Catalyst carrier for preparing high energy density fuel, preparation method and application

A technology with high energy density and catalyst, which is applied in the direction of catalyst carrier, catalyst activation/preparation, chemical instruments and methods, etc., can solve the problems of not having high specific surface area and single catalyst function, so as to improve the performance of hydrodeoxygenation and benzene Effects of ring saturation, increased added value, and high specific surface area

Active Publication Date: 2022-05-20
ZHEJIANG NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] Therefore, the technical problem to be solved by the present invention is to overcome the single function of the catalyst in the prior art (for example, it cannot have high specific surface area, suitable acid active center and catalytic hydrogenation active center, etc.), and it cannot convert lignin into high energy density Defects such as fuels, thereby providing a catalyst carrier for preparing high energy density fuels, preparation methods and applications

Method used

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  • Catalyst carrier for preparing high energy density fuel, preparation method and application
  • Catalyst carrier for preparing high energy density fuel, preparation method and application
  • Catalyst carrier for preparing high energy density fuel, preparation method and application

Examples

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Embodiment 1-9

[0065] Examples 1-9 provide one Nb / ZrO, respectively 2 Catalyst carrier and preparation method thereof, the preparation method comprises the following steps,

[0066] (1) Zirconium nitrate, stabilizer and 100mL ethanol are mixed to form solution A; niobium oxalate and 100mL aqueous oxalic acid solution are mixed to form solution B; template agent and 100mL ethanol are mixed to form solution C;

[0067] (2) Solution A and solution B are added to solution C at the same time, to obtain a mixed solution, add ammonia in the mixed solution to adjust the pH to 3-6, stir the reaction at 25 ° C, take it out and filter, dry it at 100 ° C for 10h, and then calcinate for 6h to give Nb-doped ZrO 2 Catalyst carrier, denoted Nb / ZrO 2 。

[0068] The difference between Examples 1-9 is that the molar concentration of zirconium ions in the mixed solution in the preparation catalyst support, the mass concentration of the stabilizer in the mixed solution, the molar concentration of niobium ions in th...

Embodiment 10-20

[0075] Examples 10-20 respectively provide a method for preparing a high energy density fuel, comprising the following steps,

[0076] The lignin and catalyst were dispersed in 100mL of water, and then placed in a 300mL high-pressure reactor, into which 0.5-5MPa of hydrogen was poured, heated to 250-350 °C, stirred reaction for 0.5-12h, after the end of the reaction, filtration, rotary distillation to remove the solvent, to obtain high energy density fuel.

[0077] Wherein, the difference between Example 10-20 is that the amount of lignin, the amount of catalyst, the type of catalyst, the hydrogen pressure, the reaction temperature, the reaction time are different, the process parameters in Example 10-20 are shown in Table 2.

[0078] Table 2 Process parameters in Example 10-20

[0079]

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Abstract

The invention belongs to the technical field of lignin preparation by heterogeneous catalytic conversion, and in particular relates to a catalyst carrier for preparing high energy density fuel, a preparation method and application. The application of niobium-doped zirconia in the preparation of high-energy-density fuels. Niobium-doped zirconia allows part of the niobium to enter the zirconia lattice to replace part of the zirconium. The obtained carrier can make the catalyst have a more suitable acid strength and acid content. , high specific surface area and hydrogenation activity, the catalyst can be directly used to prepare high-energy-density fuels from lignin, and convert lignin into bicycloalkanes and tricycloalkanes in one step without adding any inorganic acids and bases Such high energy density fuels greatly increase the added value of lignin application.

Description

Technical field [0001] The present invention belongs to the field of heterogeneous catalytic conversion of lignin technology, specifically relates to a catalyst support for the preparation of high energy density fuel and preparation method and application. Background [0002] High energy density fuel generally refers to a density greater than 0.8g / cm composed of a variety of hydrocarbons 3 Fuel, mainly used in modern long-range, high-speed aircraft and advanced missile systems and other aircraft, is of great significance to improve the performance of aircraft, missiles and other aircraft, high energy density fuel by more and more researchers pay attention to. High energy density fuel is usually bicyclic, three-ring, tetracyclic and other planar naphthalkrafins or adamantane, high-tension cage and other stereoscopic naphthalkies, which have high fuel density and volume combustion calorific value, volume combustion calorific value is generally greater than 35MJ / L. [0003] At prese...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/847B01J23/20B01J35/10B01J32/00B01J37/00C10L1/04
CPCB01J23/8474B01J23/20B01J35/1019B01J37/0018C10L1/04Y02P30/20
Inventor 马睿王钰张歆涂高美卢信清傅仰河王宁伟朱伟东
Owner ZHEJIANG NORMAL UNIVERSITY
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