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Aromatization catalyst for catalytic gasoline and its use

A technology for catalyzing gasoline and catalysts, which is applied in the petroleum industry, processing hydrocarbon oil, and hydrotreating processes, etc. It can solve problems such as affecting the catalytic effect of the catalyst, coking the catalyst, and weakening the catalytic activity of the catalyst.

Inactive Publication Date: 2004-04-14
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Diolefins are easy to polymerize on the strong acid sites on the surface of acidic zeolite catalysts, causing coking of the catalyst, weakening the catalytic activity of the catalyst, reducing the effect of octane recovery and the stability of catalytic performance
[0007] Therefore, too strong or too weak acidity of the octane recovery catalyst will affect the activity of the catalyst, and poor acidity control will eventually affect the catalytic effect of the catalyst

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0030] This example synthesized KL zeolite.

[0031] According to 8K 2 O:Al 2 O 3 : 2OSiO 2 : 320H 2 The proportion of O will be SiO 2 Silica sol with a content of 30m%, Al 2 O 3 Aluminum hydroxide with a content of 65 m% and potassium hydroxide with a KOH content of 82 m% were mixed together with vigorous stirring. Crystallize at 200°C for 50 hours. Then take out, filter and wash until the pH value of the filtrate is between 10 and 11. Dry at 120°C for 10 hours.

example 2

[0033] This example prepares 0.2m%Pd-2.0m%K 2 O / KL aromatization catalyst.

[0034] Above-mentioned synthetic KL zeolite 200g and 50g Al 2 O 3 The powder is mixed and ground evenly, 40 ml of KOH solution with a KOH content of 8g / 100ml is added, and then ground into a wet cake. After extrusion, it was dried at 120°C for 10 hours and calcined at 550°C for 6 hours. The KL zeolite aromatization catalyst carrier was prepared.

[0035]Take 50g of the above-mentioned carrier and put it into a vacuum filter bottle to pre-pump the air in the carrier hole, and add 100ml of H containing 0.10g of Pd. 2 PdCl 6 saline solution. After filtration, it was dried at 120°C for 10 hours and calcined at 520°C for 6 hours. Pd and K 2 The results of O content analysis showed that 0.2m%Pd-2.0m%K was prepared 2 O / KL aromatization catalyst. The number is A-1.

[0036] The specific surface area of ​​the above-mentioned A-1 aromatization catalyst is 350m 2 / g, the pore volume was 0.19 ml / g, an...

example 3

[0038] This example prepares 0.4m%Pt-2.0m%K 2 O / KL aromatization catalyst.

[0039] Get 50g of the above-mentioned carrier and put it into the vacuum filter bottle to pre-pump the air in the carrier hole, add 100ml of Pt content and be 0.20g of Pt(NH4) 3 ) 4 Cl 2 aqueous solution. After filtration, it was dried at 120°C for 10 hours and calcined at 520°C for 6 hours. Pt and K 2 The results of O content analysis showed that 0.4m%Pt-2.0m%K was prepared 2 O / KL aromatization catalyst. Numbered A-2.

[0040] The specific surface area of ​​the above-mentioned A-2 aromatization catalyst is 340m 2 / g, the pore volume was 0.19 ml / g, and the average pore diameter was 1.7 nm.

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Abstract

The present invention relates to an aromatization catalyst for gasoline and its application process. Said catalyst composition includes (by using weight percentage of catalyst as reference) 0.1m%-1.0m% of noble metal content, 50.0m%-90m% of K-type zeolite content, 1.0m%-5.0m% of K2O content and the rest is adhesive. Said catalyst can be used in the hydrodesulfurization process for catalyzing gasoline so as to attain the goal of desulfurization and reducing olefin content, and at same time obtaining less antiknock index loss of the product.

Description

1. Technical field [0001] The present invention relates to a catalytic cracking (FCC) gasoline aromatization catalyst and its application. 2. Background technology [0002] With the rapid development of my country's automobile industry, air pollution caused by automobile exhaust has been increasingly concerned by people. Due to the reduction of sulfur and olefin content in gasoline, CO and NO in automobile exhaust can be reduced X Therefore, the "Control Standards for Hazardous Substances in Motor Gasoline" formulated by the State Environmental Protection Administration of my country requires that the sulfur content of my country's motor gasoline be less than 800μg / g and the olefin content should be less than 35.0(v)%. The standard has been implemented in Beijing, Shanghai and Guangzhou since July 1, 2000, and will be implemented nationwide on January 1, 2003. With my country's accession to the World Trade Organization (WTO), my country's gasoline standards will gradually ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04
Inventor 赵乐平周勇庞宏段为宇陈玉琢
Owner CHINA PETROLEUM & CHEM CORP
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