Zeolite molecular sieve material which has high-efficiency CO2 capturing function and preparation method thereof

Abstract

The invention discloses a zeolite molecular sieve material which has a high-efficiency CO2 capturing function. Zeolite molecular sieves are used as carrier of the material loaded with metal positive ions. The metal positive ions exchange with positive ions on the surface of the zeolite molecular sieves by the ion exchange method to be introduced into tunnels on the surface of the zeolite molecular sieves, but the internal tunnels of the zeolite molecular sieves maintain the original state. According to the invention, an organic reagent is adsorbed in the internal tunnels of the zeolite molecular sieves in advance; then, under the protection of the organic reagent, the positive ions on the surface of the zeolite molecular sieves is exchanged by metal positive ions by the ion exchange method, but the internal positive ions do not participate in the ion exchange reaction; and by vacuum and high-temperature activation, the organic reagent is removed from the internal tunnels of the zeolite molecular sieves. In comparison with the prior art, the functional zeolite sieves material provided by the invention is used to enhance the selective adsorption capability of CO2 and simultaneously raise the adsorption quantity of CO2, and has the high-efficiency CO2 capturing and separating function.

Description

technical field [0001] The invention relates to the technical field of functional zeolite molecular sieves, in particular to a zeolite molecular sieve material with high-efficiency CO2 capture function and its preparation method, which is suitable for CO2 in power plants, chemical fertilizer plants and other industrial fields. 2 capture and separation. Background technique [0002] With the rapid development of industry, CO 2 emissions are increasing, and the world emits CO into the atmosphere every year 2 The amount reaches 1.85×10 10 Tons, and increasing at a rate of 4% per year, have caused a great negative effect on the climate and ecological balance, leading to serious environmental and ecological problems, which will threaten the survival of human beings. At the same time, CO 2 It is an important carbon resource. Therefore, in order to improve the living environment of human beings, vigorously carry out CO 2 Recycling and reuse of resources is very important. Am...

AI Technical Summary

Problems solved by technology

However, the current zeolite molecular sieves for CO 2 The selective adsorption capacity and adsorption capacity are still low, and cannot have high selectivity and high adsorption capacity at the same time

For example, synthetic zeolite molecular sieve materials with high CO 2 When choosing the adsorption capacity, its CO 2 The adsorption capacity is low; the synthetic zeolite molecular sieve material has high CO 2 When the adsorption capacity, its CO 2 The selective adsorption capacity is low

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