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Gasoline and diesel hydrotreating supported catalyst and its preparation method and application

A supported catalyst and hydrofining technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, etc. High cost, low catalytic efficiency and other problems, to achieve the effect of grain size reduction, high catalytic efficiency, hydrodesulfurization and hydrodenitrogenation increase

Active Publication Date: 2016-07-06
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to solve this problem, the existing method generally adopts the method of hydrogenation refining of gasoline and diesel. The existing problems are that the cost of the required catalyst is high, the catalytic efficiency is low, and it is easy to deactivate, and hydrogen of higher purity is required in the refining process. ; In addition, the existing catalysts can only reduce one of sulfur, nitrogen or aromatic compounds in the refining process, but cannot reduce the content of the three substances at the same time

Method used

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  • Gasoline and diesel hydrotreating supported catalyst and its preparation method and application
  • Gasoline and diesel hydrotreating supported catalyst and its preparation method and application
  • Gasoline and diesel hydrotreating supported catalyst and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 Mo-Ni-Re hydrotreating supported catalyst

[0024] The preparation method is as follows:

[0025] (1) SiO2 2 -TiO 2 -ZrO 2 Preparation of ternary oxide support:

[0026] 1) ZrOCl 2 ·8H 2 O was dissolved in absolute ethanol to obtain a clear and transparent solution A;

[0027] 2) Measure 30mL of TiCl in the fume hood 4 Put the solution into a separatory funnel, drop it dropwise into a beaker with absolute ethanol, stir evenly, then use a pipette to pipette 50mL of silica sol and drop it into the solution to obtain Ti-containing solution B;

[0028] 3) Put the B solution into the separatory funnel and slowly add it dropwise to the above A solution to obtain the solution C;

[0029] 4) Dissolve the template agent polyethylene glycol-20000 in water, add ammonia water, adjust the pH to 8, and obtain solution D;

[0030] 5) Slowly add solution C to solution D to form a white flocculent precipitate;

[0031] 6) Seal the beaker with plastic wrap and let ...

Embodiment 2

[0038] Embodiment 2Mo-Re hydrotreating supported catalyst

[0039] The preparation method is as follows:

[0040] (1) SiO2 2 -TiO 2 -ZrO 2 Preparation of ternary oxide carrier: the preparation method is the same as that in Example 1.

[0041] (2) Preparation of Hydrofining Supported Catalyst:

[0042] Weigh 5.00g carrier, 0.62g (NH 4 ) 6 Mo 7 .4H 2 O soluble in water, 0.59gNH 4 ReO 4 Dissolved in boiling water, the ternary oxide support was sequentially impregnated in (NH 4 ) 6 Mo 7 .4H 2 O solution and NH 4 ReO 4 Immerse in the solution for 12 hours respectively, then dry at 120°C for 10 hours, and then in a muffle furnace at 550°C, after a constant temperature of 4 hours, to obtain a hydrofining supported catalyst, pulverize and finely grind,

[0043] The 40-60 mesh particles are obtained by sieving, and the molar ratio of the active components in the catalyst is Mo:Re=3:2.

Embodiment 3

[0044] Embodiment 3Mo-Ni hydrorefining supported catalyst

[0045] (1) SiO2 2 -TiO 2 -ZrO 2 Preparation of ternary oxide carrier: the preparation method is the same as that in Example 1.

[0046] (2) Preparation of Hydrofining Supported Catalyst:

[0047] Weigh 5.00g carrier, 0.52g (NH 4 ) 6 Mo 7 .4H 2 O dissolved in water, 1.51gNi(NO 3 ) 2 .6H 2 O was dissolved in water, and the ternary oxide support was sequentially impregnated in (NH 4 ) 6 Mo 7 .4H 2 O solution and Ni(NO 3 ) 2 .6H 2 Immerse in O solution for 12 hours respectively, then dry at 120°C for 10 hours, and then in a muffle furnace at 550°C and constant temperature for 4 hours, prepare a hydrorefining supported catalyst, pulverize, finely grind, and sieve to obtain 40-60 mesh particles , the molar ratio of the active components in the catalyst is Mo:Ni=9:4.

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Abstract

The invention relates to a novel gasoline and diesel hydrorefining supported catalyst as well as a preparation method and application thereof. According to the technical scheme, metal elements and scattered metal elements are loaded on an oxide carrier, wherein the oxide carrier is an SiO2-TiO2-ZrO2 three-element oxide carrier, the metal elements are selected from one or two of tungsten, chromium, cobalt, molybdenum and nickel, and the scattered metal elements are selected from one of Ga, Ge, In, Re and Cd. The catalyst microcosmically adopts a mesoporous structure (2 nm to 50 nm), is high in hydrodesulfurization (HDS) and hydrodenitrogeneration (HDN) activities on gasoline and diesel hydrorefining and higher in activity on aromatic hydrosaturation (HDA), and has the advantages that the operation is easy and the required process conditions are milder than conventional process conditions.

Description

technical field [0001] The invention belongs to the field of catalysts, in particular to a catalyst used for hydrogenation of gasoline or diesel oil. Background technique [0002] Gasoline or diesel, as the main energy source of motor vehicles in the current society, has been closely related to people's production and life. However, the pollution caused by the exhaust gas produced by its combustion is also very serious. [0003] On the one hand, the uncoordinated development of enterprise development and environmental protection in large cities in many countries has resulted in serious urban pollution and worsening air quality. Many countries have stricter restrictions on the content of sulfides, nitrides, and aromatics in exhaust gases from motor vehicles. . On the other hand, with the reduction of world oil reserves, the trend of heavy crude oil is becoming more and more obvious, and the content of sulfur, nitrogen, and aromatic compounds in it is constantly increasing. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/889B01J23/36B01J23/883B01J23/30B01J23/86B01J23/825B01J23/887C10G45/06C10G45/08C10G45/04
Inventor 李俊岳爽靳浩然李永峰朱兆刚李佳佳武瑞花
Owner LIAONING UNIVERSITY
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