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A heteronuclear polymetallic organic framework material and its preparation and application in denitrification and mercury removal

An organic framework and multi-metal technology, applied in the field of flue gas pollutant control, can solve the problems of poor water vapor poisoning ability, high catalytic temperature, and low catalytic efficiency, and achieve short production cycle, simple preparation method, low-temperature denitrification and mercury removal high efficiency effect

Active Publication Date: 2021-04-06
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention solves the problem of low catalytic efficiency, high catalytic temperature, and resistance to SO in the prior art. 2 And the technical problem of poor poisoning ability of water vapor

Method used

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  • A heteronuclear polymetallic organic framework material and its preparation and application in denitrification and mercury removal
  • A heteronuclear polymetallic organic framework material and its preparation and application in denitrification and mercury removal
  • A heteronuclear polymetallic organic framework material and its preparation and application in denitrification and mercury removal

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preparation example Construction

[0029]A method of preparation of a heterical multi-metal organic skeleton material comprising the step of: dissolving a certain amount of transition metal salt 1 in deionized water or anhydrous methanol, preparing solution I, and a certain amount of transition metal salt material II is dissolved in deionized water or anhydrous methanol, at least a halide of a transition metal salt, a quantity of 1,3,5-phenyltriphenic acid (H3BTC) or benzoic acid (H2BTC was dissolved in anhydrous ethanol with N, N-dimethylformamide (DMF) mixed solution (mixed solution volume ratio 1: 1) to prepare solution III. The solution I, II was transferred to a reaction kettle containing a solution II for a mixed solution IV after a certain ratio, and the mixed solution IV was subjected to ultrasound or microwave treatment for a certain period of time, and was placed in an oven or reaction furnace to generate crystallization. Get the initial sample of the powder. Solvents such as water, anhydrous methanol or an...

Embodiment 1

[0038](1) Put a certain amount of Cu (NO3)2· 3h2O Solution I is prepared in deionized water at a mass volume ratio of 1:30, and a quantity of FeCl3· 6h2O Preparation of solution II in anhydrous methanol in an anhydrous methanol in anhydrous metallogenic volume ratio in anhydrous methane (h).3BTC) was dissolved in anhydrous ethanol with a mixed solution of anhydrous ethanol (mixed solution volume ratio 1: 1) in a molar ratio of 1:10. Solution III. The solution I, II was transferred to the reactor of the copper iron molar ratio of 0.5, and the mixed solution IV was prepared in a reaction kettle containing a solution III, and the mixed solution IV was 100 kHz / 600 W ultrasonic treatment for 20 min, and placed in an oven or reaction furnace 120 ° C for drying treatment, producing the initial sample of the powder. Water was washed, purified, dried to give initial samples, purified, and dried to give the initial heterodal multi-metal organic skeleton material (MOFS). The initial hetero-m...

Embodiment 2

[0042](1) Put a certain amount of Cucl2· 2h2O Solution I is prepared in deionized water in a mass volume ratio of 1:50, and a quantity of MN (NO3)2· 4h2O Preparation of solution II in anhydrous methanol in anhydrous methanol in anhydrous metallocetic volume ratio in anhydrous methane (h).3BTC) was dissolved in anhydrous ethanol and a mixed solution of anhydrous ethanol and DMF in a mixed solution of 1: 2. The solution I, II was transferred to the proportion of copper manganese mole ratio 0.8, and the mixed solution IV was transferred to a reaction kettle containing a solution III, and the mixed solution IV was subjected to 1000 MHz / 800W microwave treatment for 60 min, and placed in an oven or reactive furnace 120 ° C for drying treatment, producing the initial sample of the powder. Water was washed, purified, dried to give initial samples, purified, and dried to give the initial heterodal multi-metal organic skeleton material (MOFS). The obtained initial heteroa multi-metal MOFS w...

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Abstract

The invention relates to a heteronuclear multi-metal organic framework material and its preparation and application in denitrification and demercury removal, and belongs to the related technical field of flue gas pollutant control. The preparation method of the present invention dissolves 1,3,5-trimesic acid or terephthalic acid in an organic solvent, and then adds a mixed solution of various transition metal salts containing different metal elements, and the various transition metal salts At least one of them contains chlorine element or bromine element and is heated to obtain a crystalline heteronuclear multi-metal organic framework hybrid material. The heteronuclear polymetallic organic framework material is fully contacted with flue gas containing nitrogen oxides and elemental mercury, so as to realize the application of catalytic denitrification and demercury removal. The invention utilizes the heteronuclear multi-metal organic framework material to realize the high-efficiency and low-temperature joint removal of nitrogen oxides and mercury, and the new material has better anti-SO 2 / Water vapor poisoning ability, with good thermal and chemical stability.

Description

Technical field[0001]The present invention belongs to the field of flue gas pollutant control, and more particularly to a non-multi-metal organic skeleton material and the application of preparation and denitrification.Background technique[0002]NOxAnd mercury is a typical harmful contaminant in industrial flue gas and exhaust, which is easy to harm to human body and environment. Performing a flue gas NOx, The joint control of contaminants such as Hg is very necessary. More mature combined control methods in domestic and foreign coal-fired power plants are selective catalytic reduction (SCR) technology, catalytic reduction NOxWhile it is not easy to remove, mercury HG0Also catalytic oxidation is more likely to remove ionic mercury. However, the vanadium tungsten series in the field of coal-resistant sectors (V2O5-Wo3 / TiO2The catalyst does not adapt to the demarcamptidification requirements of low-temperature smoke in the petrochemical industry and the petrochemical industry. Lower f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G83/00B01J31/22C07C51/41C07C63/307C07C63/28B01D53/86B01D53/56B01D53/64
CPCB01D53/56B01D53/64B01D53/86B01D53/8628B01D53/8665B01J31/1691B01J31/2239B01J2531/16B01J2531/842C07B2200/13C07C51/412C08G83/008C07C63/307C07C63/28
Inventor 刘晶张振王震杨应举
Owner HUAZHONG UNIV OF SCI & TECH
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