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Aromatics hydrogenation catalyst and preparation method and application of aromatics hydrogenation catalyst

A technology for the hydrogenation of aromatics and catalysts, which is applied in the fields of hydrogenation and refining of aromatics, molecular sieve catalysts, chemical instruments and methods, etc., and can solve problems such as low stability and catalytic activity and limited catalytic applications

Inactive Publication Date: 2012-09-26
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to its amorphous pore wall, its stability and catalytic activity are low, which limits its catalytic application.

Method used

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  • Aromatics hydrogenation catalyst and preparation method and application of aromatics hydrogenation catalyst
  • Aromatics hydrogenation catalyst and preparation method and application of aromatics hydrogenation catalyst
  • Aromatics hydrogenation catalyst and preparation method and application of aromatics hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Mesoporous zeolite with conventional molecular sieve and mesoporous material characteristics obtained by prior art (known post-processing method, soft template method or hard template method), this embodiment takes Na-type mesoporous ZSM-5 zeolite as an example Instructions, according to the liquid-solid ratio of mesoporous zeolite and ammonium nitrate water-soluble 1:10, add Na-type mesoporous ZSM-5 zeolite to 0.1mol / L ammonium nitrate solution, stir at 90°C for 90 minutes under reflux, and filter , washed, dried at 120°C for 6 hours, baked at 500°C for 4 hours, and repeated three times. Obtain H-type mesoporous ZSM-5, take gained powder 5g and add 5mL containing Pt mass fraction and be 0.5% chloroplatinic acid aqueous solution (also can be the salt solution of palladium, rhodium, silver, ruthenium, gold, osmium, iridium or Mixed solution), let stand and soak for 4 hours, dry at 120°C for 4 hours, and bake at 500°C for 4 hours. The calcined material was pressed into t...

Embodiment 2

[0026] The catalytic hydrogenation reaction activity evaluation experiment adopts the fixed-bed micro-hydrogenation reactor-gas chromatography device as the activity evaluation device. The reaction raw material is a tridecane solution with a mass content of 10% naphthalene. First, 3ml of Pt / mesoporous ZSM-5 catalyst was reduced at 450°C for 3 hours under hydrogen atmosphere and normal pressure, and then the temperature was lowered to 300°C to feed the reaction raw materials for hydrogenation reaction. The reaction conditions are pressure 4MPa, raw oil volume space velocity 1h -1 . Hydrogen oil volume ratio 600Nm 3 / m 3 , sampled after 5 hours of reaction. Naphthalene hydrogenation activity evaluation results are shown in Table 2 and figure 1 .

Embodiment 3

[0028] Except that the evaluation reaction temperature is different at 250°C, all the other are the same as Example 2, and the evaluation results are shown in figure 1 .

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Abstract

Discloses is an aromatics hydrogenation catalyst. Mesoporous zeolite is used as a catalyst carrier, an active component of the aromatic hydrogenation catalyst includes precious metal, and the mass of the precious metal in the catalyst ranges from 0.1% to 2.0%. The precious metal is used as the hydrogenation active component of the catalyst, the mesoporous zeolite with the advantages of a zeolite molecular sieve and advantages of mesoporous materials is used as the carrier, and the catalyst is applicable to a polycyclic aromatic hydrocarbon hydrogenation reaction process, and is higher in hydrogenation activity and sulfur poisoning resistance. When the aromatic hydrogenation catalyst and a catalyst comprising a conventional zeolite molecular sieve and commercial aluminum oxide load precious metal by the same evaluation device, the aromatic hydrogenation catalyst is higher in hydrogenation and dearomatization activity and sulfuric resistance.

Description

technical field [0001] The invention belongs to the field of petrochemical technology, and in particular relates to a mesoporous zeolite-supported noble metal sulfur-resistant high-activity aromatic hydrocarbon hydrogenation catalyst. [0002] The present invention also relates to a method for preparing the above-mentioned catalyst. [0003] The present invention also relates to the application of the above-mentioned catalyst in the hydrogenation reaction of polycyclic aromatic hydrocarbons. Background technique [0004] With the increasing deterioration of crude oil worldwide, the content of polycyclic aromatic hydrocarbons in crude oil and its various distillates continues to increase. The presence of too much aromatics not only reduces the combustion performance of the fuel, but also leads to the increase of harmful particulate matter in the atmosphere; too much aromatics in aviation fuels can easily pyrolyze the long-chain alkanes and form solid deposits; at the same ti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/44C10G45/54
Inventor 吴晋沪王裕鑫方云明刘开拓何涛尹久盛
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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