▎ 摘　　要

NOVELTY - A nitrogen doped graphene/silicon carbide microsphere nanocomposite material comprises silicon carbide and nitrogen doped graphene standing and growing on silicon carbide microsphere surface. USE - Nitrogen doped graphene/silicon carbide microsphere nanocomposite material for selective organic catalytic reaction (claimed). ADVANTAGE - The material has firm microsphere surface, no agglomeration, good wettability, corrosion resistance, high catalytic activity and efficiency in selective catalytic reaction, and multiple circulation. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: (1) preparation of nitrogen doped graphene/silicon carbide microsphere nanocomposite material which involves (1) growing liquid polysilane on graphite or silicon chip as substrate at high temperature under inert gas atmosphere to obtain graphene-silicon carbide microsphere, (2) activating with strong oxidizing acid, reducing with formaldehyde-hydrazine hydrate, heat preserving at high temperature under inert gas atmosphere; (2) preparation of nitrogen doped graphene/silicon carbide microsphere nanocomposite material which involves growing liquid halogenated polysilane mixture comprising liquid nitrogen-containing hydrocarbon mixture on graphite or silicon chip as substrate, and pyrolyzing at high temperature under inert atmosphere; and (3) application of nitrogen doped graphene/silicon carbide microsphere nanocomposite material for catalytic reaction which involves adding nanocomposite material to ferric chloride and ferrous chloride mixed solution and ammonia water, ultrasonic dispersing, magnetic separating to obtain magnetized nanocomposite material, adding deionized water, tert.-butyl hydroperoxide, and reducing agent to magnetized nanocomposite material, and sealing to complete selective catalytic oxidation. DESCRIPTION OF DRAWING(S) - The drawing shows a scanning electron microscopic image of nitrogen doped graphene/silicon carbide microsphere nanocomposite material at 60000 magnification.