Lithium-titanium composite metal oxide micro/nano material and its preparation method and application

A composite oxide and lithium-titanium composite technology, which is applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, chemical/physical processes, etc. Degradation research and other issues, to achieve the effect of easy large-scale preparation, strong oxidation performance, and simple and easy preparation method

Active Publication Date: 2020-09-11
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, there is no literature report on the catalytic degradation of halogenated aromatic hydrocarbons by composite micro-nano metal oxides.

Method used

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  • Lithium-titanium composite metal oxide micro/nano material and its preparation method and application
  • Lithium-titanium composite metal oxide micro/nano material and its preparation method and application
  • Lithium-titanium composite metal oxide micro/nano material and its preparation method and application

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preparation example Construction

[0036] The method for preparing the above-mentioned lithium-titanium composite metal oxide micro / nano material provided by the present invention, its main steps are:

[0037] 1) Dissolve the lithium-containing compound in a corresponding amount of aqueous solution, add a certain amount of hydrogen peroxide at the same time, and after stirring evenly, slowly add the titanium-containing compound into the solution while stirring continuously. After the precipitate is dissolved and the solution is transparent, it is transferred to a hydrothermal reaction kettle to react for a period of time. After the solution is cooled to room temperature, the precipitate is collected; the precipitate is washed with distilled water and centrifuged, and dried in an oven to obtain a lithium-titanium composite metal oxide micro / nano material precursor;

[0038] In step 1): the molar ratio of lithium and titanium is 1-10:1-10. The aqueous solution containing lithium ions is one of lithium carbonate,...

Embodiment 1

[0045] Take LiOH·H 2 O 0.336g, hydrogen peroxide 1mL and distilled water 20mL were placed in a 100mL beaker, and stirred evenly at room temperature. Subsequently, 0.681 mL of tetrabutyl titanate was slowly added to the above aqueous solution, stirred by electromagnetic at room temperature to become a transparent liquid, and transferred to a 50 mL stainless steel reaction kettle. The reaction kettle was placed in a muffle furnace and reacted at 130°C for 12h. After the reaction was completed, it was cooled to room temperature, and the white precipitate was collected. The precipitate is washed and dried at 80° C. for several hours to obtain the precursor of the lithium-titanium composite metal oxide micro / nano material. The precursor was burned in an air atmosphere at 500 °C for 6 hours in a tube furnace to obtain the target product Li 4 TiO x , its SEM and XRD characterization results are as follows Figure 1A , Figure 1B and Figure 1C shown. Figure 1A , Figure 1B Th...

Embodiment 2

[0047] Take LiOH·H 2 O 0.168g, hydrogen peroxide 1mL and distilled water 20mL were placed in a 100mL beaker, and stirred evenly at room temperature. Subsequently, 0.681 mL of tetrabutyl titanate was slowly added to the above aqueous solution, stirred by electromagnetic at room temperature to become a transparent liquid, and transferred to a 50 mL stainless steel reaction kettle. The reaction kettle was placed in a muffle furnace and reacted at 130°C for 12h. After the reaction was completed, it was cooled to room temperature, and the white precipitate was collected. The precipitate is washed and dried at 80° C. for several hours to obtain the precursor of the lithium-titanium composite metal oxide micro / nano material. The precursor was burned in an air atmosphere at 500 °C for 6 hours in a tube furnace to obtain the target product Li 2 TiO x , its SEM and XRD characterization results are as follows Figure 2A , Figure 2B and Figure 2C shown. Figure 2A , Figure 2B ...

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Abstract

The invention discloses a lithium-titanium composite metal oxide micro / nano material. The lithium-titanium composite metal oxide micro / nano material is a particle having a diameter of about 2 to 4 [mu]m and mainly prepared through assembling of nanosheets. The phase of the lithium-titanium composite metal oxide micro / nano material is composed of a composite oxide of two metal elements, i.e., lithium and titanium, and a flower-like micro / nano metal oxide is formed; and a feeding mol ratio of lithium to titanium is (1-10): (1-10). The invention also discloses a preparation method and applicationof the lithium-titanium composite metal oxide micro / nano material. The lithium-titanium composite metal oxide micro / nano material of the invention can efficiently degrade aryl halide.

Description

technical field [0001] The invention relates to a lithium-titanium composite metal oxide micro / nano material for degrading halogenated aromatic hydrocarbons. [0002] The present invention also relates to a preparation method of the lithium-titanium composite metal oxide micro / nano material. [0003] The invention also relates to the application of the lithium-titanium composite metal oxide micro / nano material for degrading halogenated aromatic hydrocarbons. Background technique [0004] Halogenated aromatic hydrocarbons are a typical class of persistent organic pollutants, which have the characteristics of long-term persistence, bioaccumulation, high toxicity, semi-volatility and lipophilicity, including polychlorinated biphenyls, polychlorinated naphthalenes, and polychlorinated diphenyl ethers. , polybrominated diphenyl ethers, polychlorinated dibenzodioxins, polychlorinated dibenzofurans, and various organochlorine pesticides. These compounds are widely distributed in ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/04A62D3/30A62D101/04A62D101/22
CPCA62D3/30A62D2101/04A62D2101/22B01J23/002B01J23/04
Inventor 苏贵金李倩倩刘雅露郑明辉
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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