A hydrogenation catalyst and its preparation method and use method

A technology of hydrogenation catalyst and molybdenum source, which is applied in the field of hydrogenation catalyst preparation, can solve the problems of low hydrogenation yield, easy coking of hydrogenation catalyst, etc., and achieves the advantages of improving hydrogenation yield, improving catalytic effect and stabilizing surface state. Effect

Active Publication Date: 2019-07-26
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For this reason, what the present invention is to solve is that existing hydrogenation catalysts have the defects of easy coking and low hydrogenation yield, and further provide a hydrogenation catalyst that is not easy to coke and has high hydrogenation yield and its preparation method and use method

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  • A hydrogenation catalyst and its preparation method and use method
  • A hydrogenation catalyst and its preparation method and use method

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Embodiment 1

[0035] This embodiment provides a hydrogenation catalyst and its preparation method. The hydrogenation catalyst is obtained by bonding organic phosphonic acid and molybdenum source after reaction, wherein the organic phosphonic acid is dihexylaminomethylphosphonic acid, the molybdenum source is ammonium heptamolybdate, and the mole of molybdenum in the organic phosphonic acid and molybdenum source The ratio is 1:0.5;

[0036] The preparation method of above-mentioned hydrogenation catalyst comprises the steps:

[0037] 1) Weigh 0.005mol of dihexylaminomethylphosphonic acid, place it in a single-necked flask, add 30mL of ethanol to dissolve it completely;

[0038] Take by weighing the ammonium heptamolybdate of 0.44g, and add it in the above-mentioned one-necked flask;

[0039] 2) Place a spherical condenser on the above-mentioned single-necked flask, stir the mixture obtained in step 1), and heat the mixture to 80° C. to reflux, and stop the reaction after keeping for 4 hour...

Embodiment 2

[0043] This embodiment provides a hydrogenation catalyst and its preparation method. The hydrogenation catalyst is obtained by bonding an organic phosphonic acid and a molybdenum source after reaction, wherein the organic phosphonic acid is diisooctylamine methylphosphonic acid, the molybdenum source is sodium molybdate, and the mole of molybdenum in the organic phosphonic acid and the molybdenum source The ratio is 1:1;

[0044] The preparation method of above-mentioned hydrogenation catalyst comprises the steps:

[0045] 1) Weigh 0.005mol of diisooctylamine methylphosphonic acid, place it in a single-necked flask, add 30mL of ethanol to dissolve it completely;

[0046] Take by weighing the sodium molybdate of 1.2g, and it is added in the above-mentioned one-necked flask;

[0047] 2) Place a spherical condenser on the above-mentioned single-necked flask, stir the mixture obtained in step 1), and heat the mixture to 100° C. to reflux, and stop the reaction after keeping for ...

Embodiment 3

[0051] This embodiment provides a hydrogenation catalyst and its preparation method. The hydrogenation catalyst is obtained by bonding organic phosphonic acid and molybdenum source after reaction, wherein the organic phosphonic acid is octadecylaminomethylphosphonic acid, the molybdenum source is ammonium heptamolybdate, and the mole of molybdenum in the organic phosphonic acid and molybdenum source The ratio is 1:1.5;

[0052] The preparation method of above-mentioned hydrogenation catalyst comprises the steps:

[0053] 1) Weigh 0.005mol of octadecylaminomethylphosphonic acid, place it in a single-necked flask, add 30mL of ethanol to dissolve it completely;

[0054] Take by weighing the ammonium heptamolybdate of 1.32g, and it is added in the above-mentioned one-necked flask;

[0055] 2) Place a spherical condenser above the above-mentioned one-necked flask, stir the mixture obtained in step 1), and raise the temperature of the mixture to 120° C. to reflux, and stop the rea...

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Abstract

The invention discloses a hydrogenation catalyst, a preparation method and an application method thereof. It uses organic phosphonic acid and molybdenum source as reaction raw materials, utilizes the reaction of the two, and bonds the two together to prepare a hydrogenation catalyst. Among them, the inventors found for the first time that P in the organic phosphonic acid can change the surface acidity of the active phase, increase the surface acidity of the hydrogenation catalyst after sulfidation, and the increase in acidity helps to enhance the hydrogenation activity of the hydrogenation catalyst; in addition, the presence of P has It helps stabilize asphaltenes, thereby inhibiting asphaltene condensation and coking, thereby reducing the amount of coke, slowing down catalyst deactivation, and finally reducing the coking rate and increasing the hydrogenation yield. At the same time, it is also found that the presence of P helps to change the structure of the active phase in the hydrogenation catalyst, which can reduce the amount of molybdenum with a tetrahedral structure that is difficult to vulcanize, and increase the amount of molybdenum with an octahedral structure that is easy to sulfide, which in turn facilitates the sulfuration of molybdenum. In the process, it is converted into molybdenum disulfide with suitable stacking layers, thereby increasing the activity of the hydrogenation catalyst and increasing the hydrogenation yield.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation catalyst preparation, specifically relates to a hydrogenation catalyst and its preparation method and use method, in particular to a suspension bed hydrogenation catalyst applied to low-quality oil and its preparation method and use method. Background technique [0002] Nowadays, due to the shortage of other resources, the demand for oil is increasing day by day. The insufficient supply of conventional crude oil makes unconventional oil have great potential in meeting the world's energy demand, so there is an increasingly urgent demand for lightening inferior oil (such as heavy oil or residual oil) and its development process. At present, the suspension bed hydrogenation process is an effective technical means to deal with inferior oil. [0003] In the above hydrogenation process, a suspension bed hydrogenation catalyst needs to be used. At present, it is divided into solid powder catalyst ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/34C10G45/04
CPCB01J31/0267B01J31/34C10G45/04
Inventor 江莉龙陈智祥曹彦宁马永德
Owner FUZHOU UNIV
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