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Iron oxide/aluminum oxide compound as well as preparation method and application thereof

A technology of alumina and iron oxide, which is applied in the field of viscosity reduction of heavy oil, can solve the problems of low viscosity reduction efficiency of heavy oil, high content of heavy components in heavy oil, poor thermal stability, etc., and achieve good degradation performance, good catalytic activity, good thermal stability

Pending Publication Date: 2021-08-20
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, provide an iron oxide / alumina composite and its preparation method and application, and solve the problems of low efficiency, poor thermal stability and viscosity reduction of hydrothermal cracking catalytic viscosity reduction in the prior art. Technical Problems with High Content of Heavy Components in Viscous Oil

Method used

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  • Iron oxide/aluminum oxide compound as well as preparation method and application thereof
  • Iron oxide/aluminum oxide compound as well as preparation method and application thereof
  • Iron oxide/aluminum oxide compound as well as preparation method and application thereof

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preparation example Construction

[0023] This specific embodiment provides a kind of preparation method of iron oxide / alumina composite, comprises the following steps:

[0024] S1, the Fe 2 o 3 Nanoparticles are dispersed in ethanol solution and ultrasonically treated for 10-30min, then phase separation agent is added sequentially until completely dissolved, then aluminum salt is added in an ice bath environment and stirred for 20min-40min until completely dissolved, then condensate is added under normal temperature and pressure conditions The gel inducer was vigorously stirred for 5min to 10min to obtain a mixed sol solution; the Fe 2 o 3 The mass of nanoparticles is 1-10% of the mass of the aluminum salt; the mass ratio of the phase separation agent, the aluminum salt and the gel inducing agent is (0.06-0.12): (4.26-4.38): ( 3.05~3.17); The phase separation agent is polyethylene oxide, preferably with a relative molecular mass of 1×10 6 Polyethylene oxide; the aluminum salt is aluminum chloride, further,...

Embodiment 1

[0031] This embodiment proposes an iron oxide / alumina composite, which is prepared by the following steps:

[0032] S1, the Fe 2 o 3 Nanoparticles were dispersed in ethanol solution and ultrasonically treated for 30 min, and then phase separation agent polyethylene oxide (relative molecular mass 1×10 6 ) to completely dissolve, then add crystalline aluminum chloride in an ice-bath environment and stir for 20 minutes until completely dissolved, then add the gel inducer propylene oxide under normal temperature and pressure conditions and stir vigorously for 5 minutes to obtain a mixed sol solution; the Fe 2 o 3 The quality of nanoparticles is 5% of the quality of the aluminum salt; the mass ratio of the polyethylene oxide, the crystalline aluminum chloride and the propylene oxide is 0.12:4.38:3.17; the volume of ethanol in the ethanol solution The concentration is 50%;

[0033] S2. Put the mixed sol solution into a sealed test tube and perform sol-gel conversion at 50°C for ...

Embodiment 2

[0037] This embodiment proposes an iron oxide / alumina composite, which is prepared by the following steps:

[0038] S1, the Fe 2 o 3 Nanoparticles were dispersed in ethanol solution and ultrasonically treated for 20 min, and then phase separation agent polyethylene oxide (relative molecular mass 1×10 6 ) to completely dissolve, then add crystalline aluminum chloride in an ice-bath environment and stir for 40min until completely dissolved, then add the gel-inducing agent propylene oxide under normal temperature and pressure conditions and stir vigorously for 10min to obtain a mixed sol solution; the Fe 2 o 3 The quality of nanoparticles is 8% of the quality of the aluminum salt; the mass ratio of the polyethylene oxide, the crystalline aluminum chloride and the propylene oxide is 0.06:4.26:3.05; the volume of ethanol in the ethanol solution The concentration is 40%;

[0039] S2. Put the mixed sol solution into a sealed test tube and perform sol-gel conversion at 45°C for 36...

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Abstract

The invention discloses an iron oxide / aluminum oxide compound as well as a preparation method and application thereof, and belongs to the technical field of viscosity reduction of thickened oil. The preparation method comprises the following steps of: S1, dispersing Fe2O3 nanoparticles in an ethanol solution, and then sequentially adding a phase separating agent, an aluminum salt and a gel inducer to obtain a mixed sol solution; S2, performing sol-gel conversion on the mixed sol solution at 40-50 DEG C to obtain wet gel, and then drying the wet gel at 40-60 DEG C to obtain dry gel; and S3, roasting the dry gel at 800-900 DEG C to obtain the iron oxide / aluminum oxide compound. The invention also comprises an iron oxide / aluminum oxide compound prepared by the preparation method. In addition, the invention also comprises application of the iron oxide / aluminum oxide compound in degradation of heavy oil. The viscosity reduction rate of the compound on heavy oil can reach 75.2%, the proportion of a heavy component cracked into a light component after viscosity reduction can reach 38.7%, and the thermal stability of the compound is good.

Description

technical field [0001] The invention relates to the technical field of viscous reduction of heavy oil, in particular to an iron oxide / alumina composite and its preparation method and application. Background technique [0002] As a potential unconventional energy source, heavy oil is increasingly favored. Hydrothermal cracking catalytic viscosity reduction is a commonly used technology in the exploitation of heavy oil. By injecting high-temperature steam into the oil layer and adding hydrothermal cracking catalytic viscosity reduction agent at the same time, the oil layer is regarded as a natural reactor and the heat provided by the steam is used. , under the action of the catalytic viscosity reducer, the heavy oil is catalytically cracked under hydrothermal conditions, the large molecules in the heavy oil are cracked into small molecules, and the viscosity of the heavy oil is irreversibly reduced, so that the heavy oil is easy to recover Purpose. The key to this technology...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/745B01J37/03B01J37/08C10G45/06
CPCB01J23/745B01J23/002B01J37/036B01J37/082C10G45/06
Inventor 吴配月马兆菲颜学敏杨欢李颢程仲富邓飞
Owner YANGTZE UNIVERSITY
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