Preparation technology of catalyst used for high temperature catalytic decomposition of N2O

Abstract

The invention discloses a preparation technology of a catalyst used for high temperature catalytic decomposition of N2O. The preparation technology comprises the following steps: dissolving magnesium nitrate, cobalt nitrate, lanthanum nitrate, cerium nitrate, nickel nitrate and zirconium nitrate in water to form a mixed nitrate solution; adding ammonia water and aluminum hydroxide, and carrying out compacting, dehydrating, drying and baking to obtain a powder material; and uniformly rolling the powder material, desalinized water and a bonding agent, drying the rolled materials to obtain a granulation material, compacting the granulation material to form a porous cylinder, and calcining the porous cylinder to obtain the catalyst. The preparation technology has the following advantages: a co-precipitation method is selected, an active component reacts with a carrier substance precursor and a precipitating agent to realize co-precipitation, and the active component interacts with the carrier, so the active component is well and stably dispersed; and the active component and the carrier precipitate are commonly calcined at a high temperature of 1000-1300 DEG C, so the active component of the catalyst has good heat tolerance and difficulty loses, thereby the catalyst has the advantages of high efficiency, good stability and long service life.

Description

technical field [0001] The invention relates to the technical field of industrial catalysis, and more specifically relates to a catalyst for high-temperature catalytic decomposition of N 2 O catalyst preparation process. Background technique [0002] Due to the growth of world population, the rapid development of cities and the continuous increase of energy consumption per capita, the natural environment in which human beings live has been severely impacted, the environmental quality has declined, and the subsequent harm to human health and the destruction of ecosystems It has become a common concern of people, and environmental protection and sustainable development have become one of the most urgent tasks for contemporary people. [0003] The major greenhouse gases currently in the atmosphere include CO 2 ,CH 4 ,N 2 O, HFCs, PFCs and SF 6 . Among them, N 2 O not only produces the greenhouse effect, but also is a serious air pollutant. N 2 O is a trace gas whose co...

AI Technical Summary

Problems solved by technology

However, the catalyst active component of the invention adopts the impregnation method, and the active component is mainly loaded on the outer surface of the carrier, which easily leads to the aggregation of the active component on the outer surface of the catalyst carrier; Large, the active components loaded on the surface of the carrier are aggregated and loaded, the load stability is poor, and it is easy to be washed by the air flow and cause the loss of active components, resulting in rapid decay of catalyst activity and short service life.