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Fluorinated nano-diamond material, preparation method and application thereof

A technology of nano-diamond and fluorinated nano-technology, which is applied in chemical instruments and methods, catalysts, organic chemistry, etc., can solve the problems of environmental protection and safety, and achieve the effects of mild and controllable conditions, intact crystal structure, and simple preparation process

Active Publication Date: 2018-12-04
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current fluorinated nanodiamond process is neither environmentally friendly nor safe, such as the use of highly toxic fluorine gas (F 2 ), hydrogen fluoride (HF), xenon difluoride (XeF 2 ) and ammonium bifluoride (NH 4 HF 2 ) and other fluorine-containing precursors are fluorinated under severe conditions such as high temperature, plasma, laser, and X-rays (Diamond Relat. Mater. 1996, 5, 1021-1025; J. Chem. Soc. Faraday Trans. 1993, 89, 3105-3109; ACS Nano 2018, 12, 1083-1088; Science 1996, 271, 193-195)

Method used

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  • Fluorinated nano-diamond material, preparation method and application thereof
  • Fluorinated nano-diamond material, preparation method and application thereof
  • Fluorinated nano-diamond material, preparation method and application thereof

Examples

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Effect test

Embodiment 1

[0023] Take 40 mg of nanodiamonds in a 25 mL round bottom flask with a magnet, and add 3 mL of perfluoroiodobutane. Place in a constant temperature water bath at 30°C under magnetic stirring, and illuminate with a xenon lamp for 1 hour. After the fluorination is completed, centrifuge, wash, and dry overnight at 80° C. to obtain fluorinated nano-diamonds, wherein the doping amount of fluorine is 0.1 wt%.

Embodiment 2

[0025] Take 40 mg of nanodiamonds in a 25 mL round bottom flask with a magnet, and add 3 mL of perfluoroiodobutane. Place in a constant temperature water bath at 30°C under magnetic stirring, and illuminate with a xenon lamp for 3 hours. After the fluorination is completed, centrifuge, wash, and dry overnight at 80° C. to obtain fluorinated nano-diamonds, wherein the doping amount of fluorine is 0.3 wt%.

Embodiment 3

[0027]Take 80 mg of nanodiamonds in a 25 mL round bottom flask with a magnet, and add 3 mL of perfluoroiodobutane. Place in a constant temperature water bath at 30°C under magnetic stirring, and illuminate with a xenon lamp for 5 hours. After the fluorination is completed, centrifuge, wash, and dry overnight at 80° C. to obtain fluorinated nano-diamonds, wherein the doping amount of fluorine is 0.5 wt%.

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Abstract

Belonging to the technical field of nano-material preparation, the invention relates to a fluorinated nano-diamond material, a preparation method and application thereof in the thermocatalysis field.The method adopts nano-diamond and perfluorinated iodobutane as the raw materials for fluorination for several hours under the illumination of a xenon lamp, then fluorine-doped nano-diamond (with an optimal fluorine doping ratio of 0.3wt%) can be formed, and then the fluorine-doped nano-diamond is applied to the oxidative dehydrogenation reaction of ethylbenzene to prepare styrene, and shows excellent thermocatalytic performance. The preparation method provided by the invention is safe and environment-friendly, the conditions are mild and controllable, and the process is simple. The obtained fluorinated nano-diamond has stable physical and chemical properties, also has good thermocatalytic performance, and has broader application in other industrial catalysis fields.

Description

technical field [0001] The invention belongs to the technical field of nanometer material preparation, and relates to a fluorinated nanometer diamond material, a preparation method thereof and an application thereof in the field of thermal catalysis. Background technique [0002] Styrene (ST) is an important monomer in industry, widely used in polymers, copolymers, raw materials for the production of plastics and synthetic rubber. Such as rubber modified impact polystyrene, acrylonitrile-butadiene-styrene trimer (ABS), styrene-acrylonitrile copolymer (SAN) and styrene-butadiene rubber (SBR), etc. (ChemSusChem 2016, 9 , 662-666; ACS Catal. 2015, 5, 6426-6435;). The method for industrially preparing styrene is mainly to prepare styrene by direct thermocatalytic dehydrogenation (DH) of ethylbenzene with the help of a catalyst (Appl. Catal. A: Gen. 1994, 112, 117-124; Appl. Catal. A: Gen. 1995, 133, 219-239; Chem. Commun. 2014, 50, 7810-7812; Angew. Chem. Int. Ed. 2010, 49, 86...

Claims

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Application Information

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IPC IPC(8): B01J21/18C07C5/333C07C15/46
CPCB01J21/18C07C5/333C07C2521/18C07C15/46
Inventor 王心晨罗志珊郭芳松周敏
Owner FUZHOU UNIVERSITY
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