Molecular sieve with TON structure and preparation method thereof

A molecular sieve, OH- technology, applied in molecular sieve catalysts, molecular sieves and alkali exchange compounds, chemical instruments and methods, etc., can solve the problems of low product purity and yield, long crystallization time, etc.

Inactive Publication Date: 2005-01-19
温州新瑞泰树脂有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned methods for preparing molecular sieves with TON structure all use a single organic compound as a template, which generally has the problems of long crystallization time, low product purity and yield

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0091] In the process of preparing the TON structure molecular sieve provided by the present invention, other raw materials and operating conditions can be determined according to the prior art, such as various TON structure molecular sieves (ZSM-22, Theta-1, ISI-1, KZ-2 in the prior art) and NU-10) raw materials and operating conditions used in the preparation process. Generally, the said templating agent of step (a) is a double templating agent, which consists of two kinds of templating agents, wherein the main templating agent is a diamine compound, which can be C 2 -C 10 The diamine, preferably C 5 -C 8 diamine, more preferably hexamethylenediamine; the auxiliary templating agent is generally a nitrogen-containing heterocyclic compound, preferably a pyrrole derivative, more preferably pyrrolidine. The IV of the periodic table A Elemental compounds, can be selected from one or more of silicon or germanium compounds, preferably silicon compounds, can be all silicon-conta...

Embodiment 1～6

[0104] Take a certain amount of water and put it in a beaker, add silicon source, aluminum source and alkali in sequence, mix thoroughly, then add the main template agent and auxiliary template agent in turn, or mix the two organic substances and add them together, after fully mixing, move to high pressure The gel composition and crystallization conditions of each embodiment are shown in Table 7, and the XRD results of the products are shown in Tables 8, 9, 10, 11, 12, and 13.

[0105] Example number

1①

2②

3③

4④

5⑤

6⑥

al 2 o 3 / SiO 2

0.01

0.01

0.02

0.005

0.03

0.01

m + / SiO 2

0.2

0.2

0.6

0.3

0.1

0.4

Oh - / SiO 2

0.2

0.2

0.3

0.5

0.3

0.4

RN / SiO 2

0.3

0.3

0.6

0.4

0.2

0.5

h 2 O / SiO 2

80

45

120

90

...

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PUM

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Abstract

The invention relates to a molecular sieve with TON structure and preparation method thereof, wherein the molecular sieve synthesizing process employs diamine compound and nitrogen-containing heterocyclic compound as double mould agent, said TON type molecular sieve is prepared through full crystallization reaction.

Description

technical field [0001] The invention relates to a molecular sieve with TON structure and a preparation method thereof. Background technique [0002] Molecular sieve is a crystalline material with uniform orifice, regular channel shape and orientation. It includes natural and synthetic types. So far, hundreds of molecular sieves have been discovered and synthesized. Many of them have been used as adsorbents, catalysts, etc. Especially when used in catalytic materials, it shows excellent activity and selectivity, especially in hydrocarbon conversion reactions. The shape, size and channel direction of molecular sieves used as adsorbents and catalysts have a great influence on their properties, especially for type-selective reactions. Molecular sieves can be divided into small-pore molecular sieves with less than 8-membered rings, medium-pored molecular sieves with 10-membered rings and large-pored molecular sieves with 12-membered rings according to the pore size. The larger...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J29/70C01B39/46
Inventor 谢亮亮童广明谢庆华廖士纲刘全杰
Owner 温州新瑞泰树脂有限公司
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