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Method of realizing oil desulfuration by TiO2 catalyzed oxidation

A catalytic oxidation and oil product technology, applied in the petroleum industry, refined hydrocarbon oil, etc., can solve the problems of difficult to guarantee safety, large consumption of oxidant, long reaction time, etc., and achieve high economy, simple preparation process and low dosage little effect

Inactive Publication Date: 2010-09-29
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The selective oxidation of sulfides is a promising but challenging subject. Catalytic oxidation of Ti-containing molecular sieves is an oxidation system that has been studied more in recent years, but there are some problems, such as: large consumption of oxidants and difficulty in ensuring safety. ; Long reaction time, high process cost; Harsh conditions, photocatalytic reaction needs to be excited by ultraviolet light

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Mix 3.6 g of tetrabutyl titanate, STAB and absolute ethanol uniformly according to a certain mass, add a certain volume of aqueous solution of phosphotungstic acid, stir for 3 h, add deionized water, and continue to stir for 2 h. The mixture was then removed, rotary evaporated, washed, dried and calcined at 500°C. The mass ratio of tetrabutyl titanate to absolute ethanol is 1:7; the concentration of the phosphotungstic acid aqueous solution used is 0.15M; the molar ratio of phosphotungstic acid to STAB is 1:1; the phosphotungstic acid aqueous solution and deionized water The volume ratio is 0.96:10; the calcination time is 3h. Take 0.1 g of the molecular sieve obtained above, add 50 ml of an octane solution with an initial content of DBT of 300 ppm, heat up to 70 ° C, and add 1 ml of H under stirring. 2 O 2 (30%, wt), the reaction started. After the reaction is completed, centrifugation is performed to obtain the upper organic phase, which is analyzed by gas chromato...

Embodiment 2

[0014] Mix 3.6 g of tetrabutyl titanate, STAB and absolute ethanol uniformly according to a certain mass, add a certain volume of aqueous solution of phosphotungstic acid, stir for 3 h, add deionized water, and continue to stir for 2 h. The mixture was then removed, rotary evaporated, washed, dried and calcined at 500°C. The mass ratio of tetrabutyl titanate to absolute ethanol is 1:7; the concentration of the phosphotungstic acid aqueous solution used is 0.15M; the molar ratio of phosphotungstic acid to STAB is 1:1; the phosphotungstic acid aqueous solution and deionized water The volume ratio is 0.96:10; the calcination time is 3h. Take 0.1 g of the molecular sieve obtained above, add it to 50 ml of an octane solution with an initial content of 500 ppm of DBT, heat up to 70 ° C, and add 1 ml of H under stirring. 2 O 2 (30%, wt), the reaction started. After the reaction, centrifugal separation is performed to obtain an upper organic phase, which is analyzed by gas chromato...

Embodiment 3

[0016] Mix 3.6 g of tetrabutyl titanate, STAB and anhydrous ethanol uniformly according to a certain mass, add a certain volume of aqueous solution of phosphotungstic acid, stir for 3 h, add deionized water, and continue to stir for 2 h. The mixture was then removed, rotary evaporated, washed, dried and calcined at 500°C. The mass ratio of tetrabutyl titanate to absolute ethanol is 1:7; the concentration of the phosphotungstic acid aqueous solution used is 0.15M; the molar ratio of phosphotungstic acid to STAB is 1:1; the phosphotungstic acid aqueous solution and deionized water The volume ratio is 0.96:10; the calcination time is 3h. Take 0.1 g of the molecular sieve obtained above, add it to 50 ml of an octane solution with an initial content of DBT of 3000 ppm, heat up to 80 ° C, and add 1 ml of H under stirring. 2 O 2 (30%, wt), the reaction started. After the reaction, centrifugation was performed to obtain the upper organic phase. After 10 minutes of reaction, the con...

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Abstract

The invention discloses desulfurizing method catalyzed and oxidized by TiO2 in the chemical technical domain, which comprises the following steps: adopting phosphotungstic acid as catalyst and STAB as porous agent; blending butyl titanate, STAB and anhydrous alcohol evenly in the phosphotungstic acid solution; adding deionized water; rotating to evaporate; drying; sintering under 500 deg.c for 3h; synthesizing TiO2 molecular sieve; adding TiO2 molecular sieve into DBT-octane solution; heating; adding H2O2 to oxidize; washing; recycling catalyst.

Description

technical field [0001] The present invention relates to a kind of TiO 2 A method for realizing oil desulfurization by catalytic oxidation, in particular to a large-pore mesoporous TiO 2 The synthesis of molecular sieve and its use in the catalytic oxidation reaction of oil products to achieve deep desulfurization of oil products belong to the technical field of chemical industry Background technique [0002] With the development of science and technology and the enhancement of people's awareness of environmental protection, the pollution caused by automobile exhaust has gradually become the focus of people's attention, and the production of clean fuel will be the general trend of future development. Over the past decade, governments and petrochemical companies have tightened restrictions on the sulfur content of oil. In the face of increasingly strict restrictions on the sulfur content of oil products and the huge market demand for low-sulfur clean fuel oil, the deep desul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G27/00
Inventor 黄丹吕阳成骆广生
Owner TSINGHUA UNIV
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