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A nano-carbon material containing metal atoms, its preparation method and application, and a hydrocarbon dehydrogenation reaction method

A kind of nano carbon material, metal atom technology

Active Publication Date: 2019-04-16
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

[0089] (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 0.5 hours. Then, add NH 3 (provided in the form of a 36% by weight aqueous solution) and nickel acetate as a metal compound, thereby obtaining an aqueous dispersion, wherein, accordin...

Embodiment 2

[0103] 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 property parameters of the prepared metal atom-containing carbon nanomaterials are listed in Table 1.

Embodiment 3

[0105] 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 70 °C under autogenous pressure for 24 hours. The property parameters of the prepared metal atom-containing carbon nanomaterials are listed in Table 1.

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Abstract

The invention discloses a metal atom-containing nanocarbon material and its preparation method and application. The metal atom-containing nanocarbon material contains 2-15 wt% O element, 0.8-10 wt% N element, 1-10 wt% of metallic elements and 65-96.2% by weight of C element. In the X-ray photoelectron spectrum, the peak in the range of 529.5-530.8eV determines the content of the O element to be 0.02-0.2% by weight, and the content of the O element is determined by the peak in the range of 531.0-532.5eV. The ratio of the determined amount of O element to the amount of O element determined from the peak in the 532.6-533.5eV range is 0.2-1, and the ratio of the amount of N element determined from the peak in the 398.5-400.1eV range to the total amount of N element The ratio is 0.7-1. The invention also provides a hydrocarbon dehydrogenation reaction method using the metal atom-containing nanocarbon material as a catalyst. The metal atom-containing nanocarbon material shows good catalytic performance in the dehydrogenation reaction of hydrocarbon substances, and can significantly improve the 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): B01J27/24B01J21/18B01J35/10C07C5/333C07C5/48C07C11/08
CPCC07C5/3335C07C5/48B01J21/185B01J27/24C07C2527/24C07C2521/18B01J35/613B01J35/615C07C11/08
Inventor 史春风荣峻峰于鹏
Owner CHINA PETROLEUM & CHEM CORP