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A kind of preparation method of porous material supported nickel oxide catalyst

A technology of porous material and nickel oxide is applied in the field of preparation of porous material-supported nickel oxide catalyst, which can solve the problems of high carrier price and low activity, and achieve the effect of improving the ability of conducting electrons

Active Publication Date: 2018-12-28
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing a porous material supported nickel oxide catalyst in order to overcome the shortcomings of the prior art carrier such as high price and low activity

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] According to the amount of 0.8mmol octaalkyltrimethylammonium bromide per gram of bentonite, the bentonite that has passed through a 50-mesh sieve is added to the octaalkyltrimethylammonium bromide solution with a mass percentage concentration of 1%. Stir in a constant temperature water bath for 6 hours, age for 24 hours, centrifuge, remove the supernatant to obtain octaalkyltrimethylammonium bromide-modified bentonite solids; mix (3-aminopropyl)triethoxysilane, salicylaldehyde Add 4 mol of nickel chloride hexahydrate to 40 mL of ethanol at a molar ratio of 1:1:1 to form a solution, react at 35°C for 8 hours, add octaalkyltrimethylammonium bromide-modified bentonite solid, and stir 4h, precipitation and separation, the nickel-containing organic complex generated by the reaction is inserted between the bentonite layers under the action of distribution to form a nickel-containing organic complex pillared bentonite; the nickel-containing organic complex pillared bentonite i...

Embodiment 2

[0019] According to the amount of 0.5mmol octaalkyltrimethylammonium bromide per gram of bentonite, the bentonite that has passed through a 20-mesh sieve is added to the octaalkyltrimethylammonium bromide solution with a mass percentage concentration of 0.1%. Stir in a constant temperature water bath for 5 hours, age for 12 hours, centrifuge, remove the supernatant to obtain octaalkyltrimethylammonium bromide-modified bentonite solids; mix (3-aminopropyl)triethoxysilane, salicylaldehyde Add 2 mol of nickel chloride hexahydrate to 20 mL of ethanol at a molar ratio of 1:1:1 to form a solution, react at 20°C for 6 hours, add octaalkyltrimethylammonium bromide-modified bentonite solid, and stir 2h, precipitation and separation, the nickel-containing organic complex generated by the reaction is inserted between the bentonite layers under the action of distribution to form a nickel-containing organic complex pillared bentonite; the nickel-containing organic complex pillared bentonite...

Embodiment 3

[0022] According to the amount of 0.6mmol octaalkyltrimethylammonium bromide per gram of bentonite, the bentonite that has passed through a 30 mesh sieve is added to the octaalkyltrimethylammonium bromide solution with a concentration of 1% by mass percentage, at 70 ° C Stir in a constant temperature water bath for 6 hours, age for 24 hours, centrifuge, remove the supernatant to obtain octaalkyltrimethylammonium bromide-modified bentonite solids; mix (3-aminopropyl)triethoxysilane, salicylaldehyde Add 3 mol of nickel chloride hexahydrate to 30 mL of ethanol at a molar ratio of 1:1:1 to form a solution, react at 35°C for 8 hours, add octaalkyltrimethylammonium bromide-modified bentonite solid, and stir 3h, precipitation and separation, the nickel-containing organic complex generated by the reaction is inserted between the bentonite layers under the action of distribution to form a nickel-containing organic complex pillared bentonite; the nickel-containing organic complex pillare...

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Abstract

The invention discloses a preparation method of a porous material-supported nickel oxide catalyst. The method includes the following steps in sequence: adding bentonite to an octalkyltrimethylammonium bromide solution, stirring at a constant temperature, aging, and centrifugal separation to obtain an octalkyltrimethylammonium bromide-modified bentonite solid; adding (3- Aminopropyl)triethoxysilane, salicylaldehyde and nickel chloride hexahydrate were added to ethanol in a molar ratio of 1:1:1 () to form a solution, and modified by adding octaalkyltrimethylammonium bromide The bentonite solid is stirred, precipitated and separated to form a nickel-containing organic complex pillared bentonite; the product is placed in a tube furnace, roasted under the condition of nitrogen, then air is introduced, and finally the nitrogen is continued to be introduced, and then the heating is stopped. After cooling to room temperature, a silica-pillar bentonite-based porous material supporting a nickel oxide catalyst was obtained. The nickel oxide in this material is evenly distributed on the pore walls of the three-dimensional pore channels, and has good adsorption and catalytic effects on reactants.

Description

technical field [0001] The invention relates to a preparation method of a nickel oxide catalyst supported by a porous material, belonging to the field of preparation of catalytic materials. Background technique [0002] Most transition metal oxides have excellent electrical and optical properties, as well as excellent catalytic properties. Nano-nickel oxide is an important functional material. Due to its unique size and shape, it has important applications in industrial fields such as coating, catalysis, capacitive electrodes, light absorption, and gas sensing. According to the different requirements for the shape and size of nanomaterials, nickel oxide nanoparticles, nanorods, nanowires, nanofibers, and nanosheets have been prepared by various methods. However, nanomaterials have their inherent disadvantages in the process of use: they are easy to agglomerate, so they need to be loaded on the surface of the carrier to obtain the best use effect. [0003] Nickel oxide cata...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J35/10
CPCB01J23/755B01J35/60
Inventor 彭明国葛秋凡李志宏
Owner CHANGZHOU UNIV
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