Aromatic hydrocarbon hydrogenation catalyst and its preparation method

An aromatic hydrocarbon hydrogenation and catalyst technology, which is applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc., can solve the problems of low aromatic hydrocarbon hydrogenation activity, etc. Effects of hydrogen reactivity, shortened preparation process, and simplified operation

Inactive Publication Date: 2006-09-27
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The above two patented catalysts need to be sulfurized before use, and their aromatic hydrogenation activity is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Weigh 84.75g of basic nickel carbonate powder, add 1.0mol L -1 36.0mL of boric acid solution, then add 1.0mol·L -1 64.0mL of ammonium metatungstate solution, and mix the above materials evenly. Dry the mixed material at 100°C for 5 hours, and then roast the material at 350°C for 5 hours. The calcined material is pressed into tablets to obtain the catalyst, which consists of (based on the weight of the catalyst): NiO=75.6%, B 2 o 3 = 1.9%, WO 3 = 22.5%. Catalyst A has an average pore diameter of 5.30nm and a pore volume of 0.278ml·g -1 , the specific surface area is 242m 2 g -1 . Its composition and properties are shown in Table 1.

[0022] The activity evaluation experiment of catalyst hydrogenation reaction adopts flow type differential reactor-gas chromatography device as the activity evaluation device. The reaction raw material is containing 120mg·L -1 Carbon disulfide in ethylbenzene liquid. The catalyst was first reduced at 400°C for 3 hours under a hyd...

Embodiment 2

[0026] The preparation steps are as in Example 1. Weigh 84.75 g of basic nickel carbonate and add 1.0 mol L -1 144.0mL of boric acid solution, then add 1.0mol·L -1 107.0mL of ammonium metatungstate solution, mixed evenly, dried at 100°C for 5h, and then roasted at 450°C for 3h. The catalyst was obtained by tablet molding, and its composition and properties are shown in Table 1.

[0027] The activity evaluation of the catalyst is the same as in Example 1, and the results are shown in Table 2.

Embodiment 3

[0029] The preparation steps are as in Example 1. Weigh 84.75 g of basic nickel carbonate and add 1.0 mol L -1 108.0mL of boric acid solution, and then add 27.90g of ammonium paratungstate powder, mix well and bake at 450°C for 5h. Tablet 1 obtained Catalyst C, its composition and properties.

[0030] The activity evaluation of the catalyst is the same as in Example 1, and the results are shown in Table 2.

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Abstract

One kind of arene hydrogenating catalyst with high hydrogenating activity and high sulfur poisoning resistance and its simple preparation process are provided. The arene hydrogenating catalyst consists of nickel oxide, boron oxide and tungsten oxide. Its preparation process includes weighing nickel carbonate or basic nickel carbonate powder, adding boric acid solution of 1.0 mol / L concentration, adding tungstic acid, ammonium paratungstate or ammonium metatungstate solution, mixing, stoving, roasting, and tabletting. The preparation process is short and simple, and the catalyst has pore volume greater than 0.18 cu cm / g, specific surface area greater than 180 sq m / g, high arene hydrogenation activity, and high sulfur poisoning resistance.

Description

technical field [0001] The invention relates to an aromatic hydrocarbon hydrogenation catalyst and a preparation method thereof. Background technique [0002] Aromatics hydrogenation technology plays a very important role in petrochemical industry. High aromatics content in oil brings many problems, for example, the increase of aromatics content in diesel will increase the emission of particles in diesel combustion exhaust gas and aggravate environmental pollution. Since oil contains a certain amount of sulfide, it is unavoidable to be affected by sulfur poisoning in the hydrogenation process. At present, the common problem of high sulfide and aromatic content in fuel oil in my country needs to be solved urgently. Therefore, the research and development of sulfur-resistant and highly active aromatic hydrogenation catalysts is one of the hot issues in the field of catalysis. [0003] The core of aromatics hydrogenation technology is the catalyst. Aromatic hydrocarbon hydr...

Claims

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Application Information

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IPC IPC(8): B01J23/888B01J21/02C07C13/18
Inventor 方维平盛景云张国玉王跃敏
Owner XIAMEN UNIV
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