Process of preparing FER zeolite inside surfactant system

A surfactant and zeolite technology, applied in the direction of crystalline aluminosilicate zeolite, iron conglomerate crystalline aluminosilicate zeolite, etc., can solve the problem of high price of surfactants, shorten the reaction time, and change the grain shape. , The effect of improving the crystallinity of the product

Inactive Publication Date: 2006-09-20
FUDAN UNIV
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  • Abstract
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  • Claims
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Problems solved by technology

Kulkarni and collaborators ([1] Ahedi, R.K.; Kotasthane, A.N.; Rao, B.S.; Manna, A.; Kulkarni, B.D.J. Colloid Interf. Sci. 2001, 236(1), 47; [2] Khomane, R.B.; Kulkarni, B.D.; Ahedi, R.K.J.Colloid Interf.Sci.2001, 236(2), 208) synthesized FER zeolite with higher crystallinity in pyrrolidine / ionic surfactant and pyrrolidine / nonionic surfactant systems respectively, But the price of the surfactant it chooses is relatively high

Method used

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  • Process of preparing FER zeolite inside surfactant system
  • Process of preparing FER zeolite inside surfactant system
  • Process of preparing FER zeolite inside surfactant system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 11, the FER zeolite synthesized in Example 1 was measured by low-temperature nitrogen adsorption method, and its Langmuir specific surface area was 418.2m 2 / g, the micropore volume is 0.13cm 3 / g.

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Abstract

The present invention is preparation process of FER zeolite inside mixed reactant colloid system containing surfactant. FER zeolite is obtained through hydrothermal reaction inside the reactant system comprising alkali metal source, oxide source of trivalent element, oxide source of four-valent element, water, structural guide agent and small amount of surfactant. The present invention adopts non-ionic surfactant glycerin or OP emulsifier. The small amount of surfactant added into the reactant system can inhibit the creation of hetero crystal phase, raise the crystallization degree of the synthetic product, alter the appearance of crystal grain, reduce the consumption of template agent, shorten reaction time, lower reaction temperature and make the reactant system suitable for industrial production of FER zeolite.

Description

technical field [0001] The invention belongs to the technical field of material synthesis, and in particular relates to a method for preparing FER zeolite in a colloidal system of a reaction mixture containing nonionic surfactant glycerin or OP emulsifier. Background technique [0002] Zeolite molecular sieve is a kind of inorganic aluminosilicate crystal. Its skeleton contains regular and orderly arranged pores or cages of molecular size (pore size 0.30-1.50nm), which has the functions of shape-selective catalysis, ion exchange and molecular sieving. It is widely used in crude oil processing and refining, petroleum catalytic cracking and petrochemical industries. [0003] FER (ZSM-35, ferrierite) is a zeolite with a mesopore structure, which contains ten-membered ring channels (0.42×0.54nm, along the [001] direction) and crossed eight-membered ring channels (0.35×0.48nm, along the [001] direction). [010] direction), the six-membered ring channel parallel to the ten-membere...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B39/44
Inventor 程晓维龙英才
Owner FUDAN UNIV
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