Mesoporous magnesium oxide material and preparation method thereof

Abstract

The invention discloses a mesoporous magnesium oxide material and a preparation method thereof, and belongs to the technical field of preparation and application of magnesium oxide materials. Glucoseis added into water to obtain a glucose aqueous solution; magnesium nitrate is added into the glucose aqueous solution and stirred for 5-10 min under the condition of room temperature, and a magnesiumnitrate and glucose aqueous solution is obtained; the magnesium nitrate and glucose aqueous solution is subjected to heat treatment at the temperature of 100-120 DEG C for 24-48 hours, and water molecules in the solution are evaporated to obtain a magnesium nitrate and glucose mixture; finally, the mixture is subjected to heat treatment at 500-600 DEG C for 2-4 hours to obtain the mesoporous magnesium oxide material. The prepared mesoporous magnesium oxide material is of a three-dimensional porous structure, the pore size is 2-10 nm, the volume of pores is 0.5-1.5 cm<3>/g, and the BET specific surface area is 100-300 m<2>/g. The prepared mesoporous magnesium oxide material is large in specific surface area, high in porosity and controllable in pore size distribution, and also has excellent characteristics of the magnesium oxide materials. The mesoporous magnesium oxide material has important application prospects in many fields due to the special mesoporous structure.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of magnesium oxide materials, and specifically relates to a mesoporous magnesium oxide material prepared by using glucose molecules as templates and a preparation method thereof. The mesoporous magnesium oxide material has a large specific surface area and large pores Rate and adjustable pore structure. Background technique [0002] Mesoporous magnesia materials have the advantages of large specific surface area, large porosity, and easy control of pore structure, especially taking into account the advantages of mesoporous structure and excellent physical and chemical properties of magnesia materials, which are unmatched by other materials. Photoelectric, flame retardant and other fields have been widely used. The increasingly wide range of applications puts forward more demands on the structure and properties of mesoporous magnesia materials. Seeking simple and efficient prep...

AI Technical Summary

Problems solved by technology

Ordered mesoporous carbon materials prepared with ordered mesoporous silica as a template are used to prepare mesoporous magnesia materials. Although ordered mesoporous magnesia materials can be obtained, the synthesis steps of this method are complicated and costly. , low yield, not suitable for large-scale industrial production

The soft template method using amphiphilic organic molecules or block copolymers as templates has also been tried to prepare mesoporous magnesium oxide materials, due to the faster hydrolysis rate of magnesium ions under alkaline conditions and the relationship between magnesium ions and templates. It is difficult to form an effective force, so the soft template method is difficult to prepare mesoporous magnesium oxide materials

[0003] Reducing the particle size of magnesium oxide materials is also an effective way to increase the specific surface area. However, small-sized magnesium oxide nanoparticles need to be synthesized with the assistance of dilute solutions or surfactants. Functional processing brings a lot of inconvenience

In addition, commercial organic small molecules with wide sources and low cost are also used as templates to prepare mesoporous magnesia materials. However, the prepared magnesia materials have low surface area and low porosity, making it difficult to take advantage of mesoporous materials.

In summary, although a variety of methods have been used to prepare mesoporous magnesium oxide materials, there are still many problems to be solved in the current synthesis methods, for example, the preparation method is complicated, and the prepared mesoporous magnesium oxide materials have poor mesoporous structure. Wait

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