Metal atom-containing nano carbon material as well as preparation method and application thereof and hydrocarbon dehydrogenation reaction method

A nano-carbon material and metal atom technology, applied in the fields of hydrocarbons, hydrocarbons, chemical instruments and methods, etc., can solve problems such as lack of consensus, achieve small structural impact, improve raw material conversion rate and product selectivity, The effect of good catalytic performance

Active Publication Date: 2017-07-07
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 the doping modification of carbon nanomaterials and their catalytic properties, there is still no consensus on some of the basic issues. conduct in-depth research

Method used

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  • Metal atom-containing nano carbon material as well as preparation method and application thereof and hydrocarbon dehydrogenation reaction method
  • Metal atom-containing nano carbon material as well as preparation method and application thereof and hydrocarbon dehydrogenation reaction method
  • Metal atom-containing nano carbon material as well as preparation method and application thereof and hydrocarbon dehydrogenation reaction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] (1) 20g of multi-walled carbon nanotubes (specific surface area is 136m 2 / g, the content of oxygen atoms is 0.3% by weight, the content of nitrogen atoms is 0.02% by weight, the total content of other non-metallic heteroatoms (phosphorus and sulfur) except nitrogen and oxygen is 0.01% by weight, and the total content of metal atoms is 0.1% by weight %, 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 8000.12, 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 140 kHz, and the time is 1 hour. Then, add NH 3 and ferric nitrate to obtain an aqueous dispersion, wherein, according to the raw material nano-carbon material: NH 3 : Ferric nitrate: H 2 The weight ratio of O is 1:1.6:1:17.4.

[0088] (2) ...

Embodiment 2

[0102] The same method as in Example 1 is used to prepare nano-carbon materials containing metal atoms. 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 content of nitrogen atoms is 0.01% by weight, the total content of other non-metallic heteroatoms (phosphorus atoms and sulfur atoms) except nitrogen atoms and oxygen atoms is 0.01% by weight, and the total amount of metal atoms The content is 0.08% by weight. The composition, specific surface area and w of the prepared metal atom-containing nanocarbon materials 500 / w 800 Listed in Table 1.

Embodiment 3

[0104] Adopt the same method as Example 1 to prepare nano-carbon materials containing metal atoms, the difference is that in step (2), the aqueous dispersion obtained is placed in an autoclave with a polytetrafluoroethylene liner, at 80 °C under autogenous pressure for 24 hours. The composition, specific surface area and w of the prepared metal atom-containing nanocarbon materials 500 / w 800 Listed in Table 1.

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Abstract

The invention discloses a metal atom-containing nano carbon material as well as a preparation method and application thereof. The metal atom-containing nano carbon material comprises the following components in percentage by weight: 1-8% of an element O, 1-10% of an element N and 1-10% of metal elements, wherein the content of the element O determined by a peak at 529.5-530.8eV in an XPS (X-Ray Photoelectron Energy Spectrum) is 0.02-0.3% by weight; the ratio of the amount of the element O determined by a peak at 531.0-532.5eV to the amount of the element O determined by a peak at 532.6-533.5eV is 0.2:0.8; the ratio of the amount of the element N determined by a peak at 398.5-400.1eV to the total amount of the element N determined by the XPS is 0.6:0.95; the ratio of the amount of the element N determined at a peak at 404.0-406.5eV to the total amount of the element N is 0.05:0.35. The invention further provides a hydrocarbon dehydrogenation reaction method with the metal atom-containing nano carbon material as a catalyst. By adopting the method, relatively high raw material conversion rate and product selectivity can be achieved.

Description

technical field [0001] The present invention relates to a nano-carbon material containing metal atoms. The present invention also relates to a method for preparing a nano-carbon material containing metal atoms and a nano-carbon material containing metal atoms prepared by the method. The present invention also relates to a nano-carbon material containing metal atoms. The metal atom-containing nano-carbon material prepared by roasting the metal atom-containing nano-carbon material. The present invention further relates to the application of the metal atom-containing nano-carbon material as a catalyst for hydrocarbon dehydrogenation reaction and a method for hydrocarbon dehydrogenation reaction. Background technique [0002] The dehydrogenation reaction of hydrocarbons is an important type of reaction. For example, most low-carbon alkenes are obtained through the dehydrogenation reaction of low-carbon alkanes. Dehydrogenation reactions can be divided into direct dehydrogenation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/24B01J35/10C07C5/333C07C5/48C07C11/08
CPCC07C5/3335C07C5/48B01J27/24C07C2527/24B01J35/613B01J35/615C07C11/08
Inventor 史春风荣峻峰于鹏
Owner CHINA PETROLEUM & CHEM CORP
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