Heteroatom-containing nanocarbon material, preparation method and use thereof, and method for dehydrogenation reaction of hydrocarbons

A heteroatom-containing nano-carbon material, comprising:

• 92.2-97.8 wt % of carbon, 2-6 wt % oxygen, and 0.2-1.8 wt % nitrogen, wherein each of the weight percentages is of a weight of the corresponding element in a total weight of said heteroatom-containing nano-carbon material,
• wherein, in said heteroatom-containing nano-carbon material, the content of the oxygen element as determined with the peak(s) in the range of 531.0-532.5 eV in an X-ray photoelectron spectrum is IOc, the content of the oxygen element as determined with the peak(s) in the range of 532.6-533.5 eV in the X-ray photoelectron spectrum is IOe, and IOc/IOe is 0.2-0.8;
• the content of the carbon element as determined with the peak(s) in the range of 288.6-288.8 eV in the X-ray photoelectron spectrum is ICc, the content of the carbon element as determined with the peak(s) in the range of 286.0-286.2 eV in the X-ray photoelectron spectrum is ICe, and ICc/ICe is 0.2-1;
• and
• the total content of the nitrogen element as determined with the X-ray photoelectron spectroscopy is INt, the content of the nitrogen element as determined with the peak(s) in the range of 398.5-400.1 eV in the X-ray photoelectron spectrum is INc, and INc/INt is 0.7-1.