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SCM-26 aluminophosphate and preparation method thereof

A technology of SCM-26 and aluminophosphate, which is applied in molecular sieves and alkali-exchanged phosphates, chemical instruments and methods, molecular sieve characteristics, aluminum phosphate, etc., can solve the problems of late research on the artificial synthesis of aluminum phosphate molecular sieves and no structure discovery

Active Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with zeolite molecular sieves, the artificial synthesis of aluminum phosphate molecular sieves is relatively late
In 1971, Flanigen et al. reported the synthesis of aluminum phosphate molecular sieves [Molecular Sieve Zeolites-I, ACS, Washington D.C]. Under hydrothermal synthesis conditions, mixed oxides of aluminum, silicon and phosphorus were obtained with analcime, chabazite, phillipsite -harmotome, L-type molecular sieve, A-type molecular sieve and B-type molecular sieve and other silicon-phosphorus-aluminum molecular sieves with the same crystal structure, wherein the content of phosphorus is 5-25% (as P2O5 ), but no structure different from zeolite molecular sieves was found

Method used

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  • SCM-26 aluminophosphate and preparation method thereof
  • SCM-26 aluminophosphate and preparation method thereof
  • SCM-26 aluminophosphate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh 9.2 grams of 16.31% N,N'-[1,4-phenylenebis(methylene)]bis(1,4-diazacyclo[2,2,2]octane) Ammonium hydroxide (hereinafter abbreviated as R) solution, then while stirring, add 0.43 gram of aluminum isopropoxide and 0.14 gram of zinc acetate, then slowly add 1.15 gram of concentration of phosphoric acid solution of 85%, after stirring Can obtain the synthetic mother liquor that has following molar ratio composition:

[0031] 0.40ZnO:1.0Al 2 o3 :2.4P 2 o 5 :2.0R:190H 2 o

[0032] The above-mentioned synthetic mother liquor is placed in a closed reaction container for crystallization, the crystallization temperature is 145°C, and the crystallization time is 120 hours. After the crystallized product is washed and dried, aluminophosphate is obtained, which has the following properties: figure 1 As shown in the XRD pattern, the skeleton composition of the obtained aluminophosphate is Zn 0.09 al 0.42 P 0.49 o 2 .

Embodiment 2

[0034] Weigh 11.5 grams of 16.31% N,N'-[1,4-phenylene bis(methylene)]bis(1,4-diazacyclo[2,2,2]octane) Ammonium hydroxide solution, then while stirring, add 0.43 gram of aluminum isopropoxide and 0.14 gram of zinc acetate therein, then slowly add 1.15 gram of concentration dropwise and be the phosphoric acid solution of 85%, can obtain having following after stirring evenly Synthetic mother liquor composed of molar ratio:

[0035] 0.40ZnO:1.0Al 2 o 3 :2.4P 2 o 5 :2.5R:240H 2 o

[0036] Put the above synthetic mother liquor in a closed reaction container for crystallization, the crystallization temperature is 145°C, and the crystallization time is 120 hours. After the crystallized product is washed and dried, aluminophosphate is obtained, and the skeleton of the obtained aluminophosphate Composed of Zn 0.10 al 0.42 P 0.48 o 2 .

Embodiment 3

[0038] Weigh 6.9 grams of 16.31% N,N'-[1,4-phenylenebis(methylene)]bis(1,4-diazacyclo[2,2,2]octane) Ammonium hydroxide solution, then while stirring, add 0.43 gram of aluminum isopropoxide and 0.14 gram of zinc acetate therein, then slowly add 1.15 gram of concentration dropwise and be the phosphoric acid solution of 85%, can obtain having following after stirring evenly Synthetic mother liquor composed of molar ratio:

[0039] 0.40ZnO:1.0Al 2 o 3 :2.4P 2 o 5 :1.5R:142H 2 o

[0040] Put the above synthetic mother liquor in a closed reaction container for crystallization, the crystallization temperature is 145°C, and the crystallization time is 120 hours. After the crystallized product is washed and dried, aluminophosphate is obtained, and the skeleton of the obtained aluminophosphate Composed of Zn 0.06 al 0.42 P 0.42 o 2 .

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Abstract

The invention relates to a novel SCM-26 aluminophosphate and a preparation method thereof. The skeleton of the aluminophosphate has the following composition in molar ratio: (M<x>Al<y>P<z>)O<2>, wherein M is one of zinc, cobalt and magnesium, x is greater than or equal to 0.05 and less than or equal to 0.5, z is greater than or equal to 0.4 and less than or equal to 0.6, and x + y + z = 1. The aluminophosphate has a unique X-ray diffraction pattern, can be used as an adsorbent, and can also be used as a catalyst or a carrier of the catalyst.

Description

technical field [0001] The invention relates to an aluminophosphate and a preparation method thereof. Background technique [0002] Most of the aluminophosphates belong to one of the large family of molecular sieves. Molecular sieves are a kind of porous crystalline materials. There are more than 230 types of molecular sieves with known structures, and molecular sieves with new structures are constantly emerging. Most molecular sieves have a large internal specific surface area and an open internal space, which can be used as a place for the reaction to occur, and can also be used to accommodate some guest molecules, such as metals, metal oxides, organic molecules, water molecules, and so on. Since molecular sieves have uniform and regular pores, and the size of the pores is of the same order as that of molecules, it is possible to "select" the entry and exit of molecules, thereby obtaining a shape-selective effect. Because molecular sieves have the above characteristics, ...

Claims

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Application Information

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IPC IPC(8): C01B37/06C01B39/54
CPCC01B37/065C01B39/54C01P2002/72
Inventor 袁志庆滕加伟付文华王振东乔健
Owner CHINA PETROLEUM & CHEM CORP
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