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Preparation method of hydrodeoxidation isocatalyst, hydrodeoxidation isocatalyst and application thereof

A hydrodeoxygenation and catalyst technology, which is applied in the direction of fatty acid isomerization, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of poor adjustment of catalyst acidity and high requirements for catalyst selectivity, and achieve rich channels and increase catalytic efficiency , high catalytic efficiency

Active Publication Date: 2016-09-07
NANKAI UNIV +2
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Problems solved by technology

But this kind of catalyst can only get diesel oil, and the acidity of the catalyst is weak during the process of preparing diesel oil, while the carbon chain of kerosene is between gasoline and diesel oil, so the selectivity requirements of the catalyst are relatively high, and the acidity of the required catalyst is not easy to adjust. General catalysts are easy to directly convert vegetable oil into diesel or gasoline. At present, there are few catalysts that use carbon nanotubes to support active components to obtain highly selective kerosene.
In PCT / CN2015 / 089534 "Catalyst and preparation method and application for preparing bio-jet fuel from castor oil", we also used carbon nanotube mechanically mixed molecular sieves as the carrier of hydroisomerization, and supported precious metals to A hydroisomerization catalyst has been prepared, but the essence of this method is still a two-step method, and there are still problems with the two-step method. A method with better catalytic effect, simpler process, and better stability is needed for aviation Preparation of kerosene

Method used

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  • Preparation method of hydrodeoxidation isocatalyst, hydrodeoxidation isocatalyst and application thereof
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  • Preparation method of hydrodeoxidation isocatalyst, hydrodeoxidation isocatalyst and application thereof

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preparation example Construction

[0040] A preparation method of hydrodeoxygenation isomerization catalyst is characterized in that it comprises the following steps:

[0041] Step a: Attachment of the active component: attach the active component to the carbon nanotube;

[0042] Step b: Synthesis of hydrodeoxygenation isomerization catalyst: mix and stir the modified carbon nanotubes with active components attached to deionized water, silica sol, phosphoric acid and pseudo-boehmite, add the mixture to the template and stir, Recrystallization, washing, roasting, and reduction, to obtain the required hydrodeoxygenation isomerization catalyst.

[0043] In the step b, a precipitation agent is added to the crystallized mixture for precipitation, and then washing and roasting are performed to precipitate free active components to ensure the effect of the catalyst.

[0044] The process of step a is: 1) first hydroxylate the carbon nanotubes to obtain hydroxylated carbon nanotubes; 2) then aminate the hydroxylated carbon nano...

Embodiment 1

[0067] Example 1: Preparation of NiFeMWNTSAPO-11 catalyst

[0068] (1)NiFeMWNT-NH 2 The preparation steps: first add 10g of carbon nanotubes to 30g of 10% potassium hydroxide ethanol solution, reflux and stir at 80°C for 3-5 hours, then filter the resulting mixed solution under reduced pressure, and then filter the resulting mixture The cake is washed repeatedly with distilled water until the pH value of the solution is neutralized, and the finally obtained filter cake is baked in an oven at 110°C for 4-8 hours to obtain MWNT-OH. Then add the obtained 5g MWNT-OH powder to 15g DMF solution, reflux and stir at 110°C for half an hour, then add 1.5g KH-570 and continue stirring under this condition for 10 hours, and then filter the resulting mixed solution under reduced pressure. Then the obtained filter cake is washed repeatedly with DMF until the pH value of the solution is neutralized, and the finally obtained filter cake is baked in an oven at 110°C for 4-8 hours to obtain MWNT-N...

Embodiment 2

[0073] Example 2: Preparation of NiFeMWNTSAPO-11 catalyst

[0074] (1)NiFeMWNT-NH 2 The preparation steps: first add 10g of carbon nanotubes to 30g of 10% potassium hydroxide ethanol solution, reflux and stir at 80°C for 3-5 hours, then filter the resulting mixed solution under reduced pressure, and then filter the resulting mixture The cake is washed repeatedly with distilled water until the pH value of the solution is neutralized, and the finally obtained filter cake is baked in an oven at 110°C for 4-8 hours to obtain MWNT-OH. Then add the obtained 5g MWNT-OH powder to 15g DMF solution, reflux and stir at 110°C for half an hour, then add 1.5g KH-570 and continue stirring under this condition for 10 hours, and then filter the resulting mixed solution under reduced pressure. Then the obtained filter cake is washed repeatedly with DMF until the pH value of the solution is neutralized, and the finally obtained filter cake is baked in an oven at 110°C for 4-8 hours to obtain MWNT-N...

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Abstract

The invention belongs to the technical field of preparation of aviation kerosene, and particularly relates to a preparation method of a hydrodeoxidation isocatalyst, a hydrodeoxidation isocatalyst and application thereof. Carbon nanotubes are modified by nickel phthalocyanine so as to introduce Ni and N elements into the carbon nanotubes, iron phthalocyanine is added to cooperate with the nickel phthalocyanine, and the modified carbon nanotubes are added into a SAPO-11 synthetic gel in the form of a gel component, so that the synthesized SAPO-11 has more abundant pores and higher acid strength; and by introducing the Ni, Fe and N, the synthesized molecular sieve has the hydrodeoxidation activity, so that the synthesized NiFeCNTSAPO-11 can be directly used as a biological aviation kerosene catalyst for hydrogenating vegetable oil, thereby omitting the step of impregnating active components into the support and simplifying the preparation procedure. Besides, the hydrodeoxidation isocatalyst has high catalytic efficiency and high biological aviation kerosene yield (up to 78-85%).

Description

Technical field [0001] The invention belongs to the technical field of the preparation of aviation kerosene, and in particular relates to a preparation method of a hydrodeoxygenation isomerization catalyst, a hydrodeoxygenation isomerization catalyst and applications. Background technique [0002] With the continuous depletion of fossil energy such as petroleum and coal, global petroleum resources are gradually decreasing. Energy issues will become a vital issue hindering human development. Therefore, it will eventually lead to an energy crisis. Finding alternatives to traditional fossil energy has become the world The focus of attention. In order to alleviate the energy crisis, the development of renewable fuels is necessary. Biodiesel is a new renewable energy source. With the development of technology and society, it has attracted more and more attention. In recent years, methyl esterified vegetable oil prepared by acid, alkali, and enzyme catalysis has been used in differe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/85C10G3/00C11C3/12C11C3/14
CPCY02P30/20B01J29/85B01J2229/183C10G3/49C11C3/123C11C3/14
Inventor 李伟刘思阳关庆鑫何良年叶峰
Owner NANKAI UNIV
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