An alkaline earth metal [mg(lna) 2 ] n Single crystal adsorption material and its preparation method and application

Abstract

The invention provides a kind of alkaline earth metal [Mg(lna) 2 ] n The single crystal adsorption material and its preparation method and application belong to the technical field of preparation of VOCs gas adsorption materials, and the method includes the following steps: S1, after mixing isonicotinic acid and magnesium chloride at a molar ratio of 1:0.2-2, adding absolute ethanol solution , and stir evenly to obtain a mixed liquid; S2. After sealing the mixed liquid of S1 in the inner tank of the reactor, place the reactor in an electric blast drying oven, and raise the temperature to 90-180 °C at a rate of 5-40 °C / h. ℃, keep warm for 30-45h; then cool down to 15-35℃ at a rate of 0.5-5.0℃ / h; S3, purify the reaction product obtained in S2 to obtain alkaline earth metal [Mg(lna) 2 ] n Single crystal adsorbent material. The method mainly adopts a solvent synthesis method and is formed through a one-step reaction. The preparation process is simple, the cost is low, and the energy consumption is low, and the prepared adsorption material has high purification efficiency for the VOCs gas in the wood drying industry.

Description

technical field [0001] The invention belongs to the technical field of preparation of VOCs gas adsorption materials, in particular to an alkaline earth metal [Mg(lna) 2 ] n Single crystal adsorption material and its preparation method and application. Background technique [0002] Volatile organic compounds (volatile organic compounds, VOCs) refer to volatile organic compounds with a boiling point lower than 260°C and a saturated vapor pressure greater than 133.322Pa at normal temperature and pressure. They are characterized by strong volatility, irritation and toxicity. It is a major inducer of human carcinogenesis. [0003] Wood often releases specific VOCs gas pollutants during normal temperature or high temperature drying, such as terpenoids (α-pinene, β-pinene, myrcene, camphene, etc.), non-terpenes (tetrachloride carbon, aromatic hydrocarbons, carboxylic acids, formaldehyde, acetaldehyde, etc.), etc. Such as α-pinene, inhalation, ingestion or absorption through the...

AI Technical Summary

Problems solved by technology

[0005] Among the adsorption materials reported in the literature, the preparation process of activated carbon and its modified materials is relatively cumbersome, and its adsorption performance is greatly affected by the carbonization time. Carbon graphitization leads to difficulty in activation, and also destroys the internal pore structure, surface active sites and surface chemical properties of activated carbon materials, reducing the adsorption capacity

Molecular sieves have energy loss and environmental pollution problems in the preparation process, and the cost is relatively expensive, and they cannot be used for adsorption under strong acid / strong alkali conditions, resulting in low purification efficiency

Images