Mesoporous magnesium oxide, hydrodesulfurization catalyst loading CoMo metal sulfide and application thereof

A mesoporous magnesia and metal sulfide technology, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, magnesium oxide, etc., can solve the problem of low desulfurization activity and achieve high catalytic activity , Improve the specific surface area and improve the effect of hydrodesulfurization

Active Publication Date: 2013-06-19
WENZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional γ-Al 2 o 3 The supported metal sulfide catalyst has low desulfurization activity, and requires harsh operating conditions of high temperature and high pressure to meet the production of clean oil products

Method used

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  • Mesoporous magnesium oxide, hydrodesulfurization catalyst loading CoMo metal sulfide and application thereof
  • Mesoporous magnesium oxide, hydrodesulfurization catalyst loading CoMo metal sulfide and application thereof
  • Mesoporous magnesium oxide, hydrodesulfurization catalyst loading CoMo metal sulfide and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The preparation of mesoporous magnesia was carried out in a 300 mL autoclave, first weighing 20 g of Mg(OH) 2 Put it into the reaction kettle, then pour 230mL of distilled water into the reaction kettle. The reactor was sealed, with 1MPa of CO 2 Remove the air in the kettle and repeat the operation three times to ensure that the air in the kettle is exhausted.

[0037] Fill the reactor with CO 2 , the pressure is 4.0MPa, stirring at room temperature, the stirring speed is controlled at 350-500 rpm, a chemical reaction occurs, and the chemical reaction formula is 2CO 2 +Mg(OH) 2 = Mg(HCO 3 ) 2 . Due to the large amount of CO consumed during the reaction 2 , so it is necessary to continuously fill the reactor with CO 2 . React for 5 hours, then slowly release the remaining CO in the kettle 2 , filter the reaction solution in the kettle, in order to improve the Mg(OH) 2 The utilization rate is high, and the filter residue can be reused many times. will contain...

Embodiment 2

[0039] Embodiment 2: the preparation of catalyst

[0040] 2g M-MgO powder can impregnate 6g water in equal volume, and 0.0982 (NH 4 ) 6 Mo 7 o 24 4H 2 O, 0.0809g Co(NO 3 ) 2 ·6H 2 O and 0.0812g of ethylenediaminetetraacetic acid (EDTA) were dissolved in 6.0g of ammonia water (mass fraction 28.0%), and after they were all dissolved, they were added dropwise to 2g of M-MgO powder. Place it for 20 hours, dry it in a 100oC oven for 20 hours, press the prepared catalyst precursor under a certain pressure, take 40-60 mesh, and finally dry it in 10%H 2 S+H 2 In a mixed atmosphere, the rate of increase is 2oC / min, and it is vulcanized at 400oC for 3 hours. It is marked as CoMo / M-MgO#1 catalyst. Among them, the loading amount of Mo (as MoO 3 ) is 4.0% by mass percentage, the atomic ratio of Co / Mo is 0.5, and the atomic ratio of EDTA / Co is 1.0.

Embodiment 3

[0042] 2g M-MgO powder can impregnate 6g water, and 0.1964(NH 4 ) 6 Mo 7 o 24 4H 2 O, 0.1618g Co(NO 3 ) 2 ·6H 2 O and 0.1624g of ethylenediaminetetraacetic acid (EDTA) were dissolved in 6.0g of ammonia water (mass fraction 28.0%), and after they were all dissolved, they were added dropwise to 2g of M-MgO powder. Place it for 20 hours, dry it in a 100oC oven for 20 hours, press the prepared catalyst precursor under a certain pressure, take 40-60 mesh, and finally dry it in 10%H 2 S+H 2 In a mixed atmosphere, the rate of increase is 2oC / min, and it is vulcanized at 400oC for 3 hours. It is marked as CoMo / M-MgO#2 catalyst. Among them, the loading amount of Mo (as MoO 3 ) is 8.0% by mass percentage, the Co / Mo atomic ratio is 0.5, and the EDTA / Co atomic ratio is 1.0.

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Abstract

The invention discloses a mesoporous magnesium oxide, a hydrodesulfurization catalyst loading CoMo metal sulfide and an application thereof. The mesoporous magnesium oxide is prepared through the following steps that (1) water is used as reaction medium, magnesium hydroxide fully reacts with carbon dioxide under room temperature in an airtight reaction still, then reaction liquid in the reaction still is filtered, and filtrate which contains Mg (HCO3)2 is obtained; (2) macromolecule surfactant N, N-Diethyl-N-Cetyl-N- (3-methoxy silane propane) ammonium iodide are added into the filtrate which contains the Mg (HCO3)2, mixture is heated to 80 DEG C-95 DEG C and maintained to 0.5h-2h under stirring, the mixture is calcinated for 3h-4h after the mixture is filtered and dried, and the mesoporous magnesium oxide is obtained. The hydrodesulfurization catalyst loading CoMo metal sulfide is prepared by that the mesoporous magnesium oxide is used as carriers, is suitable for hydrodesulfurization reactions of dibenzothiophene, and exerts high catalytic activity.

Description

(1) Technical field [0001] The invention relates to a mesoporous magnesia and a hydrogenation desulfurization catalyst loaded with CoMo sulfide prepared by using the mesoporous magnesia and its application. (2) Background technology [0002] In recent years, with the improvement of people's living standards and the emphasis on the ecological environment, more and more stringent environmental protection regulations have been formulated. Among them, the sulfur-containing gas released during the combustion of fuel oil has caused serious pollution to the atmosphere and is the main cause of acid rain. Countries around the world have enacted more and more stringent fuel sulfur standards. For example, the European Union has implemented the Euro V standard, and the sulfur content should not exceed 10 μg / g. In 2010, the United States achieved the sulfur content in diesel oil below 15 μg / g. In my country, Beijing, Shanghai, Guangzhou and other cities have taken the lead in implementi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00C01F5/02B01J23/882C10G45/08
Inventor 唐天地马玉莉刘涛涛张磊宋文波柯清平金辉乐
Owner WENZHOU UNIVERSITY
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