HZSM-5 molecular sieve as well as preparation method and application thereof

A technology of molecular sieve and crystallization reaction, which is applied in the direction of crystalline aluminosilicate zeolite, borocarbane silicone crystalline aluminosilicate zeolite, etc., can solve the problems of high cost and complicated synthesis route, and achieve reduction of synthesis cost and simplification of synthesis The effect of technology and broad application prospects

Pending Publication Date: 2021-03-09
3 Cites 0 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a kind of HZSM-5 molecular sieve and its preparation method and applica...
View more

Method used

According to the present invention, described alkali source is selected from urea and/or ammoniacal liquor, preferred mass content is not less than 99% urea; Adopt urea and/or ammoniacal liquor as alkali source, can avoid introducing sodium in HZSM-5 molecular sieve Ions, therefore, no ion exchange is required in the process of preparing the HZSM-5 molecular sieve, avoiding waste water and additional energy consumption generated in the process.
The inventor of the present invention is by the synthetic method of HZSM-5 molecular sieve and finds, by adopting ...
View more


The invention relates to an HZSM5 molecular sieve as well as a preparation method and application thereof. The method comprises the following steps of: (1) mixing water, a silicon source and an alkalisource to obtain a solution A, mixing ethanol, seed crystals and an aluminum source to obtain a solution B; and (2) uniformly mixing the solution B and the solution A, and then carrying out crystallization reaction. The silicon source is metered on the basis of silicon dioxide, and the molar ratio of the ethanol to the silicon source is 0.5-2.5: 1. According to the HZSM-5 molecular sieve as wellas the preparation method and application thereof, the HZSM-5 molecular sieve with high crystallinity is obtained through a one-step crystallization method by adopting the ethanol as a template agentand controlling the use amounts of the ethanol and the silicon source within a specific range, so that the synthesis process of the HZSM-5 molecular sieve is simplified, the synthesis cost is reduced,no waste liquid is generated, and the method is environmentally friendly and has a wide application prospect.

Application Domain

Pentasil aluminosilicate zeolite

Technology Topic

Molecular sieveSeed crystal +7


  • HZSM-5 molecular sieve as well as preparation method and application thereof
  • HZSM-5 molecular sieve as well as preparation method and application thereof
  • HZSM-5 molecular sieve as well as preparation method and application thereof


  • Experimental program(4)
  • Comparison scheme(1)

Example Embodiment

[0046] Example 1
[0047] 17.55 g of silica sol, 0.3509 g of urea were added to 73.27 g of deionized water, and then stirred at 200R / min stirring at a stirring rate of 0.5 h, resulting in a solution;
[0048] 0.3575 g of a seed, 0.9751 g of aluminum aluminum was added 8.071 g of ethanol, and then stirred at 200R / min stirring at a stirring rate of 0.5 h, resulting in a B solution;
[0049] Under the conditions of the stirring rate of 300 r / min, the B solution was slowly added to the a solution, and after the dropping is completed, stirring was continued for 1 h to give a homogeneous gel;
[0050] The gel was transferred to a stainless steel crystalline crystalline with a polytetrafluoroethylene liner, 25 h at 160 ° C, then cooled to room temperature, washed and washed to neutral, and then dried at 80 ° C for 12 h, resulting in Hzsm- 5 molecular sieve.
[0051] The molar ratio of each material in this embodiment is shown in Table 1, and the obtained HzSM-5 molecular sieve is figure 1 Indicated.

Example Embodiment

[0052] Example 2-9
[0053] According to the method of Example 1, the material of each raw material is shown in Table 1.

Example Embodiment

[0054] Example 10
[0055] According to the method of Example 1, the crystallization temperature is 150 ° C, the crystallization time is 24 h.


no PUM

Description & Claims & Application Information

We can also present the details of the Description, Claims and Application information to help users get a comprehensive understanding of the technical details of the patent, such as background art, summary of invention, brief description of drawings, description of embodiments, and other original content. On the other hand, users can also determine the specific scope of protection of the technology through the list of claims; as well as understand the changes in the life cycle of the technology with the presentation of the patent timeline. Login to view more.

Similar technology patents

Structure of multi-sphere carbon-coated manganese dioxide composite material and preparation method thereof

ActiveCN110148716AThe synthesis process is simpleLow requirements for equipment parameters

Classification and recommendation of technical efficacy words

  • lower synthesis cost
  • The synthesis process is simple

Method for preparing mesoporous molecular sieve

InactiveCN103172080Alower synthesis costavoid toxic

Hydrogel applicable to cell adhesion and preparation method of hydrogel

InactiveCN105363070Alower synthesis costSynthesis conditions are easy to control

Recycling method for SAPO-34 molecular-sieve synthesized mother liquid

ActiveCN105668587Alower synthesis costReduce environmental damage

Preparation method for intermediate base-cycloalkyl crude oil emulsion de-emulsifier and product thereof

ActiveCN102786982AThe synthesis process is simplemild operating conditions
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products