Hollow mesoporous copper/titanium dioxide/nickel catalyst for desulfurization as well as preparation and application thereof

A titanium dioxide and nickel catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, catalyst activation/preparation, physical/chemical process catalysts, etc., can solve the problem that the alumina carrier is difficult to meet the requirements, has poor stability, and hinders the application. and other problems, to achieve the effect of outstanding desulfurization effect, beneficial to industrial production and simple preparation process

Active Publication Date: 2021-03-16
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Alumina supports are used in most refining processes, but where acidic sites catalyze harmful isomerization or oligomerization reactions, alumina supports are not adequate
Furthermore, although noble metals can achieve excellent activity, their poor stability and high cost hinder their industrial applications.

Method used

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  • Hollow mesoporous copper/titanium dioxide/nickel catalyst for desulfurization as well as preparation and application thereof
  • Hollow mesoporous copper/titanium dioxide/nickel catalyst for desulfurization as well as preparation and application thereof
  • Hollow mesoporous copper/titanium dioxide/nickel catalyst for desulfurization as well as preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A hollow mesoporous copper / titanium dioxide / nickel core-shell catalyst for desulfurization is prepared by the following method:

[0041] Measure 4mL tetraethyl orthosilicate (TEOS) and 140mL absolute ethanol, stir evenly with a magnetic force, mark it as solution A, and set aside; measure 4mL ammonia water and 25mL H 2 O, magnetically stir evenly, mark it as solution B, and wait for use; use a constant flow pump, slowly drop solution B into solution A at a flow rate of 2mL / min, stir vigorously at 25°C for 24h, and the stirring speed is 1100rpm; The resulting liquid was centrifuged and washed three times with deionized water and absolute ethanol respectively, and measured with a pH meter until it was neutralized, and the obtained solid was dried overnight at 110° C. in a drying oven. Finally, the dried solid was calcined in a tube furnace at a heating rate of 2 °C / min at 550 °C for 5 h to obtain spherical SiO 2 nanoparticles;

[0042] 0.2g SiO 2 Nanoparticles were dis...

Embodiment 2

[0046] A hollow mesoporous copper / titanium dioxide / nickel core-shell catalyst for desulfurization is prepared by the following method:

[0047] Measure 4mL tetraethyl orthosilicate (TEOS) and 140mL absolute ethanol, stir evenly with a magnetic force, mark it as solution A, and set aside; measure 4mL ammonia water and 25mL H 2 O, magnetically stir evenly, mark it as solution B, and wait for use; use a constant flow pump, slowly drop solution B into solution A at a flow rate of 2mL / min, stir vigorously at 25°C for 24h, and the stirring speed is 1100rpm; The resulting liquid was centrifuged and washed three times with deionized water and absolute ethanol respectively, and measured with a pH meter until it was neutralized, and the obtained solid was dried overnight at 110° C. in a drying oven. Finally, the dried solid was calcined in a tube furnace at a heating rate of 2 °C / min at 550 °C for 5 h to obtain spherical SiO 2 nanoparticles;

[0048] 0.2g SiO 2 Nanoparticles were dis...

Embodiment 3

[0052] A hollow mesoporous copper / titanium dioxide / nickel core-shell catalyst for desulfurization is prepared by the following method:

[0053] Measure 4mL of tetraethyl orthosilicate (TEOS) and 140mL of absolute ethanol, stir evenly with a magnetic force, mark it as solution A, and set aside; measure 4mL of ammonia water and 25mL of H 2 O, magnetically stir evenly, mark it as solution B, and wait for use; use a constant flow pump, slowly drop solution B into solution A at a flow rate of 2mL / min, stir vigorously at 25°C for 24h, and the stirring speed is 1100rpm; The resulting liquid was centrifuged and washed three times with deionized water and absolute ethanol respectively, and measured with a pH meter until it was neutralized, and the obtained solid was dried overnight at 110° C. in a drying oven. Finally, the dried solid was calcined in a tube furnace at a heating rate of 2 °C / min at 550 °C for 5 h to obtain spherical SiO 2 nanoparticles;

[0054] 0.2g SiO 2 Nanopartic...

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PUM

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Abstract

The invention relates to a hollow mesoporous copper / titanium dioxide / nickel catalyst for desulfurization as well as preparation and application thereof. The catalyst comprises hollow mesoporous TiO2 nanospheres and metal species loaded on the hollow mesoporous TiO2 nanospheres, wherein the metal species comprise copper and nickel, the copper is loaded on the inner surfaces of the hollow mesoporousTiO2 nanospheres, and the nickel is loaded on the outer surfaces of the hollow mesoporous TiO2 nanospheres. The preparation method comprises the following steps: firstly coating the surfaces of SiO2nanospheres with the Cu species, then coating the surfaces of the SiO2 nanospheres with a mesoporous TiO2 layer, then coating the surfaces of the SiO2 nanospheres with the Ni species, and finally etching off the SiO2 nanospheres to obtain the hollow mesoporous Cu@TiO2@Ni core-shell catalyst. Compared with the prior art, the core-shell catalyst disclosed by the invention is high in reaction activity, simple in preparation process and outstanding in deep desulfurization effect on sulfides such as 4,6-DMDBT in fuel oil.

Description

technical field [0001] The invention belongs to the technical field of desulfurization catalysts, and relates to a hollow mesoporous copper / titanium dioxide / nickel core-shell catalyst for desulfurization and its preparation and application. Background technique [0002] In recent years, with the continuous rapid growth of the national economy, more and more cars are used, and the exhaust gas of cars contains many harmful substances (such as sulfide, etc.), and the discharge of these harmful substances has brought a bad impact on the living environment of human beings . For example: Sulfur dioxide can form acid rain, which harms ecosystems and can cause health problems such as severe respiratory diseases when inhaled; sulfur compounds in fuel oil can also cause poisoning of tail gas treatment catalysts and pollute refinery equipment in the fuel production industry ; Trace amounts of sulfur impurities in sulfur-free fuels used in fuel cells can poison fuel cell reforming cata...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/755B01J35/08B01J35/10B01J37/02B01J37/08C10G45/06
CPCB01J23/755B01J35/08B01J35/1004B01J35/008B01J37/0018B01J37/0228C10G45/06C10G2300/202C10G2400/02
Inventor 王磊谢大祥张梦竹马莹莹孙梦李书珍
Owner SHANGHAI INST OF TECH
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