A Beaded PD-Ni Adsorbent for Deep Desulfurization of Refined Benzene

An adsorbent and bead-shaped technology, applied in the field of bead-shaped Pd-Ni adsorbent, can solve the problems of increased production cost, single mode of action, unfavorable high sulfur capacity and high selective adsorption, etc., and achieve orderly distribution and enhanced Force and selectivity, effect of improving adsorption performance and selectivity

Active Publication Date: 2021-01-26
SUZHOU UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Now the industry generally adopts Pd / Al 2 o 3 The adsorbent realizes deep desulfurization, but Pd is a precious metal, and the loading is generally controlled at about 1%, but in order to increase the sulfur capacity, it is necessary to increase the loading of Pd, which will undoubtedly increase the production cost
On the other hand, a single metal Pd has a single interaction mode with thiophene, and it is distributed in the carrier without a fixed morphology, which is not conducive to the realization of high sulfur capacity and high selective adsorption in competitive adsorption.

Method used

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  • A Beaded PD-Ni Adsorbent for Deep Desulfurization of Refined Benzene
  • A Beaded PD-Ni Adsorbent for Deep Desulfurization of Refined Benzene
  • A Beaded PD-Ni Adsorbent for Deep Desulfurization of Refined Benzene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] According to the Pd:Ni atomic ratio of 2:1, weigh 8 mg palladium acetylacetonate, 3.37 mg nickel acetylacetonate, 40 mg cetyltrimethylammonium chloride and 70 mg glucose into a beaker, and then pour 9 mL into the beaker Oleylamine solution, sealed with a sealing film, ultrasonic treatment for 30min, until a light yellow clear solution appeared in the beaker. Then transfer the beaker to the reaction kettle, seal it and put it into an oven, set the reaction temperature to 150° C., and the reaction time to 10 h. After the reaction is over, cool the reaction kettle to room temperature, pour the product in the reaction kettle into a centrifuge tube, and centrifuge for 13 minutes at 3500r / min, then pour the supernatant into the prepared solvent mixture solution (volume Cyclohexane and ethanol with a ratio of 1:7), shake and centrifuge again, repeat this step 3 times, collect the precipitate, and dry it at 55°C to obtain the product.

[0044] like figure 1 As shown, it can b...

Embodiment 2

[0047] According to the Pd:Ni atomic ratio of 2:1, correspondingly weigh 9.2mg of palladium acetylacetonate and 3.90mg of nickel acetylacetonate, 37mg of cetyltrimethylammonium chloride and 80mg of glucose into a beaker, and then pour into the beaker 9mL oleylamine solution, sealed with a sealing film, ultrasonic treatment for 30min, until a light yellow clear solution appeared in the beaker. Then transfer the beaker to the reaction kettle, seal it and put it into an oven, set the reaction temperature to 150°C, and the reaction time to 9.5h. After the reaction is over, cool the reaction kettle to room temperature, pour the product in the reaction kettle into a centrifuge tube, and centrifuge for 13 minutes at 3500r / min, then pour the supernatant into the prepared solvent mixture solution (volume Cyclohexane and ethanol with a ratio of 1:7), shake and centrifuge again, repeat this step 3 times, collect the precipitate, and dry it at 70°C to obtain the product.

Embodiment 3

[0049] According to the Pd:Ni atomic ratio of 1:1, correspondingly weigh 8.55mg of palladium acetylacetonate and 6.45mg of nickel acetylacetonate, 40mg of cetyltrimethylammonium chloride and 90mg of glucose in a beaker, and then pour into the beaker 8.5mL oleylamine solution, sealed with a sealing film, ultrasonic treatment for 35min, until a light yellow clear solution appeared in the beaker. Then transfer the beaker to the reaction kettle, seal it and put it into an oven, set the reaction temperature to 170° C., and the reaction time to 8.5 hours. After the reaction is over, cool the reaction kettle to room temperature, pour the product in the reaction kettle into a centrifuge tube, and centrifuge for 12 minutes at 3500r / min, then pour the supernatant into the prepared solvent mixture solution (volume Cyclohexane and ethanol with a ratio of 1:9), shake and centrifuge again, repeat this step 5 times, collect the precipitate, and dry it at 65°C to obtain the product.

[0050]...

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Abstract

The invention relates to a bead-shaped Pd-Ni adsorbent for deep desulfurization of refined benzene. The beaded Pd-Ni adsorbent of the present invention is a beaded nano-chain with a diameter of 5 to 12 nm connected in series to form a beaded nano-chain with a length of several hundred nanometers. Order and uniform size. The preparation method of the above-mentioned bead-shaped Pd-Ni adsorbent adopts a hydrothermal method. After mixing the precursor salt of metal Pd and Ni with a surfactant and a reducing agent, it is transferred to a reactor. After the reaction is completed, it is purified and dried to obtain product. The bead-shaped adsorbent prepared by the present invention reduces the cost by introducing another metal Ni, while limiting the growth and agglomeration of Pd particles. The bead structure formed by the two combines the advantages of one-dimensional nano-chains and nanoparticles, and has good dispersibility, The surface area is large, the structure is stable, and the desulfurization effect is good; and the preparation process is simple, which is conducive to large-scale production.

Description

technical field [0001] The invention relates to the technical field of refined benzene desulfurization, in particular to a beaded Pd-Ni adsorbent for deep desulfurization of refined benzene. Background technique [0002] Benzene is an important chemical raw material, mainly used to produce styrene, cyclohexane and phenol, widely used in the manufacture of three major synthetic materials (plastics, synthetic fibers, synthetic rubber), and also used in dyes, medicine and Agrochemicals and other industries. The main sources of raw material benzene are petroleum benzene and coking benzene, a by-product of coal coking. my country is a country with a lot of coal and little oil. Coking crude benzene is rich in resources, but there are a lot of impurities in crude benzene, which prevents it from being directly used in chemical production. In particular, thiophene sulfur-containing impurities, which are similar to benzene in physical and chemical properties, are the most difficult ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/02B01J20/28B01J20/30C07C7/12C07C15/04
CPCB01J20/0203B01J20/28014B01J20/28019C07C7/12
Inventor 王亚涛董森李建华刘莉莉刘树俊李洪娟郭学华王志彦屠迎锋
Owner SUZHOU UNIV
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