Method of preparing ordered structure mesopore carbon using asphalt vinyl matter as raw material
A technology of ordered structure and asphaltene is applied in the branch of inorganic non-metallic material science and technology—the field of carbon material science, which achieves the effects of low equipment requirements, expanded raw material sources, and simple and easy operation
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Embodiment 1
[0024] The mesoporous carbon with regular structure was prepared by template carbonization with asphaltene in coal liquefaction residue as carbon precursor and powdered SBA-15 as template. The specific steps are as follows: 1. Weigh 30 g of coal direct liquefaction residue, pulverize and pass through an 80-mesh sieve, and extract the residue powder with n-hexane at 92° C. for 50 hours. Extraction was carried out at 135 °C for 50 h, and the toluene solubles were evaporated under reduced pressure at 80 °C to remove the toluene solvent by a rotary evaporator, and the obtained solid was asphaltene. 2. Place 1 g of SBA-15 template in a vacuum drying oven at 80°C and vacuum dry to constant weight. 3. Put the above-mentioned dried 1g SBA-15 in the impregnator, add 41.62g asphaltene / toluene solution (the mass ratio of asphaltene and toluene is 1.62:40) under vacuum and normal temperature to form a liquid-solid mixture, stir the mixture for 24h, The mixture was then heated at 90°C, th...
Embodiment 2
[0026] Using asphaltene extracted from coal liquefaction residue as carbon precursor and powdered SBA-15 as template, mesoporous carbon with regular structure was prepared by template carbonization. The specific steps are as follows: 1. Weigh 50 g of coal liquefaction residue without any treatment, pulverize and pass through a 100-mesh sieve, the residue powder is subjected to Soxhlet extraction at 92° C. with n-hexane for 50 hours, and the insoluble matter obtained from the extraction is dried and ground into powder. After passing through an 80-mesh sieve and extracting with toluene at 130 °C for 50 h, the obtained toluene solubles were evaporated under reduced pressure at 90 °C with a rotary evaporator to remove the toluene solvent, and the solid obtained was asphaltene. 2. Place 1.5 g of SBA-15 template in a vacuum drying oven at 80°C and vacuum dry to constant weight. 3. The above-mentioned SBA-15 powder cooled to room temperature after drying is placed in the impregnator,...
Embodiment 3
[0028] The mesoporous carbon with regular structure was prepared by template carbonization with pre-asphaltene extracted from coal liquefaction residue as carbon precursor and powdered SBA-15 as template. The specific steps are as follows: 1. Weigh 60 g of coal liquefaction residue without any treatment, pulverize it, pass it through an 80-mesh sieve, extract the residue powder with n-hexane at 92 ° C for 50 h, and then dry the insoluble matter obtained from the extraction and grind it into powder. 80 mesh sieve, extracted with toluene at 135°C for 50h, the obtained toluene-insoluble matter was dried, ground into powder, passed through a 100-mesh sieve, and extracted with tetrahydrofuran at 92°C for 36h, the obtained tetrahydrofuran soluble matter was partially rotated by rotating Evaporator under reduced pressure at 50°C to remove the tetrahydrofuran solvent and the obtained solid is pre-asphaltene. 2. Place 1.2 g of SBA-15 template in a vacuum drying oven at 80°C and vacuum ...
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