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Boron-containing catalyst as well as preparation method and application thereof

A technology of catalyst and physical pore-enlarging agent, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, heterogeneous catalyst chemical elements, etc., to achieve the effects of reducing activity decline, improving diffusion efficiency, and uniform loading

Pending Publication Date: 2021-04-30
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Although the physical and chemical properties of the hydrotreating catalyst prepared by the above method are improved in some aspects, the activity of the produced hydrotreating catalyst still needs to be further improved

Method used

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  • Boron-containing catalyst as well as preparation method and application thereof
  • Boron-containing catalyst as well as preparation method and application thereof
  • Boron-containing catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Take 1g of yeast and add it to 10mL of water to dissolve, then add 3g of glucose to the solution, stir until it is completely dissolved, and then keep the temperature at 20°C for 2 hours to form a mixed solution A1. Add 3.4 ml of boric acid aqueous solution containing 0.5 g of boron oxide to mixed solution A1 to form mixed solution B1.

[0040] Weigh carbon black powder I11.4 with a particle size of 800 mesh (the particles can pass through the 800-mesh sieve but not the 1000-mesh sieve) and place it in the spray rolling pot. The carbon black powder in the solution is sprayed and soaked in the mixed solution B1, and the soaked carbon black powder is homogenized for 1 hour for later use.

[0041] Take 200g of alumina dry rubber powder, add 4g each of squash powder and citric acid, and impregnated carbon black powder, mix well; weigh 9.5g of dilute nitric acid with a concentration of 68%, and add deionized water to dilute to 200mL. Knead the material for 15 minutes, then ad...

Embodiment 2

[0044] Same as Example 1, except that the weight of the carbon black powder is 14.3 grams, the particle size is 600 mesh (the particles can pass through the 600 mesh sieve but not the 800 mesh sieve), the boron-containing solution contains 0.6 grams of boron oxide, and the amount of boric acid solution is 7.2 ml. Catalyst C2 of the present invention was prepared. The catalyst MoO 3 The mass percentage is 23.1%, the mass percentage of NiO is 3.7 wt%, and the mass percentage of boron oxide is 0.8 wt%.

Embodiment 3

[0046] With embodiment 1, just the yeast addition in the boron-containing mixed solution is 4 grams, and starch is 6 grams, and the consumption of boric acid solution is 5.2 ml. Catalyst C3 of the present invention was prepared. The mass percent content of the catalyst MoO3 is 23.1%, the mass percent content of NiO is 3.7wt%, and the mass percent content of boron oxide is 0.8wt%.

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Abstract

The invention discloses a boron-containing catalyst as well as a preparation method and application thereof. The method comprises the following steps: (1) dissolving yeast in an aqueous solution, and mixing the solution with starch to form a mixed material; (2) mixing a boron-containing solution with the mixed material obtained in the step (1) to prepare a pre-impregnation solution, and introducing the pre-impregnation solution into a physical pore-enlarging agent for later use; (3) mixing pseudo-boehmite powder with the standby material obtained in the step (2), and molding, drying and roasting the mixture to obtain an aluminum oxide carrier; and (4) impregnating the alumina carrier with the hydrogenation active component impregnation liquid, and drying and roasting the alumina carrier to obtain the boron-containing catalyst. The activity stability of the hydrotreating catalyst prepared by the method is remarkably improved.

Description

technical field [0001] The invention relates to a boron-containing catalyst and its preparation method and application, in particular to a boron-containing hydrotreating catalyst and its preparation method and application. The prepared catalyst is especially suitable for heavy oil hydrogenation denitrogenation reaction . Background technique [0002] With the general heavy-duty crude oil in my country and the improvement of crude oil deep processing requirements worldwide, the diffusion resistance of heavy components in the catalyst pores is too large, and the deposition and coking of heavy metal impurities lead to catalyst activity decline or deactivation. The alumina carrier widely used in the industry has the characteristics of large pore size, which is conducive to the diffusion of macromolecular compounds into the catalyst particles, and the large pore volume is conducive to improving the ability to accommodate metals or coke. [0003] The acidity of the catalyst surfac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/883B01J37/02B01J37/08B01J37/36B01J21/02C10G45/08
CPCB01J23/883B01J23/002B01J37/0201B01J37/0018B01J37/36B01J21/02C10G45/08B01J2523/00B01J2523/305B01J2523/68B01J2523/847
Inventor 姜虹杨占林王继锋刘奕丁思佳王会刚
Owner CHINA PETROLEUM & CHEM CORP
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