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A nano-carbon material containing metal atoms, its preparation method and application, and a 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: 2019-08-16
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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  • A nano-carbon material containing metal atoms, its preparation method and application, and a hydrocarbon dehydrogenation reaction method
  • A nano-carbon material containing metal atoms, its preparation method and application, and a hydrocarbon dehydrogenation reaction method
  • A nano-carbon material containing metal atoms, its preparation method and application, and a hydrocarbon dehydrogenation reaction method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0101] (1) 20g of multi-walled carbon nanotubes (specific surface area is 136m 2 / g, the content of oxygen atom is 0.3% by weight, the content of nitrogen atom is 0.02% by weight, the total content of other non-metallic heteroatoms (phosphorus atom and sulfur atom) except nitrogen atom and oxygen atom is 0.01% by weight, and the total content of metal atom The content is 0.1% by weight, and the weight loss rate in the temperature range of 400-800°C is w 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 140 kHz, and the time is 1 hour. Then, add tetraethylammonium hydroxide as an organic base and ferrous acetate as a metal compound to obtain an aqueous dispersion, wherein, according to the raw material nano-c...

Embodiment 2

[0117] 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

[0119] The same method as in Example 1 was used to prepare the metal-atom-containing nano-carbon material, except that in step (2), the obtained aqueous dispersion was placed in a high-pressure reactor with a polytetrafluoroethylene liner at 90° C. Under the temperature of , react under autogenous pressure for 36 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 nanocarbon material containing metal atoms and its preparation method and application. The nanocarbon material contains 1-15% by weight of O element, 0.2-2% by weight of N element and 0.2-15% by weight of metal elements. The ratio of the content of O element determined by the peak at 529.5-530.8eV in XPS to the total amount of O element determined by XPS is 0.02-0.2 The ratio of the amount of O element determined by the peak at 533.5 eV is 0.4-2.5, and the ratio of the amount of N element determined by the peak at 398.5-400.1 eV to the total amount of N element determined by XPS is 0.5-1. The invention also provides a hydrocarbon dehydrogenation reaction method using the metal atom-containing nanocarbon material as a catalyst, which can obtain higher raw material conversion rate and product selectivity.

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 Patents(China)
IPC IPC(8): B01J27/24C07C5/333C07C5/48C07C11/08B01J35/10B01J21/18
CPCC07C5/3335C07C5/48B01J21/185B01J27/24C07C2527/24C07C2521/18B01J35/615C07C11/08
Inventor 史春风荣峻峰于鹏
Owner CHINA PETROLEUM & CHEM CORP
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