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Preparation method of trace nickel regulated manganese oxide catalyst as well as product thereof and application

A manganese oxide and catalyst technology, which is applied in the field of preparation of manganese oxide catalyst regulated by trace nickel, can solve the problems of activity change and poor stability, and achieve the effect of improving catalytic performance

Active Publication Date: 2020-05-22
SHANGHAI NAT ENG RES CENT FORNANOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Nevertheless, compared with noble metals, the performance of manganese oxide is still unsatisfactory, mainly due to its more crystalline structure, which will undergo changes in crystalline phase structure after treatment at different temperatures, resulting in changes in activity and showing poor stability. sex

Method used

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  • Preparation method of trace nickel regulated manganese oxide catalyst as well as product thereof and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A manganese oxide catalyst regulated by a trace amount of nickel is obtained by introducing a trace amount of nickel into manganese oxide, with the help of surfactant P123 guiding effect, and co-precipitation and hydrothermal action, and is prepared according to the following steps:

[0024] (1) Calculate and weigh 0.2908 g nickel nitrate hexahydrate (Ni(NO 3 ) 3 ·6H 2 O) and 17.5371 g of manganese nitrate aqueous solution with a mass fraction of 50% were dissolved in 50 mL of deionized water, stirred and dissolved at room temperature to obtain a solution;

[0025] (2) Calculate according to the (Ni+Mn):P123 mass ratio of 10:1 and weigh 0.2751 g of P123, and dissolve it in 5 mL of anhydrous methanol at room temperature to obtain a solution;

[0026] (3) Calculate according to (Ni+Mn):dihydrate oxalic acid molar ratio of 1:1.1 and weigh 6.9333 g dihydrate oxalic acid, dissolve in boiling water to obtain a solution;

[0027] (4) Transfer the solutions obtained in steps...

Embodiment 2

[0033] A kind of trace nickel regulates the manganese oxide catalyst, is prepared according to the following steps:

[0034] (1) Calculate and weigh 0.1454 g nickel nitrate hexahydrate (Ni(NO 3 ) 3 ·6H 2 O) and 17.7160 g of manganese nitrate aqueous solution with a mass fraction of 50% were dissolved in 50 mL of deionized water, stirred and dissolved at room temperature to obtain a solution;

[0035] (2) Calculate according to the (Ni+Mn):P123 mass ratio of 10:1 and weigh 0.2749 g of P123, and dissolve it in 5 mL of anhydrous methanol at room temperature to obtain a solution;

[0036] (3) Calculate according to (Ni+Mn):dihydrate oxalic acid molar ratio of 1:1.1 and weigh 6.9333 g dihydrate oxalic acid, dissolve in boiling water to obtain a solution;

[0037] (4) Transfer the solutions obtained in steps (1), (2) and (3) to a hydrothermal kettle under the condition of a 60°C water bath. After stirring for 0.5-1 h, place the hydrothermal kettle at 120°C, heat 12 h;

[0038] ...

Embodiment 3

[0043] A kind of trace nickel regulates the manganese oxide catalyst, is prepared according to the following steps:

[0044] (1) Calculate according to the Ni:Mn molar ratio of 1:50-1:500 and weigh 0.0727 g nickel nitrate hexahydrate and 17.8055 g manganese nitrate aqueous solution with a mass fraction of 50% in 50 mL deionized water, stir at room temperature dissolve to obtain a solution;

[0045](2) Calculate according to the (Ni+Mn):P123 mass ratio of 10:1 and weigh 0.2748 g of P123, and dissolve it in 5 mL of anhydrous methanol at room temperature to obtain a solution;

[0046] (3) Calculate according to the (Ni+Mn): oxalic acid dihydrate molar ratio of 1:1.1 and weigh 6.9333 g oxalic acid dihydrate, dissolve in boiling water to obtain a solution, wherein the concentration of oxalic acid is 1.8-2.2 mol / L;

[0047] (4) Transfer the solutions obtained in steps (1), (2) and (3) to a hydrothermal kettle under the condition of a 60°C water bath. After stirring for 0.5-1 h, pla...

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Abstract

The invention discloses a preparation method of a trace nickel regulated manganese oxide catalyst as well as a product thereof and application. The trace nickel regulated manganese oxide catalyst is prepared by introducing trace nickel into manganese oxide; and through the combined action of coprecipitation and hydrothermal treatment by means of the guide function of a surfactant P123. The preparation method comprises the following steps: under a water bath condition of 60 DEG C, introducing a solution containing nickel, manganese, the P123 and oxalic acid into a hydrothermal kettle, stirringfor a certain period of time, and putting the product into an oven at 120 DEG C to obtain the catalyst, the molar ratio of the nickel to the manganese being (1:50)-(1:500), and the mass ratio of (Ni +Mn) to the P123 being 10: 1. The obtained product improves the structural stability of manganese oxide by promoting growth and substitution of trace nickel in manganese oxide crystal lattices, and effectively promotes the catalytic activity of manganese oxide on propane.

Description

technical field [0001] The invention belongs to the technical field of catalysis and environmental protection, and in particular relates to a preparation method of a manganese oxide catalyst regulated by a trace amount of nickel and its product and application. Background technique [0002] As we all know, the development of modern industry has further aggravated air pollution and brought serious environmental problems. The atmospheric environment, which is closely related to people's lives, has suffered serious threats and seriously endangered people's health. Among the three major air pollutants (CO, NOx, HC), especially hydrocarbons are the most difficult to remove, mainly due to their high C-H bond energy and stable properties. Hydrocarbons can cause cancer, and if they interact with nitrogen oxides, photochemical smog will occur, resulting in more harmful secondary pollution. Therefore, the deep treatment of hydrocarbons has become a common concern of people. [0003]...

Claims

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Application Information

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IPC IPC(8): B01J23/889F23G7/07
CPCB01J23/8892F23G7/07F23G2209/14Y02A50/20
Inventor 崔大祥袁静蔡婷赵昆峰金彩虹
Owner SHANGHAI NAT ENG RES CENT FORNANOTECH