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Sulfate radical/zirconium oxide@SAPO-11 composite material, hydrocarbon isomerization catalyst and application

A SAPO-11, composite material technology, used in carbon compound catalysts, physical/chemical process catalysts, catalysts, etc., can solve the problems of low acid strength and B acid content.

Active Publication Date: 2020-10-23
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In summary, at present, increasing the acidity and B acid content of the hydrocarbon isomerization catalyst support can effectively improve the performance of hydrocarbon isomerization reaction, but compared with the conventional SAPO-11, the acid strength and B acid content of the above report are improved. low range

Method used

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  • Sulfate radical/zirconium oxide@SAPO-11 composite material, hydrocarbon isomerization catalyst and application
  • Sulfate radical/zirconium oxide@SAPO-11 composite material, hydrocarbon isomerization catalyst and application
  • Sulfate radical/zirconium oxide@SAPO-11 composite material, hydrocarbon isomerization catalyst and application

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Embodiment 1

[0065] This embodiment provides a SO-based 4 2- / ZrO 2 Hydrocarbon isomerization catalyst of @SAPO-11 composite material, which is prepared by the following steps:

[0066] Dissolve 12.2g of phosphoric acid in 40.0g of deionized water and stir at 35°C for 0.5h to obtain solution A;

[0067] Add 8.4g of pseudo-boehmite, 4.7g of tetraethyl orthosilicate and 6.8g of di-n-propylamine to the above solution A in sequence, and vigorously stir at 35°C for 6h to obtain gel B;

[0068] Transfer the above gel B to a 100mL stainless steel reaction kettle, raise the temperature to 200°C, and crystallize at a constant temperature for 24 hours;

[0069] Cool the stainless steel reaction kettle to 30°C, wash the obtained product, dry at 120°C for 12 hours, and roast at 600°C for 6 hours to obtain SAPO-11 powder;

[0070] Add 1.9g of terephthalic acid, 2.3g of anhydrous zirconium chloride and 2.0g of SAPO-11 powder to 44.0g of N,N-dimethylformamide in sequence, and stir at 35°C for 2h to o...

Embodiment 2

[0078] This embodiment provides a SO-based 4 2- / ZrO 2 Hydrocarbon isomerization catalyst of @SAPO-11 composite material, which is prepared by the following steps:

[0079] Dissolve 12.2g of phosphoric acid in 40.0g of deionized water and stir at 35°C for 0.5h to obtain solution A;

[0080] Slowly add 8.4g of pseudo-boehmite, 4.7g of tetraethyl orthosilicate and 6.8g of di-n-propylamine into the above solution A, and vigorously stir at 35°C for 6h to obtain gel B;

[0081] Transfer the above gel B to a 100mL stainless steel reaction kettle, raise the temperature to 200°C, and crystallize at a constant temperature for 24 hours;

[0082] Cool the stainless steel reaction kettle to 30°C, wash the obtained product, dry at 120°C for 12 hours, and roast at 600°C for 6 hours to obtain SAPO-11 powder;

[0083] Add 1.9g of terephthalic acid, 2.3g of anhydrous zirconium chloride and 2.8g of SAPO-11 powder to 44.0g of N,N-dimethylformamide in sequence, and stir at 35°C for 2h to obta...

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Abstract

The invention provides a sulfate radical / zirconium oxide@SAPO-11 composite material, a hydrocarbon isomerization catalyst and application. The preparation method of the composite material comprises the following steps of: adding a zirconium metal source, a ligand and an SAPO-11 molecular sieve into a deprotonation solvent to obtain a suspension; crystallizing the suspension; drying and roasting the crystallization product to obtain a zirconium oxide@SAPO-11 composite material; and impregnating the zirconium oxide@SAPO-11 composite material with a sulfate solution, and carrying out drying and roasting to obtain the composite material. The composite material provided by the invention has relatively high B acid content. The hydrocarbon isomerization catalyst prepared by loading active metal on the composite material has very high total isomer selectivity, very high multi-branched-chain isomer selectivity and very low cracking selectivity. When the catalyst is applied to hydrocarbon isomerization reaction, the octane number of gasoline can be increased.

Description

technical field [0001] The invention relates to a sulfate / zirconia@SAPO-11 composite material, a hydrocarbon heterogeneous catalyst and its application, and belongs to the technical field of catalyst preparation. Background technique [0002] Nowadays, the automobile industry is developing very rapidly, and the exhaust emissions of motor vehicles have brought great harm to the environment and also damaged people's health. In order to reduce environmental pollution, countries around the world have formulated strict gasoline quality standards, and the general trend is to develop in the direction of low sulfur, low aromatics, and low olefins. Among gasoline components, aromatics and olefins are high-octane components, and the reduction of olefins and aromatics content will lead to a decrease in gasoline octane number, which cannot meet gasoline use standards. Therefore, reducing the content of olefins and aromatics in gasoline to meet gasoline quality standards without reducin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85B01J35/10B01J37/02B01J37/08C07C5/27C07C9/16C10G49/08
CPCB01J29/85B01J37/0201B01J37/088C07C5/2775C10G49/08B01J2229/186B01J2229/20B01J2229/40C07C2529/85C10G2300/305C10G2300/4006C10G2300/4012C10G2300/4018B01J35/615C07C9/16
Inventor 范煜文成龙
Owner CHINA UNIV OF PETROLEUM (BEIJING)