Deep hydrodesulfurization solid-acid catalyst of gasoline and preparation method thereof

A solid acid catalyst and deep hydrogenation technology, applied in the chemical field, can solve the problems of difficult long-term industrial operation, poor catalyst stability, etc., and achieve the effect of reducing sulfur content and good low-temperature aromatization performance

Inactive Publication Date: 2010-07-07
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst has poor stability and is difficult to meet the needs of long-term industrial operation

Method used

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  • Deep hydrodesulfurization solid-acid catalyst of gasoline and preparation method thereof
  • Deep hydrodesulfurization solid-acid catalyst of gasoline and preparation method thereof
  • Deep hydrodesulfurization solid-acid catalyst of gasoline and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Weigh 1.0g of phosphotungsten POM and dissolve it in 4.5ml of water, and stir properly to obtain a colorless and clear solution. The NiHZSM-5 prepared according to Comparative Example 1 was impregnated by equal volume impregnation method, impregnated for 12 hours, dried at 150° C. for 12 hours, and calcined at 350° C. for 4 hours. Get Cat1.

Embodiment 2

[0050] Weigh 1.0g silicotungsten POM and dissolve it in 4.5ml water, stir properly to obtain a colorless and clear solution. The NiHZSM-5 prepared according to Comparative Example 1 was impregnated by equal volume impregnation method, impregnated for 12 hours, dried at 150° C. for 12 hours, and calcined at 350° C. for 4 hours. Get Cat2.

Embodiment 3

[0052] Weigh 1.0g phosphomolybdenum POM and dissolve it in 4.5ml water, stir properly to obtain a yellow clear solution. It was impregnated onto NiHZSM-5 prepared according to Comparative Example 1 by equal volume impregnation method. After soaking for 12 hours, dry at 150°C for 12 hours, and bake at 350°C for 4 hours. Get Cat3.

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Abstract

The invention relates to the chemical field, in particular to a deep hydrodesulfurization solid-acid catalyst of gasoline and a preparation method thereof. Keggin-structure polyoxometallate (POM) is carried on a nano-sized ZSM-5 molecular sieve, and nickel nitrate is added to improve the catalytic performance of the catalyst. The invention is applicable to the modification of gasolines such as FCC gasoline, DCC gasoline, thermal cracking gasoline, coker gasoline and the like. The sulphur content in the gasoline treated by the catalyst is greatly reduced, and the catalyst has good low-temperature aromatization performance and is an ideal desulfurating, olefin-reducing and low-temperature aromatization catalyst.

Description

technical field [0001] The invention relates to the field of chemistry, in particular to a gasoline deep hydrodesulfurization solid acid catalyst and a preparation method thereof. Background technique [0002] The olefin content of finished FCC gasoline in my country is as high as 40-55%, and the sulfur content is 200-1500 μg / g, both of which are the main factors of environmental pollution caused by automobile exhaust emissions. Reducing the content of sulfur and olefins in gasoline can enhance the stability of gasoline, which is beneficial to the use of engines, and also reduces the emissions of volatile organic compounds, NOx and SOx in automobile exhaust. Therefore, both olefin and sulfur content are strictly limited in clean gasoline standards. my country's finished gasoline must gradually meet the National IV emission standard, which is close to the Euro IV standard. It is required that the sulfur content in gasoline is ≯50μg / g, the olefin content is ≯20vol.%, and the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/48C10G49/08
Inventor 王祥生郭新闻陈立东
Owner DALIAN UNIV OF TECH
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