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Hydrogenation catalyst suitable for production of aviation kerosene, preparation method and application thereof

A technology for hydrogenation catalysts and aviation kerosene, which is applied in the direction of catalyst activation/preparation, molecular sieve catalysts, chemical instruments and methods, etc. It can solve the problems of lack of large-scale industrial production, high cost of graphene preparation, and inability to crack cracking performance. , to achieve obvious thermal conductivity advantages, reduce the roasting stage, and achieve the effect of excellent thermal conductivity

Inactive Publication Date: 2017-10-20
WUHAN KAIDI ENG TECH RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the catalyst supports are all graphene materials. Since the graphene material is basically non-acidic, it is not conducive to the cracking reaction, and the preparation cost of single-layer and few-layer graphene is relatively high, and it does not have the conditions for large-scale industrial production. The complete use of graphene in the preparation of hydrocracking catalyst supports not only cannot achieve good cracking performance, but also has poor economic efficiency, but the use of graphene as an additive can significantly improve the activity, thermal conductivity and stability of the catalyst, so it is urgent Need to develop a catalyst for maximum production of bio-jet fuel from Fischer-Tropsch oil

Method used

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  • Hydrogenation catalyst suitable for production of aviation kerosene, preparation method and application thereof
  • Hydrogenation catalyst suitable for production of aviation kerosene, preparation method and application thereof
  • Hydrogenation catalyst suitable for production of aviation kerosene, preparation method and application thereof

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preparation example Construction

[0044] 1, the preparation method of graphite oxide, concrete steps are as follows:

[0045] 101) Weighing 1g of natural graphite, 1g of anhydrous sodium nitrate and 50ml of concentrated sulfuric acid with a mass fraction ≥ 75%;

[0046] 102) Slowly put natural graphite and anhydrous sodium nitrate into concentrated sulfuric acid placed in an ice bath, slowly add 6 g of potassium permanganate for oxidation treatment, and stir for 0.5-2 hours to obtain a mixed solution;

[0047] 103) Place the mixed solution in a water bath at a temperature of 35° C., stir for 2 hours, and slowly add 200 ml of deionized water to the mixed solution during the stirring process;

[0048] 104) Then place the mixed solution in an oil bath with a temperature of 98° C., continue to stir and react for 0.5 h, then dilute the mixed solution with deionized water to 400 ml to obtain a diluted solution;

[0049] 105) Slowly add 30ml of hydrogen peroxide with a mass fraction of 30% to the diluted solution, a...

Embodiment 1

[0058] Catalyst 1. preparation method, concrete steps are as follows:

[0059] 1) Take by weighing 0.5g of β molecular sieve, 5.8g of amorphous silica-alumina, 1.5g of macroporous alumina, 0.2g of graphite oxide and 0.1g of turmeric powder;

[0060] 2) macroporous alumina, β molecular sieve, amorphous silica-alumina, modified graphene and squash powder are uniformly mixed to obtain a mixture;

[0061] 3) Weighing 2g of small-pore alumina and 6g of nitric acid solution with a mass fraction of 4% and mixing them uniformly as a binder;

[0062] 4) The resulting mixture is impregnated with 20 mL of 0.02 mol / L PdCl 2 solution to obtain a mixed solution;

[0063] 5) Heat the obtained mixed solution in a water bath at a temperature of 75° C., and add 5 ml of 0.2 mol / L NaBH to the mixed solution under nitrogen protection 4 Carry out the reduction treatment for 4 hours until no more gas is released in the system to obtain a reaction slurry;

[0064] 6) After the reaction slurry is ...

Embodiment 2

[0068] Catalyst ② preparation method, concrete steps are as follows:

[0069] 1) Take by weighing 0.5g of β molecular sieve, 5.5g of amorphous silica-alumina, 1.5g of macroporous alumina, 0.5g of graphite oxide and 0.1g of turmeric powder;

[0070] 2) macroporous alumina, β molecular sieve, amorphous silica-alumina, modified graphene and squash powder are uniformly mixed to obtain a mixture;

[0071] 3) Weighing 2g of small-pore alumina and 6g of nitric acid solution with a mass fraction of 4% and mixing them uniformly as a binder;

[0072] 4) The resulting mixture was impregnated with 20 mL of 0.01 mol / L PtCl 4 solution to obtain a mixed solution;

[0073] 5) Heat the obtained mixed solution in a water bath at a temperature of 75° C., and add 5 ml of 0.2 mol / L NaBH to the mixed solution under nitrogen protection 4 Carry out the reduction treatment for 4 hours until no more gas is released in the system to obtain a reaction slurry;

[0074] 6) After the reaction slurry is ...

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Abstract

The invention discloses a hydrogenation catalyst suitable for production of aviation kerosene, a preparation method and application thereof. The hydrogenation catalyst comprises a carrier and a metal active component, and the metal active component is loaded on the carrier. The metal active component accounts for 0.05-1.15% by weight of a catalyst finished product, the metal active component is Pt or / and Pd, the carrier is prepared from the following raw materials by weight: 2-10 parts of a molecular sieve, 25-65 parts of amorphous silicon aluminum, 30-65 parts of alumina, 2-10 parts of graphite oxide and 0.5-1 part of sesbania cannabina powder. The raw materials are dipped in the active component, then reduction treatment and molding activation are carried out to obtain the hydrocracking catalyst, the disperse state of the active component is improved, and the active component utilization rate is increased, thus increasing the number of catalyst active centers. Also the carrier forming roasting stage is eliminated, and the preparation process is simplified, thus lowering the cost of actual production.

Description

technical field [0001] The invention relates to the field of catalysts, in particular to a hydrogenation catalyst suitable for producing aviation kerosene and its preparation method and application. Background technique [0002] The most notable features of the low-temperature Fischer-Tropsch synthesis reaction are wide product distribution, low product selectivity, low content of isomer products, and most of the products are straight-chain hydrocarbons. The above characteristics lead to very low octane number of Fischer-Tropsch synthetic gasoline fraction, high freezing points of kerosene fraction and diesel fraction, which limit the use of Fischer-Tropsch synthetic oil as fuel oil to a certain extent. [0003] Low-temperature Fischer-Tropsch synthetic paraffin can be hydrocracked and isomerized to produce aviation kerosene, and the quality of the resulting aviation kerosene can be improved by adjusting the ratio of high-carbon isoparaffins to normal paraffins. Since the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/74B01J37/16C10G47/18C10G49/08
Inventor 王春锋石友良许莉赖波明卫星杨伟光赵焘
Owner WUHAN KAIDI ENG TECH RES INST CO LTD
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