Nanometer carbon material containing heteroatoms and preparation method and application thereof, and dehydrogenation reaction method for hydrocarbons

A nano-carbon material and heteroatom technology, applied in nanotechnology, hydrocarbons, hydrocarbons, etc., can solve problems such as lack of consensus, and achieve high selectivity, small structural impact, and good product selectivity.

Active Publication Date: 2016-08-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although a lot of progress has been made in the research on heteroatom doping modification of carbon nanomaterials and their catalytic performance, there is still no consensus on some of the basic issues, and there is still a need for heteroatom doped nanocarbon materials and their preparation methods and In-depth study of catalytic performance

Method used

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  • Nanometer carbon material containing heteroatoms and preparation method and application thereof, and dehydrogenation reaction method for hydrocarbons
  • Nanometer carbon material containing heteroatoms and preparation method and application thereof, and dehydrogenation reaction method for hydrocarbons
  • Nanometer carbon material containing heteroatoms and preparation method and application thereof, and dehydrogenation reaction method for hydrocarbons

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] (1) 20g of multi-walled carbon nanotubes (specific surface area is 136m 2 / g, the oxygen atom content is 0.3% by weight, the total content of all the other non-metallic heteroatoms (nitrogen atom, phosphorus atom and sulfur atom) is 0.03% by weight except oxygen atom, and the total content of metal atom is 0.1% by weight, at 400 The weight loss rate w in the temperature range of -800°C 800 , the weight loss rate w in the temperature range of 400-500°C 500 ,w 500 / w 800 0.12, purchased from Chengdu Organic Chemistry Co., Ltd., Chinese Academy of Sciences) dispersed in deionized water, and dispersed under ultrasonic oscillation conditions, the ultrasonic oscillation conditions include: the frequency is 40 kHz, and the time is 0.5 hours. Hydrogen peroxide was then added and mixed uniformly to obtain an aqueous dispersion. Wherein, hydrogen peroxide is provided in the form of 30% by weight hydrogen peroxide, according to raw material nano-carbon material: hydrogen perox...

Embodiment 2

[0106] The same method as in Example 1 is used to prepare heteroatom-containing nano-carbon materials. The difference is that in step (1), the ratio of multi-walled carbon nanotubes (purchased from Shandong Dazhan Nano Materials Co., Ltd.) as raw material nano-carbon materials Surface area is 251m 2 / g, the weight loss rate w in the temperature range of 400-800°C 800 , the weight loss rate w in the temperature range of 400-500°C 500 ,w 500 / w 800 is 0.33, the content of oxygen atoms is 0.62% by weight, the total content of other non-metallic heteroatoms (nitrogen atoms, phosphorus atoms and sulfur atoms) is 0.02% by weight except oxygen atoms, and the total content of metal atoms is 0.08% by weight.

[0107] The composition, specific surface area and w of the prepared heteroatom-containing carbon nanomaterials 500 / w 800 Listed in Table 1.

Embodiment 3

[0109] Adopt the same method as Example 1 to prepare heteroatom-containing nano-carbon materials, the difference is that in step (2), the aqueous dispersion obtained is placed in an autoclave with a polytetrafluoroethylene liner, at 110 °C under autogenous pressure for 24 hours.

[0110] The composition, specific surface area and w of the prepared heteroatom-containing carbon nanomaterials 500 / w 800 Listed in Table 1.

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Abstract

The invention discloses a nanometer carbon material containing heteroatoms and a preparation method and application thereof. The nanometer carbon material containing heteroatoms comprises, by weight, 6 to 12% of O and 88 to 94% of C. In an XPS pattern, a ratio of the amount of elemental O determined by peaks in a range of 531.0 to 532.5 eV to the amount of elemental O determined by peaks in a range of 532.6 to 533.5 eV is 0.3 to 1; and a ratio of the amount of elemental C determined by peaks in a range of 288.6 to 288.8 eV to the amount of elemental C determined by peaks in a range of 286.0 to 286.2 eV is 0.4 to 2. The invention also provides a dehydrogenation reaction method using the nanometer carbon material containing heteroatoms as a catalyst. The nanometer carbon material containing heteroatoms shows good catalytic activity in the dehydrogenation reaction of hydrocarbons, can obviously improve the conversion rate of raw materials, and realizes good olefin selectivity, especially high 1-butylene selectivity.

Description

technical field [0001] The present invention relates to a kind of heteroatom-containing nano-carbon material, and the present invention also relates to a preparation method of a heteroatom-containing nano-carbon material and the heteroatom-containing nano-carbon material prepared by the method. The heteroatom-containing nano-carbon material prepared by roasting the heteroatom-containing nano-carbon material. The present invention further relates to the application of the heteroatom-containing nano-carbon material as a catalyst for hydrocarbon dehydrogenation reaction and a method for hydrocarbon dehydrogenation reaction. Background technique [0002] Nano-carbon materials are an important class of inorganic non-metallic catalysts developed in recent years. They have shown superior performance to traditional metal catalysts in many fields such as hydrocarbon conversion, fine chemicals, fuel cells, and solar energy conversion. Widely concerned, has great potential for developm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24C07C5/48C07C11/08
CPCB01J27/20B01J27/24B82Y40/00C07C5/48C07C11/08C07C2527/20C07C2527/24C07C11/06C07C15/46C07C11/02C07C11/167Y02P20/52
Inventor 史春风荣峻峰于鹏谢婧新宗明生林伟国
Owner CHINA PETROLEUM & CHEM CORP
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