ammonia storage mixture porous solid sample block containing ceramic fibers and preparation method thereof

Abstract

The invention relates to an ammonia storage mixture porous solid sample block containing ceramic fibers. The ammonia storage mixture porous solid sample block is prepared by mixing anhydrous strontium chloride, the ceramic fibers and industrial clay, and is characterized in that a preparation method comprises the following specific steps that: the industrial anhydrous strontium chloride salt powder, the ceramic fibers, the industrial clay, the deionized water and the industrial alcohol are stirred uniformly through a stirring machine so as to form semi-dry mixed powder; and the powder is added into an openable sealed container for mechanical vibration and drying. The prepared ammonia storage mixture porous solid sample block has a super strong absorption ability, and furthermore, is stable in structure and high in mechanical strength; during the process of preparing the ammonia storage mixture porous solid sample block, the industrial clay in proper quantity is further added; as the clay mineral has plasticity after being wetted by water, the clay mineral can be transformed and kept in an original shape for a long term under smaller pressure; the specific surface area is large; the grains have electronegativity; good physical adsorbability and surface chemical activity are provided; and the viscosity and the absorption ability of the mixture porous solid sample block after being dried can be further improved.

Description

technical field [0001] The invention relates to a porous solid sample block of an ammonia storage mixture containing ceramic fibers and a preparation method thereof, which is applied to a vehicle tail gas post-treatment system and a fuel cell system. Background technique [0002] Energy crisis and environmental pollution are two very difficult problems that human beings must face in the 21st century. People still face many problems in the selection of technical means to meet the emission standards of traditional vehicles and the fuel supply technology of new energy vehicles. problem. [0003] The traditional exhaust gas after-treatment system of internal combustion engine vehicles 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, so as to purify the exhaust gas and achieve the vehicle's National 4 or above standards. However, in actual use, there are many shortcomings and difficulti...

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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

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