AEI/CHA eutectic molecular sieve containing triethylamine and synthetic method thereof

A technology of molecular sieve and triethylamine, applied in the field of molecular sieve

Inactive Publication Date: 2009-06-10
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the research on SAPO and MeSAPO molecular sieves with AEI / CHA co-crystal structure containing triethylamine and their synthetic methods has not been reported yet.

Method used

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  • AEI/CHA eutectic molecular sieve containing triethylamine and synthetic method thereof
  • AEI/CHA eutectic molecular sieve containing triethylamine and synthetic method thereof

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preparation example Construction

[0046] In the preparation method of the molecular sieve provided by the present invention, the phosphorus source used can be one or a mixture of orthophosphoric acid, phosphate, organic phosphide or phosphorus oxide, wherein the preferred phosphorus source is orthophosphoric acid; It is one or any mixture of aluminum salt, aluminate, activated alumina, alkoxy aluminum, pseudo-boehmite or pseudo-boehmite; the silicon source is silica sol, water glass, activated dioxide One or any mixture of silicon or orthosilicates; the metal heteroatoms (Me) used are from titanium, vanadium, chromium, manganese, iron, cobalt, nickel, copper, zinc, zirconium, molybdenum, magnesium, One or any mixture of calcium, strontium, barium and lanthanum.

[0047] Described synthetic method comprises the following steps:

[0048] a) The silicon source material, the aluminum source material, the phosphorus source material, the metal compound, the template agent and the water are uniformly mixed in propor...

Embodiment 1

[0059] 11.2 g of pseudo-boehmite (containing Al 2 O 3 72.6wt%, Fushun Petroleum No.3 Catalyst Factory) powder was dissolved in 66ml deionized water, and 18.4g phosphoric acid (containing H 3 PO 4 85wt%, Reagent Factory of Liaoning Pharmaceutical Economic and Trade Corporation) and 5.1g of silica sol (containing SiO 2 28.1wt%, Shanghai Reagent Second Factory). Finally, 24.5 g of triethylamine (analytical grade, Shenyang Xinxi Reagent Factory) was added, and after stirring and mixing evenly, the mixture was transferred into a stainless steel synthesis kettle and sealed. Crystallize at 200 °C and autogenous pressure for 48 hours. The solid product is washed with deionized water until neutral, and dried in air at 100 °C to obtain sample A. The XRD analysis is as follows: figure 1 A shown. The XRD patterns of the obtained samples were compared with those of the simulated standard AEI / CHA eutectic molecular sieves (see "Collection of Simulated XRD Powder Patterns for Zeolite...

Embodiment 2

[0061] 11.2 g of pseudo-boehmite (containing Al 2 O 3 72.6wt%, Fushun Petroleum No.3 Catalyst Factory) powder was dissolved in 60ml deionized water, and 18.4g phosphoric acid (containing H 3 PO 4 85wt%, Reagent Factory of Liaoning Pharmaceutical Economic and Trade Corporation) and 8.5g silica sol (containing SiO 2 28.1wt%, Shanghai Reagent Second Factory). Finally, 22.5g triethylamine (analytical grade, Shenyang Xinxi Reagent Factory) and 10g tetraethylammonium hydroxide (10wt%, Beijing Xingfu Institute of Fine Chemistry) were added, and after stirring and mixing evenly, the mixture was transferred into stainless steel for synthesis Sealed in kettle. Crystallize at 200°C and autogenous pressure for 24 hours. The solid product is washed with deionized water until neutral, and dried in air at 100°C to obtain sample B. The XRD analysis is as follows: figure 1 shown in B. The XRD pattern of the obtained sample was compared with that of the simulated standard AEI / CHA co-cr...

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Abstract

The invention discloses an AEI/CHA eutectic molecule sieve containing triethylamine. An anhydrous chemical composition of the AEI/CHA eutectic molecule sieve is expressed as mR.(Six.Aly.Pz)O2, wherein x, y and z are molar fractions of Si, Al and P respectively; the x is between 0.001 and 0.98; the y is between 0.01 and 0.6; the z is between 0.01 and 0.6, x+y+z is equal to 1; the R is a template agent, and the m is a mole number of the R; and the value of the m is between 0.02 and 0.6. A preparation method for the AEI/CHA eutectic molecule sieve comprises the following steps: a) according to the mol ratio of oxides of various components, stirring and mixing evenly a silicon source, an aluminum resource, a phosphorus source, the template agent, and water are to obtain an initial gel mixture; and b) transferring the initial gel mixture into a stainless steel synthesis kettle to be sealed, then heating the kettle to a crystallization temperature of between 160 and 250 DEG C, and performing crystallization at constant temperature for 1 to 120 hours under the self-generated pressure, and separating a solid product, washing the solid product to be neutral, and drying the solid product to obtain the AEI/CHA eutectic molecule sieve. The molecule sieve can be used as a catalyst for an acid catalytic reaction after the template agent is removed through the baking.

Description

technical field [0001] The present invention relates to a molecular sieve with AEI / CHA co-crystal structure containing triethylamine. [0002] The present invention also relates to the preparation method of the above molecular sieve. [0003] The present invention also relates to the application of the above molecular sieve in acid catalysis reaction. Background technique [0004] SAPO molecular sieve is a silicoaluminophosphate series SAPO molecular sieve (US 4440871) developed by United Carbide Corporation (UCC). The molecular sieve is a kind of crystalline silicoaluminophosphate whose three-dimensional framework is composed of PO 2 + , AlO 2 - and SiO 2 Tetrahedral composition. Its anhydrous chemical composition can be expressed as mR·(Si x ·Al y ·P z )O 2 , where x, y, z are the mole fractions of Si, Al, and P, R is the template agent existing in the micropores of the molecular sieve crystal, and m is the mole number of the template agent R. MeSAPO molecular ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/54C01B37/08
Inventor 李金哲刘中民田鹏齐越许磊刘广宇
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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