Desulfurization catalyst and preparation method thereof

A desulfurization catalyst and catalyst technology, which are used in chemical instruments and methods, physical/chemical process catalysts, and purification with oxygenated compounds, etc., can solve the problems of low selectivity and low removal rate, and achieve simple preparation methods and photocatalysis. Excellent performance and the effect of saving raw materials

Inactive Publication Date: 2021-01-26
广州华晟生物科技发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the defects and deficiencies of low selectivity and low rem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A preparation method of a desulfurization catalyst, said method comprising the following steps:

[0033] (1) Weigh 2mmol of cetyltrimethylammonium bromide (CTAB) and 2mmol of sodium bromide respectively, dissolve them in 40ml of ethylene glycol, add 4mmol of bismuth nitrate, and stir magnetically for 1.5h to form a solution;

[0034] (2) Take a certain proportion of europium nitrate, lutetium nitrate and 0.005mol of cetyltrimethylammonium bromide and dissolve it in 15ml deionized water, magnetically stir, and configure a solution; the stirring speed is 150rpm, and the stirring time for 1h;

[0035] (3) Under magnetic stirring, add the solution obtained in step (2) dropwise to the solution in step (1), continue stirring for 2 hours, transfer to a hydrothermal reaction kettle, keep warm at 140°C for 20 hours, centrifuge, and wash , dried at 90° C. for 16 hours to obtain a bismuth oxybromide photocatalyst co-doped with europium and lutetium; The amount is 1wt%;

[0036]...

Embodiment 2

[0038] A preparation method of a desulfurization catalyst, said method comprising the following steps:

[0039] (1) Weigh 2mmol of cetyltrimethylammonium bromide (CTAB) and 2mmol of potassium bromide respectively, dissolve them in 50ml of ethylene glycol, add 4mmol of bismuth chloride, and stir magnetically for 2h to form a solution;

[0040] (2) The hexadecyltrimethylammonium bromide that takes a certain proportion of europium acetate, lutetium chloride and 0.006mol is dissolved in 20ml deionized water, magnetically stirred, and is configured into a solution; the stirring speed is 200rpm, and stirring The time is 0.5h;

[0041] (3) Under magnetic stirring, add the solution obtained in step (2) dropwise to the solution in step (1), continue stirring for 3 hours, transfer to a hydrothermal reaction kettle, keep warm at 160°C for 15 hours, centrifuge, and wash , dried at 100°C for 14h to obtain a bismuth oxybromide photocatalyst co-doped with europium and lutetium; The impurity ...

Embodiment 3

[0044] A preparation method of a desulfurization catalyst, said method comprising the following steps:

[0045] (1) Weigh 2mmol of cetyltrimethylammonium bromide (CTAB) and lithium bromide respectively, dissolve them in 30ml of ethylene glycol, add 4mmol of bismuth acetate, and stir magnetically for 0.5h to form a solution;

[0046] (2) The hexadecyltrimethylammonium bromide that takes a certain proportion of europium acetate, lutetium chloride and 0.004mol is dissolved in 10ml deionized water, magnetically stirred, and is configured into a solution; the stirring speed is 100rpm, and stirring The time is 1.5h;

[0047] (3) Under magnetic stirring, add the solution obtained in step (2) dropwise to the solution in step (1), continue stirring for 1 hour, transfer to a hydrothermal reaction kettle, keep warm at 120°C for 25 hours, centrifuge, and wash , dried at 80° C. for 18 hours to obtain a bismuth oxybromide photocatalyst co-doped with europium and lutetium; The impurity is ...

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PUM

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Abstract

The invention belongs to the technical field of catalysts, and particularly relates to a desulfurization catalyst and a preparation method thereof. The catalyst comprises europium and lutetium co-doped bismuth oxybromide, bismuth molybdate and bismuth phosphate, and the molar ratio of europium and lutetium co-doped bismuth oxybromide to bismuth molybdate to bismuth phosphate is 1:0.05 to 0.15:0.05to 0.15; the doping amount of europium relative to bismuth oxybromide is 0.5 to 1.5 wt%, and the doping amount of lutetium relative to bismuth oxybromide is 0.5 to 1.5 wt%. The preparation method comprises the following steps: preparing europium and lutetium co-doped bismuth oxybromide through a solvothermal method, dispersing the europium and lutetium co-doped bismuth oxybromide into deionized water, adding molybdic acid and phosphoric acid, and preparing praseodymium and lutetium co-doped bismuth oxybromide/bismuth molybdate/bismuth phosphate through a hydrothermal method. The preparation method is simple. In addition, aromatic heterocyclic thiophene sulfide in fuel oil is removed in a high-selectivity and high-efficiency manner, and the catalyst is an ideal material for treating the aromatic heterocyclic thiophene sulfide in the fuel oil.

Description

technical field [0001] The invention belongs to the technical field of catalysts. More specifically, it relates to a desulfurization catalyst and a preparation method thereof. Background technique [0002] With the rapid development of the national economy, the use of automobiles is increasing day by day, so the consumption of gasoline is increasing. The SOx and NOx released into the air by incomplete combustion of gasoline have caused huge pollution to the environment on which human beings depend. Automobile exhaust is one of the main sources of air pollution, especially SOx discharged into the atmosphere will cause direct damage to the human body and also form acid rain, causing environmental deterioration and seriously endangering people's lives. Therefore, the production of ultra-low sulfur gasoline has become a problem that various countries pay close attention to and urgently need to be resolved. 90% of the sulfur in my country's motor gasoline comes from catalytic c...

Claims

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Application Information

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IPC IPC(8): B01J27/192C10G27/04
CPCB01J27/192B01J35/004C10G27/04
Inventor 黎新安
Owner 广州华晟生物科技发展有限公司
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