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Iron-based compound as well as preparation method and application thereof

A compound, iron-based technology, applied in the direction of iron-organic compounds, refining with oxygen-containing compounds, chemical instruments and methods, etc., can solve problems such as poor results, and achieve short reaction time and good repeatability

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

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Problems solved by technology

[0003] Among these recovery technologies, steam injection-based thermal recovery technology is the most widely used. However, steam huff and puff and steam flooding in thermal recovery are restricted by various factors such as crude oil viscosity, oil layer thickness, burial depth, and short-term small viscosity reduction. It is only effective for heavy oil with a viscosity below 10000mPa·S, and it is also not effective for ultra-heavy oil with a higher viscosity

Method used

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  • Iron-based compound as well as preparation method and application thereof
  • Iron-based compound as well as preparation method and application thereof
  • Iron-based compound as well as preparation method and application thereof

Examples

Experimental program
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preparation example Construction

[0026] This specific embodiment also proposes a preparation method of an iron-based compound, comprising the following steps:

[0027] Mix 2,6 diisopropylaniline, 40%-45% glyoxal, formic acid and a third organic solvent, then react 1-2d, filter, and wash with cold methanol to obtain the diazepine; Wherein, the molar ratio of the 2,6-diisopropylaniline to the glyoxal is 2-3:1; the third organic solvent is anhydrous methanol;

[0028] Stir paraformaldehyde and HCl (4M in dioxane) at 30-60°C for 4-12h, then add a mixture of diazebutadiene and THF, and continue to stir the reaction at room temperature for 4-5h, filter and wash to obtain the 1,3-bis(2,6-diisopropyl-1-phenyl) imidazolium chloride; the molar ratio of the diazebutadiene, the paraformaldehyde and the HCl is 1:( 1-1.5): (1-1.5); It should be noted that the HCl is obtained by dissolving hydrogen chloride gas in dioxane;

[0029] Mix 1,3-bis(2,6-diisopropyl-1-phenyl)imidazolium chloride, potassium tert-butoxide and the ...

Embodiment 1

[0040] The iron-based compound proposed in this embodiment is prepared by the following steps:

[0041] Add 2,6 diisopropylaniline, 40% glyoxal, and formic acid into the third organic solvent absolute ethanol to react for 2d, filter, and wash with cold methanol to obtain the diazebutadiene; wherein, the The molar ratio of 2,6-diisopropylaniline to the glyoxal is 2:1; the yield of diazepine is 89.2%; figure 1 In, diazebutadiene 1 H-NMR (400MHz, CDCl 3 ): δl1.28(d, J=7.6Hz, 24H, CH(CH 3 ) 2 ,3.03(sep,J=6.4Hz,4H,CH(CH 3 ) 2 ),7.27(m,6H,(CH(CH 3 ) 2 ) 2 -C 6 h 3 ),8.19(s,2H,NCH), figure 1 Illustrates that diazebutadiene is obtained;

[0042] Stir paraformaldehyde and HCl (4M in dioxane) at 30°C for 12h, then add diazebutadiene and THF to the mixture, and continue to stir the reaction at room temperature for 4h, and filter and wash to obtain the 1, 3-bis(2,6-diisopropyl-1-phenyl)imidazolium chloride; the molar ratio of the diazebutadiene, the paraformaldehyde and the H...

Embodiment 2

[0046] The iron-based compound of the present embodiment is prepared by the following steps:

[0047] Add 2,6 diisopropylaniline, 45% glyoxal, and formic acid into the third organic solvent absolute ethanol to react for 1.5 days, filter and wash with cold methanol to obtain the diazebutadiene; wherein, the The molar ratio of said 2,6-diisopropylaniline to said glyoxal is 2.5:1; the productive rate of diazepine is 88.7%;

[0048] Stir paraformaldehyde and HCl (4M in dioxane) at 40°C for 12h, add it to the mixture of diazetidine and THF, then continue to stir the reaction at room temperature for 8h, and obtain the 1,3- Bis(2,6-diisopropyl-1-phenyl)imidazolium chloride; the molar ratio of said diazebutadiene, said paraformaldehyde and said HCl is 1:1.5:1; 1 , The yield of 3-bis(2,6-diisopropyl-1-phenyl)imidazolium chloride was 87.2%;

[0049] Mix 1,3-bis(2,6-diisopropyl-1-phenyl)imidazolium chloride and potassium tert-butoxide at a molar ratio of 2:1 and add to the first organi...

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Abstract

The invention discloses an iron-based compound as well a a preparation method and application thereof, and belongs to the technical field of thickened oil viscosity reduction exploitation. The preparation method comprises the following steps of: mixing 1, 3-bis (2, 6-diisopropyl-1-phenyl) imidazolium chloride, potassium tert-butoxide and a first organic solvent, and carrying out stirring for a reaction to obtain free N-heterocyclic carbene; and mixing the free N-heterocyclic carbene, an iron source and a second organic solvent, and carrying out stirring for a reaction to obtain the iron-based compound. The invention also comprises an iron-based compound prepared by the preparation method. In addition, the invention also provides application of the iron-based compound in catalytic degradation of thickened oil. The degradation rate of the iron-based compound provided by the invention on heavy oil can reach 85%.

Description

technical field [0001] The invention relates to the technical field of viscous oil production for heavy oil, in particular to an iron-based compound and its preparation method and application. Background technique [0002] The asphaltenes and colloids in heavy oil combine with unit flakes to form association particles through intermolecular interactions, including hydrogen bonds, acid-base interactions, coordination bonds, and π-π interactions. The micelles overlap and pile up into π-π stacking, further forming a supramolecular network structure, which affects the viscosity, high freezing point and fluidity of heavy oil in the formation, making it difficult to effectively exploit conventional methods. Currently used mining techniques can be summarized as thermal mining, physical mining, chemical mining and biological mining. [0003] Among these recovery technologies, steam injection-based thermal recovery technology is the most widely used. However, steam huff and puff and...

Claims

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Application Information

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IPC IPC(8): C07F15/02B01J31/22C09K8/592C10G27/10
CPCC07F15/02B01J31/2273C09K8/592C10G27/10B01J2531/842B01J2531/0233C10G2300/202
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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