Preparation method of graded-pore macroporous-microporous ZSM-5 molecular sieve and product of graded-pore macroporous-microporous ZSM-5 molecular sieve
The invention discloses a preparation method of a hierarchical-pore macroporous-microporous ZSM-5 molecular sieve, which comprises the following steps: (1) uniformly mixing tetrapropylammonium hydroxide, sodium metaaluminate, sodium hydroxide, deionized water and absolute ethyl alcohol to obtain a s...
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| creator | SHI HAOFENG ZHU SHAOLIN GUO CHUNMU LYU JIAMIN SU BAOLIAN YU SHEN LIU ZHAN CHEN LIHUA |
| description | The invention discloses a preparation method of a hierarchical-pore macroporous-microporous ZSM-5 molecular sieve, which comprises the following steps: (1) uniformly mixing tetrapropylammonium hydroxide, sodium metaaluminate, sodium hydroxide, deionized water and absolute ethyl alcohol to obtain a silicon source treatment solution; putting the silicon oxide microspheres serving as a silicon source into the silicon source treating fluid for ultrasonic dispersion, and then drying at 40-60 DEG C to obtain dry gel; and (2) carrying out steam-assisted crystallization on the dry gel to obtain a solid product, then roasting to obtain a sodium type graded-pore macroporous-microporous ZSM-5 molecular sieve, and carrying out ammonium exchange to convert the sodium type graded-pore macroporous-microporous ZSM-5 molecular sieve into a hydrogen type graded-pore macroporous-microporous ZSM-5 molecular sieve catalyst. According to the method, the silicon oxide microspheres which are low in cost and can be massively synthesi |
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| subjects | CHEMISTRY COMPOUNDS THEREOF INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS |
| title | Preparation method of graded-pore macroporous-microporous ZSM-5 molecular sieve and product of graded-pore macroporous-microporous ZSM-5 molecular sieve |
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