A kind of preparation method of high-boiling aromatic hydrocarbon solvent based on nanometer catalyst
A high-boiling-point aromatic hydrocarbon and nano-catalyst technology, applied in the field of aromatic hydrocarbon materials, can solve problems such as difficult to fully utilize and complex components
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Embodiment 1
[0026] (1) According to the molar ratio of tetrapropylammonium hydroxide, ethyl tetrasilicate, ferric citrate and distilled water is 0.15:0.4:0.3:80, add tetrapropylammonium hydroxide to distilled water, add tetrasilicate Ethyl ester and ferric citrate are mixed uniformly at room temperature to obtain a mixed solution. Transfer the mixed solution to a reaction kettle lined with polytetrafluoroethylene, raise the temperature to 80°C at a rate of 10°C / min, and keep it warm for 30 minutes. , and then heated at a rate of 1°C / min to 120°C for pre-crystallization treatment for 20 hours, then taken out, cooled to room temperature, centrifugally washed until neutral, and dried to obtain a pretreated intermediate.
[0027] (2) Place the pretreated intermediate in a tube furnace, in an environment containing 60% ammonia, raise the temperature to 500°C at a rate of 5°C / min, and heat it at a rate of 5°C / min after holding for 2 hours Calcining at 550° C. for 4 hours at a high temperature t...
Embodiment 2
[0031] (1) According to the molar ratio of tetrapropylammonium hydroxide, ethyl tetrasilicate, ferric citrate and distilled water is 0.25:0.5:0.4:100, add tetrapropylammonium hydroxide to distilled water, add tetrasilicate Ethyl ester and ferric citrate were mixed uniformly at room temperature to obtain a mixed solution. Transfer the mixed solution to a reaction kettle lined with polytetrafluoroethylene, raise the temperature to 80°C at a rate of 10°C / min, and keep it warm for 60 minutes. , and then heated at a rate of 5°C / min to 180°C for pre-crystallization treatment for 24 hours, then taken out, cooled to room temperature, centrifugally washed until neutral, and dried to obtain a pretreated intermediate.
[0032] (2) Place the pretreated intermediate in a tube furnace, in an environment containing 100% ammonia, raise the temperature to 500°C at a rate of 5°C / min, and heat it up at a rate of 5°C / min after 4 hours of heat preservation Calcining at 1000° C. for 10 hours at a h...
Embodiment 3
[0036] (1) According to the molar ratio of tetrapropylammonium hydroxide, ethyl tetrasilicate, ferric citrate and distilled water is 0.2:0.45:0.35:90, add tetrapropylammonium hydroxide to distilled water, add tetrasilicate Ethyl ester and ferric citrate were mixed uniformly at room temperature to obtain a mixed solution. Transfer the mixed solution to a reaction kettle lined with polytetrafluoroethylene, raise the temperature to 80°C at a rate of 10°C / min, and keep it warm for 45 minutes. , and then heated at a speed of 2°C / min to 150°C for pre-crystallization treatment for 22 hours, then taken out, cooled to room temperature, centrifugally washed until neutral, and dried to obtain a pretreated intermediate.
[0037] (2) Put the pretreated intermediate in a tube furnace, in an environment containing 80% ammonia, raise the temperature to 500°C at a rate of 5°C / min, and heat it at a rate of 5°C / min after 3 hours of heat preservation Calcining at 900° C. for 6 hours at a high tem...
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