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Hydrodesulfurization catalyst and preparation method thereof

A hydrodesulfurization and catalyst technology, applied in the fields of hydrodesulfurization catalyst and its preparation, low-temperature hydrodesulfurization catalyst for benzene hydrogenation and its preparation, can solve the problems of high reaction temperature and pressure, and achieve weak and good saturation selectivity Hydrodesulfurization performance and cost reduction effect

Inactive Publication Date: 2012-04-25
NANJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main disadvantages of the above-mentioned catalysts are high reaction temperature and pressure; strong saturation selectivity for aromatics (benzene and toluene), and often generate non-aromatic substances such as cyclohexane

Method used

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  • Hydrodesulfurization catalyst and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Weigh 61.8g (NH 4 ) 6 Mo 7 o 24 4H 2 O, 58.2gCo(NO 3 ) 2 ·6H 2 O was dissolved in deionized water to prepare a salt solution, then weighed 44.56g of alumina and immersed in the salt solution, baked at 100°C for 10h, roasted at 600°C for 10h, and cooled naturally. Then weigh 11.2gKNO 3 , 24.4gH 3 PO 4 Dissolve the compound solution prepared in deionized water, immerse the cooled catalyst in the compound solution, bake at 100°C for 10h, roast at 600°C for 10h, and cool naturally to obtain the target catalyst. Wherein the mass percentage content of the active component is 10%, and the mass percentage content of the auxiliary agent is 1%.

Embodiment 2

[0020] Weigh 69.3gNi(NO 3 ) 2 ·6H 2 O, 68.8g (NH 4 ) 6 Mo 7 o 24 4H 2 O, 20.1gCe(NO 3 ) 2 6H 2 O was dissolved in deionized water to prepare a salt solution, and then 45.13g of titanium oxide was weighed and immersed in the salt solution, baked at 150°C for 4 hours, roasted at 650°C for 4 hours, and cooled naturally. Then weigh 71.2g (NH 4 ) 10 W 12 o 41 ·xH 2 O was dissolved in deionized water to prepare the compound solution, and the cooled catalyst was immersed in the compound solution, baked at 150°C for 4 hours, calcined at 650°C for 4 hours, and cooled naturally to obtain the target catalyst. Wherein the mass percentage content of the active component is 20%, and the mass percentage content of the auxiliary agent is 5%.

Embodiment 3

[0022] Weigh 53.7g (NH 4 ) 6 Mo 7 o 24 4H 2 O, 4.2gPdCl 2 Dissolve the salt solution prepared in deionized water, then weigh 4.31g of alumina and immerse in the salt solution, bake at 120°C for 5h, bake at 500°C for 10h, and cool naturally. Then weigh 6.3gMg(NO 3 ) 2 6H 2 O, 36.2g (NH 4 ) 10 W 12 o 41 ·xH 2 O was dissolved in deionized water to prepare the compound solution, the cooled catalyst was immersed in the compound solution, baked at 120°C for 5h, calcined at 500°C for 10h, and cooled naturally to obtain the target catalyst. Wherein the active component mass percentage content is 10%, and the auxiliary agent mass percentage content is 5%.

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Abstract

The invention discloses hydrodesulfurization catalyst and a preparation method thereof, belongs to the technical field of catalyst, and particularly relates to hydrodesulfurization catalyst for benzene hydrogenation and a preparation method thereof. In the catalyst, at least two of oxides of nickel, molybdenum, cobalt, cerium, palladium and lanthanum metals are used as active ingredients; at least one of oxides of phosphorus, potassium, tungsten and magnesium is used as auxiliary agent; and the balance is a carrier. In the components, based on the mass of the catalyst, the catalyst comprises the components in percentage by mass: 10-20 percent of the oxides serving as the active ingredients, 1-5 percent of the oxide serving as the auxiliary agent and the balance the carrier. Aluminum oxide or titanium oxide is selected as the carrier. The invention provides the hydrodesulfurization catalyst; good hydrodesulfurization property can be kept under lower pressure and at lower temperature; the cost is reduced; and the saturation selectivity to aromatic hydrocarbon is weaker.

Description

technical field [0001] The invention relates to a hydrodesulfurization catalyst and a preparation method thereof, belonging to the technical field of catalysts, and in particular to a low-temperature hydrodesulfurization catalyst for benzene hydrogenation and a preparation method thereof. Background technique [0002] At present, foreign p-light benzene desulfurization mainly uses catalytic hydrogenation method, including low temperature hydrogenation (320℃~380℃, 3.5~4.0Mpa) and high temperature hydrogenation (600℃~630℃, 5.4~5.5Mpa). Catalyst systems mainly include Ni-Mo and Co-Mo, such as CN1100004, CN1210759 and other patents. The main disadvantages of the above-mentioned catalysts are high reaction temperature and pressure; strong saturation selectivity to aromatics (benzene and toluene), often producing non-aromatic substances such as cyclohexane. Contents of the invention [0003] The object of the present invention is to provide a kind of hydrodesulfurization cataly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J23/888B01J23/652B01J23/89C10G45/08C10G45/10
Inventor 祝社民刘小峰刘爱林
Owner NANJING UNIV OF TECH
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