A sulfur-resistant noble metal hydrodesulfurization catalyst

A hydrodesulfurization, precious metal technology, applied in the direction of organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of low cracking activity of catalysts and achieve low cracking activity , good sulfur resistance stability, the effect of wide application prospects

Inactive Publication Date: 2011-12-28
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a supported noble metal hydrodesulfurization catalyst, which solves the problem of noble metal sulfur resistance, while the catalyst maintains a low cracking activity

Method used

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  • A sulfur-resistant noble metal hydrodesulfurization catalyst
  • A sulfur-resistant noble metal hydrodesulfurization catalyst
  • A sulfur-resistant noble metal hydrodesulfurization catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Preparation of silanized modified all-silicon MCM-41 (Si-MCM-41) supported Pd catalyst precursor by excess impregnation method: first place Si-MCM-41 in toluene (molecular sieve / toluene ratio: 1 g molecular sieve / 50ml toluene), then added trimethylchlorosilane (5% by volume), stirred and refluxed at 100°C for 6h, then filtered with suction, washed with toluene, and dried at room temperature for 12h to obtain silanized modified Si -MCM-41. Dissolve 0.022g of palladium acetate in 20ml of toluene, then add 1g of silanized modified Si-MCM-41, stir thoroughly for 10h, filter with suction, wash with absolute ethanol, dry in an oven at 120°C for 16h, and then The furnace was raised to 400° C. at 1° C. / min, and calcined for 5 hours to obtain a catalyst precursor. The loading amount of Pd was 0.2806 wt%. Record the catalyst as Pd / MCM-41(S)

Embodiment 2

[0017] Preparation of Silanized SiO by Isovolumetric Impregnation 2 Supported Pd catalyst precursor: first SiO 2 placed in toluene (SiO 2 / toluene ratio: 1g SiO 2 / 50ml toluene), then added trimethylchlorosilane (5% by volume), stirred and refluxed at 100°C for 6h, then suction filtered, washed with toluene, and dried at room temperature for 12h to obtain silanized modified SiO 2 . Dissolve 0.022g of palladium acetate in 3.5g of toluene, and fully dissolve by ultrasonic vibration. Weigh 1g of the silanized carrier powder and add it to the impregnation solution, impregnate it at room temperature for 8 hours, then dry it in an oven at 120°C for 16 hours, heat it up to 400°C in a muffle furnace at 1°C / min, and roast it for 5 hours to obtain the catalyst. body, the loading of Pd is 1wt%, and the catalyst is denoted as Pd / SiO 2 (S).

Embodiment 3

[0019] The Pt catalyst precursor supported by all-silicon MCM-41 was prepared by equal volume impregnation method, and then modified by silanization: 0.03g H 2 PtCl 6 Dissolve in 1.5mL of deionized water, then weigh 1g of Si-MCM-41, add to the above impregnation solution, impregnate at room temperature for 8h, dry in an oven at 120°C for 12h, and place in a muffle furnace at 400°C Calcined for 3 hours to obtain the precursor in the oxidized state. Place the precursor in toluene (precursor / toluene ratio: 1g precursor / 50ml toluene), then add trimethylchlorosilane (volume fraction 5V%), stir and reflux at 100°C for 6h, then suction filter, use Wash with water and ethanol, and dry at room temperature for 12 hours to obtain a catalyst precursor. The loading amount of Pt is 1wt%, and the catalyst is recorded as Pt / MCM-41(S)

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Abstract

The invention relates to a sulfur-resistant precious metal hydrodesulfurization catalyst, which belongs to the technical field of petroleum processing and relates to a solid catalyst used in the hydrodesulfurization process of petroleum distillate oil. The feature of the present invention is that the porous silicon-based material modified by silanization is used as a carrier, loaded with noble metal salt or noble metal organic complex, dried and calcined at 350-500°C to obtain the catalyst oxidation state precursor, and then In a hydrogen atmosphere, the temperature is raised to 200-400° C. at a rate of 1-10° C./min, and the reduction is carried out at this temperature for 0-5 hours to prepare a supported noble metal hydrodesulfurization catalyst. The effects and benefits of the present invention are that the prepared noble metal catalyst has high catalytic activity to aromatic heterocyclic sulfur-containing compounds in petroleum fractions under typical industrial application conditions, and has good sulfur resistance stability and low Cracking activity, can be used for clean fuel oil production.

Description

technical field [0001] The invention belongs to the technical field of petroleum processing, and relates to a solid catalyst used in the hydrodesulfurization process of gasoline, kerosene and diesel petroleum distillate oil. Background technique [0002] SO is formed when organic sulfur compounds in fuel burn x , is one of the main sources of air pollution. In recent years, with the intensification of the trend of crude oil becoming heavier and inferior, the content of organic sulfur compounds in fuel oil has gradually increased, but environmental protection requirements have become increasingly stringent. A common problem with sulfur content. [0003] In refineries, the removal of organic sulfur compounds in oil is mainly achieved by hydrodesulfurization (HDS) process. Traditional HDS catalysts are supported Co-Mo, Ni-Mo or Ni-W bimetallic sulfides. Although they have been continuously improved for decades, their activity still cannot meet the requirements of increasingl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/28C10G45/10
Inventor 李翔王敬伟王安杰段维芳
Owner DALIAN UNIV OF TECH
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