Carbon fiber-containing ammonia storage mixture porous solid sample coupon and preparation method thereof

Abstract

The invention relates to a carbon fiber-containing ammonia storage active mixture porous solid sample coupon and a preparation method thereof. The ammonia storage active mixture porous solid sample coupon is mainly composed of anhydrous strontium chloride, carbon fibers and industrial ball clay. The preparation method comprises the steps of mixing industrial anhydrous strontium chloride powder, the carbon fibers, the industrial ball clay, ionized water and industrial alcohol; stirring the mixture uniformly with a stirring machine to form half-dried mixed powder; adding the half-dried mixed powder to a closed container capable of being opened to perform mechanical oscillation so as to form a wet sample coupon; and drying the coupon under a condition with a temperature of 60-80 DEG C and a vacuum degree of 10<-1>-1 kPa or drying at a temperature of 100 DEG C. The solid sample coupon guarantees the ammonia storage characteristic of the metal salt, increases the mechanical strength and structure stability of the mixture sample coupon, can prevent the powder falling phenomenon caused by oscillation during the using process from occurrence.

Description

technical field [0001] The invention relates to a porous solid sample block of an ammonia storage mixture containing carbon fiber 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 that ...

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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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