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Metal phthalocyanine sensitized tin dioxide photocatalyst and preparation method thereof

A photocatalytic and desulfurization catalyst technology, applied in the field of desulfurization of light fuel oil, can solve the problems of environmental pollution, unreported, difficult to remove sulfide, etc., and achieve obvious desulfurization effect and strong practical effect

Inactive Publication Date: 2014-06-11
NORTHWEST UNIV(CN)
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Problems solved by technology

Hydrodesulfurization is relatively easy to remove mercaptans and sulfides in oil fractions, but there are problems such as large one-time investment, high operating cost, and large hydrogen consumption, and it is difficult to remove dibenzothiophene and alkyl-substituted Dibenzothiophene series sulfides cannot meet the requirements of deep desulfurization; in addition, the removed sulfur exists in the form of hydrogen sulfide, which will also cause pollution to the environment
[0005] Metal phthalocyanine sensitized SnO 2 The application of visible light catalytic deep desulfurization has not been reported in China

Method used

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  • Metal phthalocyanine sensitized tin dioxide photocatalyst and preparation method thereof
  • Metal phthalocyanine sensitized tin dioxide photocatalyst and preparation method thereof
  • Metal phthalocyanine sensitized tin dioxide photocatalyst and preparation method thereof

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Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0029] Synthesis of sol-gel precursors:

[0030] SnCl with a molar ratio of 1:2 4 ·5H 2 Dissolve O and urea in distilled water, heat and reflux on a water bath at 60°C for 4 hours, slowly add 2 mol / L ammonia solution dropwise to adjust the pH of the system to 9, a white precipitate is formed, and the obtained precipitate is washed with distilled water several times until there is no Cl - , dried at 80°C, the obtained Sn(OH) 4 The powder was sintered in a muffle furnace at 200°C for 4h to obtain SnO 2 Ultrafine powder. Weigh 2g Sn(OH) 4 powder, dissolved in 20ml of absolute ethanol, then added 5ml of DMF and stirred evenly to obtain a sol-gel precursor.

[0031] Synthesis of metal phthalocyanine sensitized tin dioxide desulfurization catalyst:

[0032] Add the raw materials phthalonitrile and transition metal salts for the preparation o...

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Abstract

The invention discloses a metal phthalocyanine sensitized tin dioxide photocatalyst and a preparation method of the photocatalyst. The desulfurization catalyst contains MPc / SnO2 powder, wherein Pc represents phthalocyanine, and M is one or a combination of more of metal ions such as Mn<2+>, Fe<2+>, Co<2+>, Ni<2+>, Cu<2+> and Zn<2+>. After the dye-sensitized semiconductor photocatalytic desulfurizer is used for desulfuration for 3h, the removal rate of thiophene reaches up to 89% and is increased by 50% compared with that of a semiconductor which is not sensitized.

Description

technical field [0001] The invention relates to the technical field of desulfurization of light fuel oil, in particular to a preparation method of a metal phthalocyanine sensitized tin dioxide visible light catalyst and an application of the catalyst in oxidative desulfurization. Background technique [0002] With the rapid development of the automobile industry, the pollution of automobile exhaust to the environment has become a major factor. The combustion of sulfur-containing compounds in gasoline produces SOx, which is not only the main source of acid rain, but also significantly reduces the conversion efficiency of automobile exhaust catalysts to NOx, incompletely burned hydrocarbons and particulate matter, and aggravates environmental pollution. With the enhancement of people's awareness of environmental protection and the restrictions on sulfur emission indicators introduced by various countries, it has become an urgent call for people to protect the environment to pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/26C10G27/10
Inventor 赵建社张改张荣兰李莹莹冯勋
Owner NORTHWEST UNIV(CN)
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