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A kind of two-component transition metal sulfide nanotube and its preparation method and application

A transition metal and sulfide technology, applied in the field of catalytic technology and petrochemical industry, can solve the problems of low hydrodesulfurization activity, and achieve the effects of high desulfurization rate, high desulfurization performance and high specific surface area.

Active Publication Date: 2018-11-27
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, researchers have successfully prepared MoS 2 and WS 2 A variety of transition metal sulfide nanotubes (document Nature 360 ​​(1992) 444-446, J.Am.Chem.Soc.120 (1998) 734-742, J.Mater.Chem.14 (2004) 617- 624, Chem.Mater.23(2011) 4716-4720), however, the hydrodesulfurization activity of single-component sulfide is low, and it needs the modification of additives such as Co and Ni to have higher performance, but for two-component Nanotube Synthesis Research Existing Reports

Method used

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  • A kind of two-component transition metal sulfide nanotube and its preparation method and application
  • A kind of two-component transition metal sulfide nanotube and its preparation method and application
  • A kind of two-component transition metal sulfide nanotube and its preparation method and application

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Experimental program
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Effect test

Embodiment 1

[0026] Preparation of two-component oxide precursors:

[0027] Weigh cobalt acetate (0.002mol in terms of cobalt atoms) and ammonium heptamolybdate (0.004mol in terms of molybdenum atoms) and dissolve them in 50ml water respectively, pour the ammonium molybdate aqueous solution into the cobalt acetate polar solution rapidly, and transfer to 80 ℃ in a constant temperature water bath, stirred and refluxed under normal pressure for 4 hours, and a light purple solid precipitated. Afterwards, the obtained product was filtered, washed with water, and dried at 110°C for 8 hours to obtain a rod-shaped Co-Mo hydrated oxide powder, as shown in the attached figure 1 shown.

[0028] Replace the above-mentioned ammonium heptamolybdate with ammonium metatungstate, dissolve cobalt acetate (0.002 mol in terms of cobalt atoms) and ammonium metatungstate (0.004 mol in terms of tungsten atoms) in 50 ml of water, and dissolve the ammonium metatungstate aqueous solution Quickly pour it into the ...

Embodiment 2

[0030] Weigh cobalt acetate (0.004mol in terms of cobalt atoms) and ammonium heptamolybdate (0.004mol in terms of molybdenum atoms) and dissolve them in 50ml water respectively, pour the ammonium molybdate aqueous solution into the cobalt acetate polar solution rapidly, and transfer to 80 ℃ in a constant temperature water bath, stirred and refluxed under normal pressure for 4 hours, and a light purple solid precipitated. Afterwards, the obtained product was filtered, washed with water, and dried at 110° C. for 8 hours to obtain a rod-shaped Co—Mo hydrated oxide powder.

Embodiment 3

[0032] Weigh cobalt acetate (0.008mol in terms of cobalt atoms) and ammonium heptamolybdate (0.004mol in terms of molybdenum atoms) and dissolve them in 50ml water respectively, pour the ammonium molybdate aqueous solution into the cobalt acetate polar solution rapidly, and transfer to 80 ℃ in a constant temperature water bath, stirred and refluxed under normal pressure for 4 hours, and a light purple solid precipitated. Afterwards, the obtained product was filtered, washed with water, and dried at 110° C. for 8 hours to obtain a rod-shaped Co—Mo hydrated oxide powder.

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Abstract

The invention belongs to the technical fields of catalysis technology and petroleum chemical engineering, and specifically relates to a dual component transition metal sulfide nanotube, and a preparation method and applications thereof. In a mesoscopic view, the nanotube is in a one-dimensional hollow tubular structure. The length of the nanotube is 0.8 to 3.0 [mu]m. The inner diameter of the nanotube is 50 to 200 nm. The nanotube is a dual metal composite sulfide composed of a VIII group metal and a VIB group metal; wherein the VIII group metal sulfide accounts for 1 to 50% of the weight of the powder. The preparation method is simple and feasible, and can massively produce Co(Ni)-Mo(W) dual metal sulfide powder with a nanotube structure. Compared with a conventional preparation method, the energy consumption during the preparation process is low, and the obtained sulfide powder has a large specific surface area. The powder can be directly applied to the hydro-desulfurization reactions of inferior gasoline and diesel, and has a high desulfurization performance on benzothiophene compounds that are hard to remove, especially 4,6-dimethyldibenzothiophene with methyl substituents. The desulfurization rate is 3 to 4 times higher than that of a conventional supported hydro-desulfurization catalyst. The provided nanotube can deeply remove sulfur from gasoline and diesel under mild conditions.

Description

technical field [0001] The invention belongs to the field of catalytic technology and petrochemical technology, in particular to a two-component transition metal sulfide nanotube and its preparation method and application. Background technique [0002] Due to the development of the world economy, the demand for petroleum products has gradually increased, and the problem of heavy and inferior petroleum has become more and more prominent. The ratio of high-sulfur crude oil in the world has increased year by year. The sulfur compounds in oil products are the main source of air pollution. The SOx produced by the combustion of organic sulfur compounds in fuel oil will not only cause acid rain, but also produce dust particles, which will lead to increasing smog weather, seriously endangering the environment and human health. . To this end, all countries have promulgated strict fuel oil sulfur content standards. Europe has achieved the diesel fuel sulfur content of less than 10ppm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G45/06B01J27/04B01J27/043B01J27/045B01J27/047B01J27/049B01J27/051C01G39/06C01G41/00C01G37/00C01G53/11C01B17/20B82Y30/00
Inventor 李学兵李广慈岳利陈磊
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI