Preparation method for loading metal oxide on surface of cracked carbon black
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A technology of surface loading and oxide, applied in chemical instruments and methods, dyeing physical treatment, fibrous fillers, etc. Effect
Inactive Publication Date: 2020-10-23
安徽省克林泰迩再生资源科技有限公司
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At the same time, during the pyrolysis process, the active points on the surface of the pyrolytic carbon black are deactivated at high temperature, and ash such as metal salts in the rubber is deposited on the surface of the pyrolytic carbon black. Reduced carbon black structure
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Embodiment 1
[0020] A preparation method for loading metal oxide on the surface of pyrolysis carbon black, comprising the following steps:
[0021] S1. After washing and drying the cracked carbon black with clean water, place it in a vacuum environment and dry it at 90°C for 1 hour;
[0022] S2, after cleaning and drying, place in the vacuum reaction tank, add alcoholsolvent simultaneously, vacuumize in the vacuum reaction tank, exhaust and release pressure again, through 3 times of vacuumizing-pressure release treatment, make alcoholsolvent Can enter the surface and internal pores of pyrolysis carbon black;
[0024] S3. Heating and aging: heat the vacuum reaction tank, raise the temperature to 50°C, keep for 2 hours, then sieve and drain, recover the alcohol solvent, collect and recycle the alcohol solvent through distillation, and crack the obtained carbon black drying;
[0025] S4, loaded meta...
Embodiment 2
[0028] A preparation method for loading metal oxide on the surface of pyrolysis carbon black, comprising the following steps:
[0029] S1. After washing and drying the cracked carbon black with clean water, place it in a vacuum environment and dry it at 90°C for 1 hour;
[0030] S2, after cleaning and drying, place in the vacuum reaction tank, add aromatic hydrocarbon solvent at the same time, vacuumize in the vacuum reaction tank, exhaust and release the pressure again, through 3 times of vacuuming-pressure relief treatment, so that the solvent can Enter the cracked carbon black surface and internal pores;
[0032] S3. Heating and aging: heating the vacuum reaction tank, raising the temperature to 60° C., keeping it for 2 hours, then sieving and draining, recovering the solvent, collecting and reusing the solvent through distillation, and drying the obtained cracked carbon bl...
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Abstract
The invention discloses a preparation method for loading a metaloxide on the surface of cracked carbon black. The method comprises the following steps: dissolving organic impurities such as coke oiland residual rubber hydrocarbon attached to the surfaces and internal spaces of carbon black particles by using an organic solvent; conducting repeated vacuum-pressure relief and curing treatment to help the organic solvent to permeate into the cracked carbon black particles so as to allow the organic impurities in the carbon black particles to be fully dissolved out, rich pore structures to be formed on the surfaces of the carbon black particles and in the carbon black particles and active sites of the carbon black particles to be released; carrying out ultrasonic dispersion treatment on thecarbon black particles so as to load metal ions in an aqueous solution into pores in the surfaces of the carbon black particles; and carrying out standing and calcining to uniformly deposit metal oxides in the pores in the surfaces of the carbon black particles, thereby obtaining the modified cracked carbon black hybrid particles and enhancing the application performance of the cracked carbon black.
Description
technical field [0001] The invention relates to the technical field of pyrolysis carbon black modification treatment, in particular to a preparation method for loading metal oxides on the surface of pyrolysis carbon black. Background technique [0002] The thermal cracking technology of waste tires is to crack the rubber polymer of waste tires into pyrolysis gas, pyrolysis oil and pyrolysis carbon black at a specific temperature under the condition of lack of oxygen or inert gas. The energy source of pyrolysis, the produced oil and carbon black are the main products of waste tire pyrolysis, and the recycled pyrolysis carbon black is the key product of tire pyrolysis. [0003] The properties of tire pyrolytic carbon black are different from ordinary commercial carbon black in many ways. Different types of carbon black are used for rubber in different parts of tires. In addition, various impurities and carbon will be deposited on the surface of pyrolytic carbon black during t...
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