Alkane sensing material, preparation method and use method

A sensing material and alkane technology, applied in the field of chemistry, can solve the problem of being easily interfered by other organic substances, and achieve the effects of easy availability of raw materials, simple raw materials, and mild reaction strips

Inactive Publication Date: 2017-11-24
XIANYANG NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] At present, it is mainly detected by gas chromatography, high performance liquid chromatography and other instruments, but when using the existing detection method for detection, it is easy to be interfered by other organic substances

Method used

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  • Alkane sensing material, preparation method and use method
  • Alkane sensing material, preparation method and use method
  • Alkane sensing material, preparation method and use method

Examples

Experimental program
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preparation example Construction

[0039] The preparation process of alkane sensing material mainly includes the following steps:

[0040] Step A: Preparation of methyl hexamethylenediamine formate: 1,6-hexanediamine, liquid dimethyl carbonate and ferrous salt with a molar ratio of 1:1:1 are dissolved in a certain amount of sodium alkoxide with less than four carbon atoms In the solvent, and under the condition of the reaction temperature of 60-70 ℃, carry out the stirring reaction, and control the stirring reaction time for not less than 8h;

[0041] Step B: Prepare Fe-containing 2+ Polyurethane: the hexamethylenediamine formate obtained above is dissolved in a certain amount of alcohol solvent with four carbon atoms or less, in AlCl 3 ·6H 2 Under the catalysis of O and epoxy resin, the N 2 Or under the protection of an inert gas atmosphere, stir and heat up, and control the reaction temperature not lower than 160°C, and the reaction time is not less than 1.5h;

[0042] Step C: Preparation of alkane sensin...

Embodiment 1

[0049] Step O: Preparation of sodium methoxide: remove the sodium from the kerosene, wipe off the kerosene, put it into methanol solution, and make excess sodium until no bubbles come out and the reaction is complete.

[0050] Step A1: Preparation of methyl hexamethylenediamine formate: put 11.6g of 1,6-hexanediamine in a three-necked flask, add 41.3mL liquid dimethyl carbonate, 0.7g sodium methoxide, 0.9343g FeSO 4 , keeping the temperature at 60-70° C., stirring for 8 hours, cooling the white liquid obtained by the reaction, filtering, and drying to obtain a white solid powder.

[0051] Step B1: Prepare Fe-containing 2+ Polyurethane: Weigh 9.003g of the product obtained in the above step A1 and put it into a 250mL three-necked flask, add 2.89mL of ethylene glycol, and add 0.7488g of AlCl 3 ·6H 2 Under the catalysis of O and 3.31g epoxy resin, N 2 Stir at the same time to raise the temperature, the temperature is kept at about 160°C, and the reaction is completed after 1.5...

Embodiment 2

[0076] Embodiment 2: Utilize alkane sensing material to detect n-heptane:

[0077] Step a2: Place the alkane sensing material prepared in Example 1 above on a horizontally cleaned glass substrate, cast it into a film, and put the film together with the glass substrate in an oven at 45°C to dry for 0.5h , to prepare alkane sensing composite membrane;

[0078] Step b2: scanning the ethanol soaked in the alkane sensing composite film in the sample cell by a fluorescence spectrophotometer to obtain a corresponding blank fluorescence spectrum;

[0079] Step c2: scan the n-heptane solutions of different concentrations immersed in the alkane sensing composite membrane in the sample pool by a fluorescence spectrophotometer, and obtain the sample fluorescence spectra corresponding to the concentrations of the n-heptane solutions;

[0080] Step d2: By comparing the blank fluorescence spectrum obtained in step b2 with the sample fluorescence spectrum obtained in step c2, it can be seen ...

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PUM

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Abstract

The invention provides an alkane sensing material, a preparation method and a use method. The alkane sensing material is formed by hybrid inlaying of amino and FeS nanoparticles. The alkane sensing material has a structural general formula shown as the specification, wherein R1, R2 and R3 are group containing a structure shown as the specification, and n is a positive integer of not less than 40. A series of experimental results show that the alkane sensing material provided by the invention has characteristic sensing properties to alkane.

Description

technical field [0001] The invention relates to the technical field of chemistry, in particular to an alkane sensing material, a preparation method and a use method. Background technique [0002] As a common organic solvent, alkanes are highly volatile, and often enter the human body through inhalation or skin absorption, causing acute or chronic poisoning of the human body. Therefore, the toxicity damage of alkanes is relatively strong. In addition, some alkanes are flammable, and there is a danger of explosion when encountering high-temperature heat sources and open flames; some alkanes can form an explosive mixture when mixed with air when they volatilize to a certain amount. Alkanes have attracted widespread attention. Therefore, establishing a detection method for alkanes is an important part of realizing effective control, management and early warning of alkanes. [0003] At present, it is mainly detected by gas chromatography, high performance liquid chromatography ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/06C08G61/04G01N21/64
CPCC08G61/04C08G2261/11C08G2261/143C08G2261/228C08G2261/3326C08G2261/354C08G2261/522C08G2261/72C09K11/06C09K2211/14G01N21/6428
Inventor 王珊
Owner XIANYANG NORMAL UNIV
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