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A method and application of mesoscale regulation to prepare bimetallic hexahedral nanosheet ti-ni-mof catalyst

A tix-ni1-x-mofs and bimetallic technology, which is applied in the design and preparation of new materials and environmental protection, can solve the problems of high energy consumption, low efficiency of low-temperature denitrification catalysts, and long time required for catalysts to achieve enhanced Catalytic activity, good catalytic effect, and low-temperature activity improvement effect

Active Publication Date: 2022-08-05
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the invention is to provide a novel low temperature denitrification bimetallic hexahedron nanosheet Ti x -Ni 1-x - A rapid preparation method of MOFs catalysts to solve the problems of low-temperature denitrification catalysts in the current industrial source flue gas treatment, such as the low efficiency of low-temperature denitrification catalysts, the long time required for the preparation of catalysts, and high energy consumption.

Method used

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  • A method and application of mesoscale regulation to prepare bimetallic hexahedral nanosheet ti-ni-mof catalyst
  • A method and application of mesoscale regulation to prepare bimetallic hexahedral nanosheet ti-ni-mof catalyst
  • A method and application of mesoscale regulation to prepare bimetallic hexahedral nanosheet ti-ni-mof catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030]Example 1: Preparation of Ni-MOF catalyst

[0031] (1) Use 5 mL of a mixture of FMES and DCC with a molar ratio of 1:0.52 as a molecular structure directing agent, and stir for 15 min. A pale green solution A was obtained.

[0032] (2) 4.76g of 5,10,15,20-tetraphenylporphyrin nickel was weighed and dissolved in 30ml of N,N-dimethylpropionamide and ethanol (v / v=5:1) solution, stirred 15min. A pale green solution B was obtained.

[0033] (3) Weigh 4.20 g of the ligand 1,3,5-benzenetricarboxylic acid (H 3 BTC) was dissolved in 30 ml of a solution of N,N-dimethylpropionamide and ethanol (v / v=5:1), and stirred uniformly. A clear solution C was obtained.

[0034] (4) Mix solution A and solution B with solution C dropwise, add 2.65 g of n-amyl alcohol as co-surfactant, and stir for 15 min. A pale green solution D was obtained.

[0035] (5) Then put the mixed solution D into an ultrasonic device for 30 min of ultrasonication, so that the metal salt in the solution D and t...

Embodiment 2

[0045] Example 2: Ti 0.14 -Ni 0.86 - Preparation of MOF catalyst

[0046] (1) Use 5 mL of a mixture of FMES and DCC with a molar ratio of 1:0.83 as a molecular structure directing agent, and stir for 15 min. A pale green solution A was obtained.

[0047] (2) Weigh 4.76g of 5,10,15,20-tetraphenylporphyrin nickel and 1.27g of tetrabutyl titanate (C 16 H 36 O 4 Ti) was dissolved in 30 ml of N,N-dimethylpropionamide and ethanol (v / v=5:1) solution, and stirred for 15 min. A pale green solution B was obtained.

[0048] (3) Weigh 4.92 g of the ligand 1,3,5-benzenetricarboxylic acid (H 3 BTC) was dissolved in 30 ml of a solution of N,N-dimethylpropionamide and ethanol (v / v=5:1), and stirred uniformly. A clear solution C was obtained.

[0049] (4) Mix solution A and B with solution C dropwise, add 5.3 g of n-amyl alcohol as co-surfactant, and stir for 15 min. A pale green solution D was obtained.

[0050] (5) Then put the mixed solution D into an ultrasonic device for 30 min...

Embodiment 3

[0060] Example 3: Ti 0.2 -Ni 0.8 - Preparation of MOF catalyst

[0061] (1) Use 5 mL of a mixture of FMES and DCC with a molar ratio of 1:1.26 as a molecular structure directing agent, and stir for 15 min. A pale green solution A was obtained.

[0062] (2) Weigh 4.76g of 5,10,15,20-tetraphenylporphyrin nickel and 1.91g of tetrabutyl titanate (C 16 H 36 O 4 Ti) was dissolved in 30 ml of N,N-dimethylpropionamide and ethanol (v / v=5:1) solution, and stirred for 15 min. A pale green solution B was obtained.

[0063] (3) Weigh 5.25g of ligand 1,3,5-benzenetricarboxylic acid (H 3 BTC) was dissolved in 30 ml of a solution of N,N-dimethylpropionamide and ethanol (v / v=5:1), and stirred uniformly. A clear solution C was obtained.

[0064] (4) Mix solution A and B with solution C dropwise, add 5.3 g of n-amyl alcohol as co-surfactant, and stir for 15 min. A pale green solution D was obtained.

[0065] (5) Then put the mixed solution D into an ultrasonic device for 30 min of ult...

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Abstract

The invention provides a method and application for preparing a bimetallic hexahedral nanosheet Ti-Ni-MOF catalyst by mesoscale regulation, and belongs to the technical field of catalytic material and nanomaterial preparation. Novel bimetallic Ti with stable bimetallic active sites with strong and high specific surface area was prepared within 2 h by microwave irradiation x ‑Ni 1‑x ‑MOF catalyst, the catalytic efficiency can be as high as 99% at low temperature of 175℃, and Ti has a wide temperature range of 175‑400℃ 0.2 ‑Ni 0.8 ‑MOFs catalysts. The bimetallic hexahedral nanosheet Ti rapidly prepared by microwave method in the present invention 0.2 ‑Ni 0.8 ‑MOFs catalyst is a heterogeneous reaction catalyst with excellent low temperature denitration performance suitable for industrial source flue gas treatment.

Description

technical field [0001] The invention belongs to the technical field of novel material design and preparation and environmental protection, in particular to the preparation of a bimetallic hexahedral nanosheet Ti-Ni-MOFs catalyst, and its practical application as a catalytic material in denitrification of industrial source flue gas. Background technique [0002] Coal, oil and natural gas, as the three main energy sources, are the most important fossil fuels in the world today. Due to the dependence on fossil energy and the increase in national energy consumption demand, although the total amount of nitrogen oxides emissions in my country is decreasing year by year, the amount of nitrogen oxides emitted every year is still not to be underestimated. Therefore, NO x The situation of emission reduction is still grim. The characteristics of industrial source coal-fired flue gas are high in NOx, and due to insufficient coal combustion, the exhaust gas is rich in CO. Therefore, d...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/22B01J37/34B01J35/10B01J37/30C08G83/00B01D53/86B01D53/56B01D53/62
CPCB01J31/1691B01J37/346B01J37/0018B01J37/30C08G83/008B01D53/8628B01D53/864B01D53/865B01J2531/46B01J2531/847B01D2257/404B01D2257/502B01D2258/0283B01J35/618B01J35/617B01J35/633B01J35/647
Inventor 石勇丁越黄磊
Owner DALIAN UNIV OF TECH