A green and efficient synthesis method of copper-doped sba-15 mesoporous molecular sieve material

Abstract

The invention discloses a green and high-efficiency synthesis method of copper-doped SBA-15 mesoporous molecular sieve material. The method comprises the following steps: 1) adding Na 2 S 2 o 8 Dissolve in water, add TEOS and stir, and irradiate with ultraviolet light until the solution is clear to obtain M solution; 2) Dissolve P123 in water, add copper salt and stir to obtain N solution; 3) Mix M solution and N solution evenly to form a suspension Continue the reaction, transfer the reaction product and mother liquor to polytetrafluoroethylene for hydrothermal crystallization, filter, dry and calcinate to obtain a blue product after cooling. The present invention shortens the traditional reaction time of 48 hours to 16-24 hours, so that the energy consumption and time are less than the traditional method, and the efficiency is higher. At the same time, the whole reaction is carried out in a neutral environment, and the reaction process is green and pollution-free.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and in particular relates to a green and efficient synthesis method of copper-doped SBA-15 mesoporous molecular sieve materials. Background technique [0002] SBA-15 mesoporous molecular sieve is often used in related fields such as catalysis, adsorption separation and ion exchange due to its regular pore structure, extremely high specific surface area, and narrow pore size distribution. However, the unactivated SBA-15 lacks chemical activity, and its application in the chemical industry is very limited. A convenient way to activate SBA-15 is to dope other atoms in its skeleton structure, so that it has ion exchange capacity, high density of acid centers, and various catalytic activities. In particular, copper-doped SBA-15 can generate high-density acid centers, exhibit good catalytic activity, and has a broad application prospect in the field of catalysis. [0003] At ...

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Problems solved by technology

[0004] Summarizing the above method, it is found that the prior art has the following defects: (1) it is not easy to synthesize a single copper-doped SBA-15, because under strongly acidic conditions, the metal mainly exists in the form of cations, and it is difficult to form Cu-O-Si with Si (2) the reaction of the above-mentioned synthetic copper-doped SBA-15 is carried out in an acidic environment, and the follow-up waste liquid needs to be treated, which causes cost rise and is easy to cause environmental pollution; (3) the above-mentioned method is time-consuming Long, no less than 80h, there are defects of high energy consumption and low efficiency

[0005] By searching the existing technologies at home and abroad, there is no report on the synthesis method of copper-doped SBA-15 mesoporous molecular sieve materials under acid-free and alkali-free conditions, with low energy consumption, short time and high efficiency.

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