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Preparation method of high nickel and tungsten dispersion catalytic material for diesel oil refining

A high-dispersion, catalyst technology, applied in the preparation of tungsten catalytic materials and the field of supported nickel, can solve the problems of low exchangeability of terephthalic acid, difficulty in realizing the ion exchange process, waste and other problems

Inactive Publication Date: 2012-11-14
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low exchangeability of terephthalic acid, the ion exchange process is difficult to realize, resulting in low raw material utilization and serious waste, making it difficult to industrialize

Method used

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  • Preparation method of high nickel and tungsten dispersion catalytic material for diesel oil refining
  • Preparation method of high nickel and tungsten dispersion catalytic material for diesel oil refining
  • Preparation method of high nickel and tungsten dispersion catalytic material for diesel oil refining

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] 1. Weigh 4.0g of ammonium nitrate and dissolve in 40ml of deionized water for later use.

[0019] 2. Weigh 3.0g of nickel nitrate and dissolve it in deionized water, then weigh 5g of γ-Al 2 o 3 join in. Immerse at room temperature for 1 h, then mix with step 1 solution.

[0020] 3. Adjust the pH of the mixed solution to 6.6 with diluted 10% ammonia water, stir for 20 minutes, transfer to a pressure vessel, and crystallize at 100°C for 24 hours.

[0021] 4. After the crystallization is completed, remove the reaction solution, wash the obtained solid particles several times with deionized water, and dry at 80°C for 12 hours to obtain Ni-Al-NO 3 -LDHs / γ-Al 2 o 3 .

[0022] 5. Weigh 5g Na 2 h 9 P(W 2 o 7 ) 6 Put it in a beaker, add 50ml deionized water to dissolve.

[0023] 6. The Ni-Al-NO obtained by crystallization 3 / LDHs and Na 2 h 9 P(W 2 o 7 ) 6 The solutions were mixed and stirred vigorously in a water bath at 60 °C.

[0024] 7. Add 2mol / L dilute H...

Embodiment 2

[0028] 1. Weigh 4.0g of ammonium nitrate and dissolve in 40ml of deionized water for later use.

[0029] 2. Weigh 3.0g of nickel nitrate and dissolve it in deionized water, then weigh 5g of γ-Al 2 o 3 join in. Immerse at room temperature for 1 h, then mix with step 1 solution.

[0030] 3. Adjust the pH of the mixed solution to 6.6 with diluted 10% ammonia water, stir for 4 hours, transfer to a pressure vessel, and crystallize at 120°C for 24 hours.

[0031] 4. After the crystallization is completed, remove the reaction solution, wash the obtained solid particles several times with deionized water, and dry at 80°C for 12 hours to obtain Ni-Al-NO 3 -LDHs / γ-Al 2 o 3 .

[0032] 5. Weigh 5g Na 2 h 9 P(W 2 o 7 ) 6 Put it in a beaker, add 50ml deionized water to dissolve.

[0033] 6. The Ni-Al-NO obtained by crystallization 3 / LDHs and Na 2 h 9 P(W 2 o 7 ) 6 The solutions were mixed and stirred vigorously in a water bath at 60 °C.

[0034] 7. Add 2mol / L dilute HNO ...

Embodiment 3

[0038] 1. Weigh 2.0g of ammonium nitrate and dissolve in 40ml of deionized water for later use.

[0039] 2. Weigh 3.0g of nickel nitrate and dissolve it in deionized water, then weigh 5g of γ-Al 2 o 3 join in. Immerse at room temperature for 1 h, then mix with step 1 solution.

[0040] 3. Adjust the pH of the mixed solution to 6.6 with diluted 10% ammonia water, stir for 2 hours, transfer to a pressure vessel, and crystallize at 80°C for 24 hours.

[0041] 4. After the crystallization is completed, remove the reaction solution, wash the obtained solid particles several times with deionized water, and dry at 80°C for 12 hours to obtain Ni-Al-NO 3 -LDHs / γ-Al 2 o 3 .

[0042] 5. Weigh 5g Na 2 h 9 P(W 2 o 7 ) 6 Put it in a beaker, add 50ml deionized water to dissolve.

[0043] 6. The Ni-Al-NO obtained by crystallization 3 / LDHs and Na 2 h 9 P(W 2 o 7 ) 6 The solutions were mixed and stirred vigorously in a water bath at 60 °C.

[0044] 7. Add 2mol / L dilute HNO d...

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PUM

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Abstract

The invention discloses a preparation method of a high nickel and tungsten dispersion catalytic material for diesel oil refining. Hydrotalcite is layered double metal hydroxides, nitrate radical intercalated hydrotalcite enabling the ion exchange to be easily realized is synthesized on a carrier, and target anions are intercalated between layers through the ion exchange to prepare a high-dispersion supported metal oxide. Alumina supported nitrate radical interlaced nickel and aluminum hydrotalcite is synthesized through an ammonia water precipitation method in the invention. An alumina supported high nickel and tungsten dispersion catalyst is prepared by allowing phosphotungstate radicals to enter a space between the layers through utilizing the good exchange of the nitrate radicals, and by further calcining. Analytic results show that the catalyst has the advantages of good accumulation height, large specific surface area, reasonable aperture distribution, and good hydrodesulfurization potential.

Description

technical field [0001] The invention relates to the preparation of a loaded nickel and tungsten catalytic material, which is used for hydrodesulfurization of diesel oil. Background technique [0002] Sulfur-containing compounds in diesel mainly exist in the form of mercaptans, thioethers, thiophenes and thiophene derivatives, and the sulfides released by combustion will seriously damage the environment. According to the current research, among various processes for improving diesel desulfurization, improving the catalytic efficiency of hydrodesulfurization catalyst is the most economical and effective method. Therefore, the development of diesel hydrodesulfurization catalysts with good stability and high activity has become a hot spot of widespread concern. [0003] For industrial diesel hydrodesulfurization catalysts, the impregnation method is generally used to impregnate the active metal component on the carrier in the form of salt, and then calcined to prepare the catal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888B01J37/30C10G45/06
Inventor 唐光诗蒲勇
Owner BEIJING UNIV OF CHEM TECH