A kind of fluorinated nano-diamond material and its preparation method and application

A nano-diamond and fluorinated nano-technology, applied in chemical instruments and methods, catalysts, organic chemistry, etc., can solve problems such as being neither environmentally friendly nor safe, and achieve the effect of intact crystal structure

Active Publication Date: 2021-05-18
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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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  • A kind of fluorinated nano-diamond material and its preparation method and application
  • A kind of fluorinated nano-diamond material and its preparation method and application
  • A kind of fluorinated nano-diamond material and its preparation method and application

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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

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. This method uses nano-diamonds and perfluorinated iodobutane as raw materials and fluorides them under xenon light for several hours to form fluorine-doped nano-diamonds (the optimal ratio of fluorine doping is 0.3 wt%), which is then applied to The oxidative dehydrogenation of ethylbenzene to styrene shows excellent thermocatalytic performance. The preparation method provided by the invention is safe and environment-friendly, with mild and controllable conditions and simple process. The obtained fluorinated nano-diamond has stable physical and chemical properties, and has good thermal catalytic performance, and has broader applications in other industrial catalytic 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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Patent Type & Authority Patents(China)
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 UNIV
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