35 results about "Ferric chloride hydrate" patented technology

The invention relates to a method for preparing a flexible conductive composite material by regulating the arrangement of graphene by a magnetic field, and belongs to the technical field of development of the flexible conductive composite material. Prepare graphene oxide, ferrous chloride tetrahydrate, and ferric chloride hexahydrate aqueous solutions respectively, then blend and stir mechanically, add ammonia water dropwise to adjust the pH value, mechanically stir in a water bath, and centrifuge the mixed solution after cooling to separate the precipitated substances in the lower layer out, and dry to prepare magnetic graphene powder; ultrasonically disperse magnetic graphene powder and polymer in N,N-dimethylformamide, respectively, and then blend them evenly, add 3,3'-dichloro After ‑4,4'‑diaminodiphenylmethane, continue mechanical stirring, pour the mixture into a petri dish coated with a release agent, put it in a uniform magnetic field generated by a strong neodymium-iron-boron magnet, and then dry it in a vacuum A magnetic graphene / polymer flexible conductive composite was obtained. The invention has simple operation, simple and easy-to-obtain raw materials, and low preparation condition requirements.

The invention provides a petroleum asphalt / ferric oxide composite wave absorbing agent, a preparation method thereof, and a wave absorbing material, which belong to the technical field of electromagnetic wave absorbing materials. In the present invention, after the petroleum asphalt and sodium chloride are pyrolyzed, the pyrolyzed asphalt obtained is a hydrocarbon rich in polycyclic aromatic hydrocarbons and has a porous nanosheet structure, which is conducive to improving the conductivity of the petroleum asphalt, and then combined with six Ferric chloride hydrate undergoes solvothermal reaction, and iron ferric oxide nanoparticles are formed during the solvothermal reaction process, which can effectively and stably modify petroleum asphalt. The conductive loop further enhances the magnetic loss performance of the composite material itself.

The invention discloses a Fe@SiO 2 The preparation method of catalyst comprises the steps of: mixing 2-aminoterephthalic acid, ferric chloride hexahydrate and N,N-dimethylformamide according to a certain mass ratio to obtain the first mixed liquid; solution at 140-160°C, heat preservation to obtain a dark brown mixture; add N,N-dimethylformamide to the dark brown mixture, stir and wash, centrifugal filter, and vacuum dry to obtain the first solid object; the above first solid Object, sodium hydroxide solution, cetyltrimethylammonium bromide, tetraethyl orthosilicate, methanol and water are (10‑40): (6‑10): (2‑8): ( 0.4-1.6): (2-8): (150-250) mix uniformly to obtain the second mixed solution; add ethanol to the second mixed solution, stir and wash, centrifuge and vacuum dry to obtain the second solid object; Two solid objects were fired at a high temperature of 700-900°C for 1-5h, passed through an inert gas, and stood in a sodium hydroxide solution for 12-24h to obtain Fe@SiO 2 catalyst.

The invention provides a Co 2 Preparation method of P / NPC electrocatalyst. Methyl orange was added to ultrapure water, and ferric chloride hexahydrate (FeCl 3 ·6H 2 O), followed by addition of pyrrole (C 4 h 5 N) and hexachlorotripolyphosphazene (NPCl 2 ) 3 , continuously stirred for 24 hours in the dark, filtered, washed and dried to obtain the precursor polypyrrole. Polypyrrole was placed in a solution containing cobalt nitrate hexahydrate (Co(NO 3 ) 2 ·6H 2 O) ultrapure water ultrasonication, static; then after centrifugation, drying, the obtained sample was placed in dimethylimidazole (C 4 h 6 N 2 ) in ultrapure water, centrifuged, washed and dried. Then the sample was calcined in a tube furnace at high temperature in an inert atmosphere to obtain a Co 2 P / NPC electrocatalyst, which has excellent electrocatalytic activity for oxygen reduction / evolution at the same time.

The invention discloses a zinc ferrite hollow sphere with a micro-nano structure and a preparation method thereof. The hollow sphere is composed of zinc ferrite hollow spheres with a diameter of 1.5-3μm. Among them, the diameter of the zinc ferrite hollow sphere is 180-220nm, the thickness of the ball wall is 28-32nm, and the ball wall is composed of zinc ferrite nanoparticles; The method is to first prepare urea aqueous solution, trisodium citrate dihydrate aqueous solution, ferric chloride hexahydrate aqueous solution and zinc nitrate aqueous solution respectively, and then mix the urea aqueous solution and trisodium citrate dihydrate aqueous solution evenly, and successively mix ferric chloride hexahydrate The aqueous solution and the zinc nitrate aqueous solution are added to the obtained mixed solution and mixed evenly. After that, the obtained precursor solution is placed at 120-180°C for closed reaction, and then the obtained reaction solution is sequentially subjected to solid-liquid separation, washing and drying. target product. Its uniform size and large specific surface area make it extremely easy to be widely commercialized in the fields of photoconductive materials, water treatment, surface-enhanced Raman scattering and sensors.