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Gasoline selective hydrogenation desulfurization catalyst, and preparation method and application of catalyst

A hydrodesulfurization and selective technology, applied in refining to remove heteroatoms and other directions, can solve problems such as undisclosed S content, and achieve the effects of environmentally friendly process, high liquid yield and low cost

Inactive Publication Date: 2018-01-30
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

None of the above-mentioned patents discloses the data when the S content is reduced to less than 50ppm, especially when it is close to 10ppm

Method used

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  • Gasoline selective hydrogenation desulfurization catalyst, and preparation method and application of catalyst
  • Gasoline selective hydrogenation desulfurization catalyst, and preparation method and application of catalyst
  • Gasoline selective hydrogenation desulfurization catalyst, and preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Calcining pseudo-boehmite at 550°C for 4 hours to obtain γ-Al 2 o 3 , and then weigh the resulting γ-Al 2 o 3 Disperse 4g of powder in 120ml of deionized water, stir and disperse evenly, then transfer to a 200ml hydrothermal kettle, hydrothermally treat at 180°C for 4h, after the completion of hydrothermal treatment, wash with deionized water, dry at 100°C, and heat again at 550°C Roasted for 4 hours to obtain hydrothermally treated γ-Al 2 o 3 Carrier A1, the specific surface area of ​​A1 is 115m 2 / g, the pore volume is 0.42ml / g, and the pore size distribution is 10-60nm.

[0033] Molybdenum and cobalt were introduced on the carrier A1 by step-by-step impregnation. First, weigh 0.5016g of ammonium molybdate and dissolve it in 3.8ml of deionized water, impregnate 3g of carrier A1 with this solution, let it age for 20h, dry at 70°C overnight, and then bake at 500°C for 4h; after that, weigh 0.3604g of nitric acid Cobalt was dissolved in 3.8ml of deionized water, a...

Embodiment 2

[0035] Calcining pseudo-boehmite at 550°C for 4 hours to obtain γ-Al 2 o 3 , and then weigh the resulting γ-Al 2 o 3 Disperse 4g of powder in 120ml of deionized water, stir and disperse evenly, then transfer to a 200ml hydrothermal kettle, hydrothermally treat at 160°C for 4h, after the completion of hydrothermal treatment, wash with deionized water, dry at 100°C, and heat again at 550°C Roasted for 4 hours to obtain hydrothermally treated γ-Al 2 o 3 Carrier A2, the specific surface area of ​​A2 is 126m 2 / g, the pore volume is 0.45ml / g, and the pore size distribution is 10-60nm.

[0036] Molybdenum and cobalt were introduced on carrier A2 by step-by-step impregnation. First, weigh 0.5016g of ammonium molybdate and dissolve it in 4.6ml of deionized water, impregnate 3g of carrier A2 with this solution, let it age for 20h, dry at 70°C overnight, and then bake at 500°C for 4h; after that, weigh 0.3604g of nitric acid Cobalt was dissolved in 4.6ml of deionized water, and t...

Embodiment 3

[0038] Calcining pseudo-boehmite at 550°C for 4 hours to obtain γ-Al 2 o 3 , and then weigh the resulting γ-Al 2 o 3 Disperse 4g of powder in 120ml of deionized water, stir and disperse evenly, then transfer to a 200ml hydrothermal kettle, hydrothermally treat at 180°C for 6h, after the completion of hydrothermal, wash with deionized water, dry at 100°C, and heat again at 550°C Roasted for 4 hours to obtain hydrothermally treated γ-Al 2 o 3 Carrier A3, the specific surface area of ​​A3 is 90m 2 / g, the pore volume is 0.38ml / g, and the pore size distribution is 10-60nm.

[0039] Molybdenum and cobalt were introduced on carrier A3 by stepwise impregnation. First, weigh 0.5016g of ammonium molybdate and dissolve it in 3.2ml of deionized water, impregnate 3g of carrier A3 with this solution, let it age for 20h, dry it at 70°C overnight, and then bake it at 500°C for 4h; after that, weigh 0.3604g of nitric acid Cobalt was dissolved in 3.2ml of deionized water, and this solut...

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Abstract

The invention relates to a gasoline selective hydrogenation desulfurization catalyst, and a preparation method and application of the catalyst. The carrier of the catalyst is gamma-Al2O3 obtained through hydrothermal treatment, the specific surface area of the carrier is in a range of 70-140 m<2> / g, the pore volume of the carrier is in a range of 0.35-0.50 ml / g, and the active components of the carrier are cobalt and molybdenum. The preparation method of the catalyst comprises the following steps: performing hydrothermal treatment at a certain temperature on the gamma-Al2O3 obtained by roasting pseudo-boehmite; performing drying and roasting for re-dehydration to obtain a new gamma-Al2O3 carrier; performing dipping by using the active components molybdenum and cobalt, and performing dryingand roasting to obtain the catalyst. The catalyst provided by the invention has good gasoline hydrogenation desulfurization selectivity, the liquid yield is high (nearly 100%). the octane number lossis low (when the whole-fraction FCC gasoline is directly treated, and the content of the product S is about 10 ppm, the octane number loss is 2.1-2.3 units), and the catalyst has the advantages of simple preparation, low cost and the like.

Description

technical field [0001] The invention relates to a gasoline selective hydrodesulfurization catalyst and its preparation method and application, in particular to a gasoline selective hydrodesulfurization catalyst with hydrothermally treated alumina as a carrier, its preparation method and application. Background technique [0002] In recent years, with the rapid development of the economy, the number of motor vehicles has increased day by day. The typical problem brought about is the pollution caused by vehicle exhaust to the atmosphere, which has also become the main cause of environmental pollution in major cities. With the enhancement of people's awareness of environmental protection, how to solve the pollution of automobile exhaust has become the key, and solving automobile exhaust from the source, that is, using clean oil has become the top priority. The main product after the combustion of sulfur contained in oil is SO x , not only seriously pollute the atmosphere but a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/882C10G45/08
Inventor 李灿蒋宗轩张岑刘铁峰
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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