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Preparation method and application of mfi zeolite polymer
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A polymer and zeolite technology, which is applied in the preparation of liquid hydrocarbon mixtures, the production of hydrocarbons from oxygen-containing organic compounds, the addition of unsaturated hydrocarbons and saturated hydrocarbons, etc., to achieve simple process, low manufacturing cost and good catalytic performance Effect
Active Publication Date: 2019-06-25
苏州智烃新材料科技有限公司
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But these two methods can only be applied to the preparation of Y-type zeolite aggregates
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Embodiment 1
[0020] In parts by mass, mix 25.8 parts of water glass with 33.2 parts of deionized water, stir for 60 minutes, add 3.1 parts of aluminum sulfate, 4 parts of sulfuric acid and 33.2 parts of deionized water, stir for 60 minutes, and then add 0.7 parts of seed crystals , stirred for 2 hours, added 0.5 parts of sodium polyacrylate with a molecular weight of 6000 to 10000 at room temperature, sealed and stirred, heated up at a rate of 10°C / hour, raised to 170°C, stayed for 24 hours, then cooled, separated the product, and washed , The final product obtained after exchange and activation is coded as E-0.
Embodiment 2
[0022] In parts by mass, mix 25.8 parts of water glass with 33.2 parts of deionized water, stir for 60 minutes, add 3.1 parts of aluminum sulfate, 4 parts of sulfuric acid and 33.2 parts of deionized water, stir for 60 minutes, and then add 0.7 parts of seed crystals , stirred for 2 hours, and added 0.5 parts of molecular weight 1.6-2 million at room temperature of Sodium polyacrylate, sealed and stirred, heating up at a rate of 10°C / hour, heating up to 170°C, staying for 24 hours, then cooling down, separating the product, washing, exchanging and activating to obtain the final product, which is coded as E-1.
Embodiment 3～5
[0024] In parts by mass, mix 25.8 parts of water glass with 33.2 parts of deionized water, stir for 60 minutes, add 3.1 parts of aluminum sulfate, 4 parts of sulfuric acid and 33.2 parts of deionized water, stir for 60 minutes, and then add 0.7 parts of seed crystals , Stir for 2 hours, seal and stir, heat up, the heating rate is 10°C / hour, when the system temperature reaches 60°C, 120°C and 170°C, add 0.5 parts of molecular weight 1.6-2 million of Sodium polyacrylate, continue to heat up to 170°C, stay for 24 hours, then cool down, separate the product, wash, exchange and activate to obtain the final product, which are respectively coded as E-2, E-3 and E-4.
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Abstract
The invention relates to manufacture and an application of a chemical engineeringzeolite material, and in particular relates to a preparation method and an application of an MFI zeolitepolymer. The method comprises the following steps: adding a cation surfactant under a closed condition in a conventional nano ZSM-5 zeolite synthesis process in a process of heating from room temperature to 170 DEG C, and performing conventional washing and activation after crystallization, thus obtaining an MFI zeolite polymer final product. The method disclosed by the invention is simple in technology and low in manufacturing cost, and the catalysis performance of different chemical engineering reactions is high; and the obtained MFI zeolite polymer product can be effectively applied to a methyl alcohol preparing propylene process, a methyl alcohol preparing gasoline process, a gas-phase alkylation process and a toluenedisproportionation reaction process.
Description
technical field [0001] The invention relates to the manufacture and application of a chemical catalyst zeolite material, in particular to a preparation method and application of an MFI zeolite polymer. Background technique [0002] As a porous solid acid, zeolite is an indispensable catalytic material in the chemical industry and has been widely studied and applied. For heterogeneous reactions catalyzed by zeolite catalysts, in addition to reaction pressure, reaction temperature and reaction time, the diffusion performance of the catalyst and the concentration of active sites are also important factors that affect the reaction effect. [0003] For the adjustment of the diffusion performance of zeolite catalysts, two methods are generally adopted. One is to select different particle sizes according to the strength of specific chemical reactions limited by diffusion, in order to achieve the best catalyst effect, as described in Chinese patents CN101406846, CN101624192B and CN1...
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