Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for preparing metal-organic framework materials for detecting oxidizing gases

A metal-organic framework and oxidizing gas technology, applied in the field of gas sensing, can solve the problems of visualization, inability to use independently and color change, etc., achieve good sensing performance, easy to synthesize in large quantities, and stabilize the skeleton structure

Active Publication Date: 2021-12-17
杭州市富阳区浙工大银湖创新创业研究院 +2
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing nitrous gas detection methods need to rely on power and cannot be used independently and cannot achieve visualization through simple color changes

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for preparing metal-organic framework materials for detecting oxidizing gases
  • A method for preparing metal-organic framework materials for detecting oxidizing gases

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0029] A method for detecting a metal organic skeleton material for detecting oxidizing gases (e.g., nitrid), including the following steps:

[0030] 1) Mass moon ratio 1.5: 1-3: 1 (preferably 2: 1), 4-cyanopyridine and hydrated hydrazine and mixed into the reaction vessel, stirred at 30-80 ° C (preferably 80 ° C), stirring reflow reaction 4-8h (preferably 4h); filtration to obtain an orange-yellow solid, recrystallized in a mixed solvent of ethanol and water volume ratio of 0.5 to 1.5: 1, and washed with orange-yellow solid dihydro-3,6-2-4 - Pyridyl-1,2,4,5-tetrazine, purity is greater than 98%, spare.

[0031] 2) Dissolve dihydro-3,6 -,4-pyridyl-1,2,4,5-tetrazine in methanol at 40-50 mg / 30-40 mL, and ultrasonic shock during period.

[0032] 3) The resulting reactant was slow (0.05 to 0.2 ml / s of dripping) under stirring (0.9-1.1 mol / L), dihydro-3,6-bis -2- The molar ratio of 4-pyridyl-1,2,4,5-tetrazine and the copper of hexafluorosilicone is 1: 1-2: 1. The resulting mixed ...

Embodiment 1

[0035] Preparation of dihydro-3,6-di-4-pyridyl-1,2,4,5-tetrazine:

[0036] 5.2 g of 4-cyanohydridine and 5 ml of hydrated hydrazine were weighted, respectively, in a 100 ml round bottom flask, with a molar ratio of 4-cyanopyridine and hydrazine hydrazine of 2: 1, stirred at 80 ° C for 4 h. The orange-yellow solid was filtered with a brutal funnel, and the orange powder spare was obtained by recrystallization in a mixed solvent of ethanol and a water volume ratio of 1: 1 and washed.

[0037] Example 1 prepared from the homemade raw material under optimal conditions, with high purity, purity up to 98% (eg figure 2 The desired nuclear magnetic spectrogram: 1 H NMR (500 MHz, DMSO) δ 9.45 (S, 2H), 8.69 (DD, J = 4.6, 1.5 Hz, 4H), 7.77 (DD, J = 4.6, 1.6 Hz, 4H), two in the subsequent embodiment Hydrogen-3,6-di-4-pyridyl-1,2,4,5-tetrazine (H 2 DPT is obtained by synthesizing this example.

[0038] Preparation and application of metal organic skeleton materials:

[0039] 46 mg of dihydro-3...

Embodiment 2

[0042] 46 mg of dihydro-3,6-di-4-pyridyl-1,2,4,5-tetrazine ligand was dissolved in 30 ml of methanol, and then the reactant was placed on the stirrer and slowly dripped during stirring.成 (0.1 ml / s) 2 ml Cusif 6 Aqueous solution (1 mol / L), dihydro-3,6-di-4-pyridyl-1,2,4,5-tetrazine and hexfluoron silicate copper with a molar ratio of 1: 1 (ligand slightly over) . After mixing, the solution was reacted at 50 ° C for 20 h, and then filtered with a bunt funnel to obtain an orange powder, and the methanol was rinsed several times to obtain a sample.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the technical field of gas sensing, and discloses a method for preparing a metal-organic framework material for detecting oxidizing gases. The invention introduces tetrazine functional groups into the framework structure of metal-organic materials, and the incorporated tetrazine units can be It is reversibly oxidized and reduced, accompanied by a sharp color change from orange-yellow to pink, so it can be used as an optical sensor material for oxidizing gases (such as nitrous gas), and has the characteristics of fast and efficient, short response time and visualization, After reversible reduction treatment, it still has a stable skeleton structure and good sensing performance, and can be reused many times.

Description

Technical field [0001] The present invention relates to the field of gas sensing techniques, and more particularly to a method for detecting a metal organic skeleton material for detecting oxidizing gases. Background technique [0002] The gas sensor is widely used to monitor the concentration of different gases, such as methane or carbon monoxide in the coal mine to use portable equipment for personal protection. The ideal sensor should be sensitive and stable enough to work under environmental conditions, and can also generate a short response time, no other devices can be easily perceived, the so-called wireless gas sensor. One of the easiest and most powerful means of sensing signals is visible through material color. In addition, it is necessary to use the power supply to be used independently. [0003] NO x (Nitric) is nitric oxide (NO) and nitric dioxide (NO 2 The general presentation, which is usually released by a motor vehicle and industrial and home combustion process ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00G01N21/78
CPCC08G83/008G01N21/78
Inventor 胡军温慧敏廖才俊
Owner 杭州市富阳区浙工大银湖创新创业研究院
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com