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Double-activity Ni2P/Zr-SBA-15 catalyst and preparation method and application thereof

A zr-sba-15, catalyst technology, applied in physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc. It has advantages and cannot be used as aviation kerosene, etc., and achieves the effect of high hydrodeoxygenation and isomerization activity, good industrial application prospects, and rich products.

Active Publication Date: 2018-12-21
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the most commonly used carrier for catalysts is γ-Al 2 o 3 The carrier, the specific surface area of ​​the carrier is small, the loading active components and the reaction sites provided are less, and the γ-Al 2 o 3 It has strong acidity, but the higher the acidity, the easier it is to deposit carbon in the HDO reaction; under high temperature and pressure, γ-Al 2 o 3 A hydration reaction will also occur, further affecting the catalytic performance
In addition, metal Ni is cheap and has a good catalytic effect, but it is easy to agglomerate on the carrier, which affects the catalytic effect.
[0005] Patent CN201511002461.3 provides a Ni2P / Zr-MCM-41 catalyst, which can catalyze bio-oil to prepare biofuel. 2 o 3 Compared with the support, the Zr-MCM-41 support is more acidic than γ-Al 2 o 3 Reduced to some extent, can make the catalyst less prone to carbon deposition, but it only has a good catalytic effect in hydrodeoxygenation, and has no advantage in isomerization catalytic effect. The content of isoparaffins, cycloalkanes and aromatics in the obtained biofuel is low, and it cannot be used as aviation kerosene use

Method used

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  • Double-activity Ni2P/Zr-SBA-15 catalyst and preparation method and application thereof
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  • Double-activity Ni2P/Zr-SBA-15 catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] 1. Preparation of Zr-SBA-15 carrier

[0039] Dissolve template P123 in water and diluted HCl solution, stir until completely dissolved, after complete dissolution, add zirconium nitrate and ethyl orthosilicate, then raise the temperature to 38°C, crystallize for 48 hours, and wash the obtained sample with water until neutral Afterwards, dry at room temperature. Then the obtained sample was placed in a muffle furnace, heated to 550°C in an air atmosphere, and roasted for 6 hours to remove the surfactant to obtain a Zr-SBA-15 carrier, template agent P123: water: HCl: ethyl orthosilicate : The molar ratio of zirconium nitrate is 0.0003:0.83:1.64:1:0.1;

[0040] 2. Ni 2 Preparation of P / Zr-SBA-15 Catalyst Precursor

[0041] Weigh nickel nitrate and diammonium hydrogen phosphate according to the molar ratio of Ni:P=1, mix them, 2 P 20wt% load was formulated into an aqueous solution, and then the Zr-SBA-15 carrier powder prepared above was added to the aqueous solution, i...

Embodiment 2

[0045] 1. Preparation of Zr-SBA-15 carrier: Same as Example 1.

[0046] 2. Ni 2 Preparation of P / Zr-SBA-15 catalyst precursor: same as Example 1.

[0047] 3. Ni 2 Preparation of P / Zr-SBA-15 Catalyst

[0048] will Ni 2 The P / Zr-SBA-15 catalyst precursor is reduced with hydrogen. The specific operation is: first raise it to 250°C at 10°C / min in a hydrogen atmosphere (flow rate 100mL / min), and then rise to 500°C at 5°C / min. Then increase to 800°C at 1°C / min and keep at 800°C for 2h. After hydrogen reduction, the product was cooled to room temperature and switched to a low concentration of O 2 After passivation for 2 hours, Ni with a loading capacity of 20wt% was obtained 2 P / Zr-SBA-15 catalyst.

Embodiment 3

[0050] 1. Preparation of Zr-SBA-15 carrier: Same as Example 1.

[0051] 2. Ni 2 Preparation of P / Zr-SBA-15 catalyst precursor: same as Example 1.

[0052] 3. Ni 2 Preparation of P / Zr-SBA-15 Catalyst

[0053] will Ni 2 The P / Zr-SBA-15 catalyst precursor is reduced with hydrogen. The specific operation is: first raise it to 250°C at 10°C / min in a hydrogen atmosphere (flow rate 100mL / min), and then rise to 500°C at 5°C / min. Then increase to 900°C at 1°C / min and keep at 900°C for 2h. After hydrogen reduction, the product was cooled to room temperature and switched to a low concentration of O 2 After passivation for 2 hours, Ni with a loading capacity of 20wt% was obtained 2 P / Zr-SBA-15 catalyst.

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Abstract

The invention discloses a double-activity Ni2P / Zr-SBA-15 catalyst and a preparation method and application thereof. The active component of the catalyst is Ni2P, and a carrier is Zr-SBA-15. The double-activity Ni2P / Zr-SBA-15 catalyst has the advantages that the preparation is simple, and the price is low; the activities of hydrodeoxygenation and isomerization are high, the anti-carbon accumulationability is strong, the oxygen removal rate reaches 98% or above, and the curcas oil with low price can be converted into biofuel with high content of straight-chain paraffin, high calorific heat andhigh price; after reaction is finished, the coking rate of the catalyst is lower than 1.66%; the main components of the biofuel are petroleum diesel and aviation kerosene, the combustion property is good, the stability is high, the petroleum diesel and aviation kerosene can be replaced, and the good industrial application prospect is realized.

Description

technical field [0001] The present invention relates to a kind of Ni with dual catalytic active centers, and dual activity of hydrodeoxygenation and isomerization 2 The P / Zr-SBA-15 catalyst and its preparation method also relate to the application of the catalyst to catalyze bio-oil to prepare bio-fuel. Background technique [0002] With the lack of petroleum energy and the increasingly serious environmental pollution, renewable green energy has attracted more and more attention and research. Among them, the fuel derived from bio-oil has low sulfur and nitrogen content, and only produces very little SO during combustion. 2 and NO 2 , renewable and other advantages, is considered to be an ideal clean energy. However, the oxygen content in unrefined vegetable oil is as high as 50%, which seriously affects the combustion value, transportation and storage of oil products. This kind of fuel, which is similar to the components of petrochemical diesel, is the second-generation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/03C10G3/00
CPCB01J29/0333B01J2229/18C10G3/45C10G2300/1014Y02P30/20
Inventor 李进曹阳
Owner HAINAN UNIVERSITY
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