Preparation method of hydrodesulfurization catalyst

A hydrodesulfurization and catalyst technology, which is applied in the field of fuel oil hydrodesulfurization, can solve the problems of less preparation methods of new hydrodesulfurization catalytic materials, etc.

Inactive Publication Date: 2020-06-19
UNIV OF SCI & TECH LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] From the above analysis, it can be seen that there are few reports on the preparat

Method used

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  • Preparation method of hydrodesulfurization catalyst

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Embodiment 1

[0031] Preparation of NiMo / C-2 Catalyst

[0032] Measure 50ml of 6M dilute nitric acid solution, put it in a 250ml beaker, weigh 20g of 10-20 mesh coal-based porous carbon, soak the porous carbon in dilute nitric acid solution, ultrasonically treat for 10 minutes, replace the air bubbles, and continue soaking for 2 hours Take it out, wash until the pH of the washing solution is 7, and dry.

[0033] Put 10 g of the surface-modified coal-based porous carbon into a 100 ml beaker, and add 10 ml of ammonium molybdate solution with a Mo mass content of 12%. Sonicate for 30 minutes and let stand for 2 hours. Transfer the above carbon material and impregnating solution to a 250ml rotary evaporator, heat to 85°C and evaporate the impregnating solution to dryness. Pour into another dry beaker and let it stand for 12h. Bake in a vacuum oven at 80°C for 12 hours and take it out.

[0034] Put the dried carbon material into a tube furnace, raise it from room temperature to 500 °C at 3 °...

Embodiment 2

[0038] Preparation of NiMo / C-3 Catalyst

[0039] Measure 50ml of 9M dilute sulfuric acid solution, put it in a 250ml beaker, weigh 20g of 10-20 mesh coal-based porous carbon and soak it in the solution, and ultrasonically treat it for 10 minutes to replace the air bubbles. Take it out after continuing to soak for 6 hours, and wash until the washing solution is pH=7.

[0040] 10 g of activated coal-based porous carbon was put into a 100 ml beaker, and 10 ml of NiMoP solution with a mass content of Mo of 12% and a mass content of Ni of 2% was added. Sonicate for 30 minutes and let stand for 2 hours. Transfer the above carbon material and impregnating solution to a 250ml rotary evaporator, heat to 85°C and evaporate the impregnating solution to dryness. Pour into another dry beaker and let it stand for 12h. Bake in a vacuum oven at 80°C for 12 hours and take it out.

[0041] Put the dried carbon material into a tube furnace, raise it from room temperature to 500 °C at 3 °C / mi...

Embodiment 3

[0043] Preparation of NiMo / C-4 Catalyst

[0044] Measure 10g of potassium permanganate into 100ml of deionized water, heat to dissolve, and then put the solution in a 250ml beaker. Weigh 20 g of 10-20 mesh coal-based porous carbon and soak it in the solution, ultrasonically treat it for 10 minutes to replace the air bubbles, continue soaking for 12 hours, take it out, and wash until the pH of the washing solution is 7.

[0045] Basic nickel carbonate and ammonium molybdate were dissolved in ammonia water to prepare a NiMo ammonia solution with a mass content of Mo of 2.4% and a mass content of Ni of 0.4%. Take out 50ml of NiMo ammonia solution, and put 10g of activated coal-based porous carbon into a 100ml beaker, soak the porous carbon by excessive impregnation method, ultrasonic treatment for 30 minutes, and let it stand for 2h. Then transfer the above-mentioned carbon material and impregnating solution to a 250ml rotary evaporator, heat to 85°C and evaporate the impregnati...

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Abstract

The invention aims to improve the performance of a hydrodesulfurization catalyst and provides a preparation method of the hydrodesulfurization catalyst, which belongs to the field of fuel oil hydrodesulfurization. The preparation method comprises the following steps of 1) carrying out surface modification on a carbon-based material, and 2) preparing a precursor solution containing NiMo, CoMo or NiMo active components, loading the active components in the precursor solution on the surface of the surface-modified carbon-based material, drying, and calcining to obtain the carbon-based hydrodesulfurization catalyst containing the active components. The surface of the carbon material is modified; on the basis of not destroying the pore structure of the carbon material, the interaction between the metal active component and the carbon material is adjusted to obtain NiMo, CoMo and NiMo secondary active centers, so that the metal can be anchored on the surface of the carrier and can be deeplyvulcanized, and the hydrodesulfurization reaction performance of the sulfur-containing component and distillate oil can be obviously improved.

Description

technical field [0001] The invention belongs to the field of hydrogenation desulfurization of fuel oil, in particular to a preparation method of a hydrogenation desulfurization catalyst which uses carbon material as a carrier and can simultaneously realize the combined promotion of active components and carriers. Background technique [0002] The active components of hydrodesulfurization industrial catalysts are generally dominated by transition metal elements in groups VIB and VIII, usually binary or ternary combinations of Co, Ni, Mo, and W, and the most common ones are Ni-Mo, Co-Mo, Ni-W system. The catalyst support for hydrodesulfurization industry is usually alumina. Since the hydrodesulfurization active components (Ni-Mo, Co-Mo, Ni-W) have a strong metal support interaction with alumina, the metal is usually highly dispersed on the surface of the support, so the degree of sulfuration of the metal component is not high (The part combined with alumina cannot be vulcani...

Claims

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Application Information

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IPC IPC(8): B01J23/883B01J23/882B01J23/888C10G45/08
CPCB01J23/883B01J23/882B01J23/888C10G45/08C10G2300/202
Inventor 姚颂东于晓航董延增王祉衡刘艳艳徐国忠
Owner UNIV OF SCI & TECH LIAONING
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