Preparation method of composite mesoporous adsorbent material and application thereof

Abstract

The invention discloses a preparation method of a composite mesoporous adsorbent material, and application thereof. The preparation method comprises the following steps: 1, adding an appropriate amount of tellurium nano-wire in crystallization liquid for preparing a mesoporous molecular sieve, and obtaining the molecular sieve with a composite mesoporous structure after the hydrothermal crystallization; 2, taking the molecular sieve in the above step is a template, taking glucose as a carbon source to prepare a mixed solution of the glucose and the composite mesoporous molecular sieve, boosting to 1.2-1.5bar in a pressure vessel and maintaining for 8-10h; 3, filtering and taking out the molecular sieve sufficiently dipped with the carbon source in the step 2, thermally treating for 8h in an oven at 180 DEG C, performing grinding treatment by an agate mortar; and 4, placing a product in the step 3 in a muffle furnace, calcining for 3-5h at 600-800 DEG C, grinding, and soaking in a NaOHsolution, centrifugally separating a black powder product after stirring, and sufficiently washing with deionized water to obtain the product.

Description

technical field [0001] The invention relates to the preparation of an adsorbent material, in particular to the field of preparation of a composite mesoporous structure adsorbent material, which is used in the field of adsorption of organic volatile gases. Background technique [0002] According to the relevant regulations of IUPAC, porous materials are generally divided into microporous materials, mesoporous materials (mesoporous materials) and macroporous materials according to the pore size of materials. Common microporous materials mainly include some molecular sieves, such as X and Y molecular sieves, activated carbon, etc.; and common mesoporous materials mainly include some mesoporous molecular sieves, such as pure silicon-based SBA series, MCM-41, etc. As for macroporous materials , due to its large pore size and wide distribution range, such as most aerogels and ceramic materials are macroporous materials. [0003] Mesoporous materials, due to their standardized por...

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Problems solved by technology

[0006] Although there has been a lot of research on mesoporous materials, in practical applications, we found that there are still many aspects that need to be improved. For example, the use of soft templates, due to the high cost of templates, makes the materials costly and difficult to be widely used. Promote application

In the ordinary hard template method, due to the single choice of the template agent, the size distribution of the prepared mesoporous carbon material is relatively uniform. In practical applications, due to the complexity of the actual environment, such as the adsorption of VOC gas, the size of the gas molecules is different, A single mesoporous structure is difficult to meet the practical requirements, therefore, it is necessary to develop a mesoporous carbon material with strong adaptability

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