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Heteropolyacid-containing aromatics hydrogenation catalyst and preparation method thereof

A technology of aromatic hydrocarbon hydrogenation and heteropoly acid, applied in chemical instruments and methods, physical/chemical process catalysts, hydrogenation to hydrocarbons, etc. The effect of good thermal stability

Inactive Publication Date: 2012-02-01
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a heteropolyacid-containing aromatic hydrocarbon hydrogenation catalyst with high sulfur resistance and high activity and its preparation method for the problem that the reduced non-noble metal aromatic hydrocarbon hydrogenation catalyst is easily poisoned by sulfur.

Method used

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  • Heteropolyacid-containing aromatics hydrogenation catalyst and preparation method thereof
  • Heteropolyacid-containing aromatics hydrogenation catalyst and preparation method thereof
  • Heteropolyacid-containing aromatics hydrogenation catalyst and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0019] 1) Select the carrier: the carrier is 40-60 mesh and the specific surface is 380m 2 / g SiO 2 particles.

[0020] 2) Catalyst preparation: 106 mL of nickel nitrate solution with a concentration of 1 mol / L and 5.6 mL with a concentration of 3.0×10 -4 The cesium carbonate solution of mol / L was added to 82g of the above-mentioned carrier SiO 2 , let it stand for 12 hours, and then dry it at 110°C for 6 hours. The dried solid was raised to 400°C at a rate of 10°C / min in a muffle furnace, and kept at a constant temperature for 4 hours. Immerse the calcined solid in an aqueous solution containing 10g of phosphotungstic acid, let it stand for 8 hours, then dry it at 120°C for 6 hours, and press the dried material into tablets to obtain the catalyst. The chemical composition and heteropolyacid phase of the prepared catalyst are listed in Table 1.

[0021] 3) Evaluation conditions: the prepared catalyst was reduced in a hydrogen atmosphere at 400° C. for 4 hours. After the ...

Embodiment 2

[0023] 1) Select the carrier: the carrier is 40-60 mesh and the specific surface is 380m 2 / g SiO 2 particles.

[0024] 2) Catalyst preparation: 106 mL of nickel nitrate solution with a concentration of 1 mol / L and 11.4 mL with a concentration of 3.0×10 -4 The cesium carbonate solution of mol / L was added to 72g of the above-mentioned carrier SiO 2 , let it stand for 12 hours, and then dry it at 110°C for 6 hours. The dried solid was raised to 400°C at a rate of 10°C / min in a muffle furnace, and kept at a constant temperature for 4 hours. Immerse the calcined solid in 20g of phosphotungstic acid aqueous solution, let it stand for 8 hours, then dry it at 120°C for 6 hours, and press the dried material into tablets to obtain the catalyst. The chemical composition and heteropolyacid phase of the prepared catalyst are listed in Table 1.

[0025] 3) Evaluation conditions: the prepared catalyst was reduced in a hydrogen atmosphere at 400° C. for 4 hours. After the reduction is ...

Embodiment 3

[0027] 1) Select the carrier: the carrier is 40-60 mesh and the specific surface is 380m 2 / g SiO 2 particles.

[0028] 2) Catalyst preparation: 200mL of nickel nitrate solution with a concentration of 1mol / L and 5.6mL with a concentration of 3.0×10 -4 The cesium carbonate solution of mol / L was added to 75g of the above-mentioned carrier SiO 2 , let it stand for 12 hours, and then dry it at 110°C for 6 hours. The dried solid was raised to 400°C at a rate of 10°C / min in a muffle furnace, and kept at a constant temperature for 4 hours. Immerse the calcined solid in an aqueous solution containing 10g of phosphotungstic acid, let it stand for 8 hours, then dry it at 120°C for 6 hours, and press the dried material into tablets to obtain the catalyst. The chemical composition and heteropolyacid phase of the prepared catalyst are listed in Table 1.

[0029] 3) Evaluation conditions: the prepared catalyst was reduced in a hydrogen atmosphere at 400° C. for 4 hours. After the red...

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Abstract

The invention discloses a heteropolyacid-containing aromatics hydrogenation catalyst and a preparation method thereof, relating to a catalyst. The invention provides the heteropolyacid-containing aromatics hydrogenation with high sulphur resistance and high activity and the preparation method thereof. The catalyst comprises caesium heteropolyacid salts, hydrogenated components and a carrier, wherein the heteropolyacid caesium salts are caesium phosphotungstate or caesium silicotungstate, and the like; the hydrogenated components comprise Ni transition metal element, and the like; the carrier is a porous heat-resisting inorganic material; and the contents of all the components of the catalyst in percentage by mass are that: 5-40 percent of heteropolyacid, 0.2-0.5 percent of caesium, 5-20 percent of hydrogenated component and the balance of carrier. The preparation method comprises the following steps of: adding an water-soluble nickel salt solution and water-soluble heteropolyacid caesium salts into the carrier and impregnating; drying solid matters obtained through liquid-solid separation, and then roasting; preparing an aqueous caesium heteropolyacid salt solution, adding the aqueous caesium heteropolyacid salt solution to the obtained solid matters; impregnating and drying; and tabletting and forming to obtain the heteropolyacid-containing aromatics hydrogenation catalyst.

Description

technical field [0001] The invention relates to a catalyst, in particular to a heteropolyacid-containing aromatic hydrocarbon hydrogenation catalyst and a preparation method thereof. Background technique [0002] In the oil refining industry, the hydrogenation technology of aromatics has been paid more and more attention, mainly because the excessively high aromatics content in oil products has caused environmental problems. If there are too many aromatics in the diesel fraction derived from heavy oil, it will increase the particulate emissions in the diesel combustion exhaust gas, so as to aggravate the environmental pollution. Moreover, since there is a certain amount of sulfide in oil products, the catalyst will inevitably be affected by sulfur poisoning during the hydrogenation process. The development of aromatic hydrocarbon hydrogenation catalysts with high sulfur resistance and high activity is a current research hotspot. one. [0003] The reduced aromatic hydrocarb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/188B01J23/888C07C13/18C07C5/10
Inventor 方维平郑进保陈秉辉杨乐夫赖伟坤李娟娟
Owner XIAMEN UNIV
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