Bimetal supported catalyst, preparation method thereof and application of bimetal supported catalyst in preparation of biological aviation kerosene through hydrogenation conversion of palm oil

A technology of supported 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 high cost, high price, and poor stability of precious metals, and achieve green and simple preparation processes and promising application prospects Good, synergistic effect

Pending Publication Date: 2022-05-24
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

It uses noble metals Pt, Pd, Ru as active components loaded on the composite carrier Beta-Al 2 o 3 In general, the conversion rate of oil and fat can reach 100%, and the yield of aviation kerosene components can reach 72.3%. Although noble metal catalysts show excellent hydrodeoxygenation activity and product selectivity, the cost of noble metals is high, and the reaction environment Impurities, water, etc. are sensitive, easy to be poisoned and deactivated, which is not conducive to the wide application in the hydrodeoxygenation production of bio-aviation kerosene industry
[0006] The invention patent (CN111250156A) discloses a preparation method of a catalyst supported by nickel phosphide on a SAPO-11 carrier, which has high hydrogenation activity and isoparaffin selection in the hydrodeoxygenation-isomerization reaction of fatty acid methyl ester It has excellent sulfur resistance and water resistance, but the preparation process of phosphide catalysts is relatively uncontrollable, easy to oxidize in the air, and has poor stability
However, the carrier used in the preparation of the above catalyst is alumina, which does not have the B acid and pore structure required for the isomerization cracking reaction, and is not suitable for the hydrogenation conversion of palm oil with complex components to prepare bio-aviation kerosene.
[0008] Invention patent (CN105921168A) discloses a preparation method of a hydrodeoxygenation isomerization catalyst NiFeCNTSAPO-11 and its application in the hydrogenation of vegetable oil into bio-aviation kerosene. The yield of bio-jet kerosene can reach 78-85%, but The catalyst preparation process is relatively complicated, and the nickel salt and iron salt used are organic phthalocyanine salts, which are expensive and not environmentally friendly, which is not conducive to industrial production and application

Method used

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  • Bimetal supported catalyst, preparation method thereof and application of bimetal supported catalyst in preparation of biological aviation kerosene through hydrogenation conversion of palm oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Dissolve 0.009 mol of nickel chloride hexahydrate and 0.001 mol of ferric chloride hexahydrate in 100 mL of deionized water with common stirring to form solution A, then add 5.3 g of Beta molecular sieve powder to solution A, and stir at a certain speed to form a solution. Suspension B. Then prepare 0.05mol / L NaOH alkaline solution C, add it dropwise to suspension B under the stirring speed of 800 rpm and 30 °C water bath, adjust the pH to 8.5, and let stand for aging after 6 h in water bath. After the solid was ground into powder, it was calcined in a muffle furnace at 500 °C for 4 h, and reduced in a tube furnace at 600 °C for 3 h to obtain bimetallic NiFe / Beta. catalyst.

[0033] Take 50 g of palm oil feedstock oil and 3.0 g of the prepared bimetallic NiFe / Beta catalyst, put it into a high temperature and high pressure reactor, purge the air in the reactor and the pipeline with nitrogen, replace the residual nitrogen with hydrogen, and then add it to the reaction ve...

Embodiment 2

[0035] Dissolve 0.008 mol nickel chloride hexahydrate and 0.002 mol ferric chloride hexahydrate together in 100 mL deionized water with stirring to form solution A, then add 5.2 g Beta molecular sieve powder to solution A, stirring at a speed of 800 rpm , 30 ℃ water bath conditions, dropwise added it into the suspension B, adjust the pH to 8.5, after 6 h in the water bath, let stand for 6 h, filter and wash to neutrality, dry at 80 ℃ for 8 h, After the solid was ground into powder, it was calcined in a muffle furnace at 500 °C for 4 h, and reduced in a tube furnace at 600 °C for 3 h to obtain a single-metal NiFe / Beta catalyst.

[0036] Take 50 g of palm oil feedstock oil and 3.0 g of the prepared bimetallic NiFe / Beta catalyst, put it into a high temperature and high pressure reactor, purge the air in the reactor and the pipeline with nitrogen, replace the residual nitrogen with hydrogen, and then add it to the reaction vessel. The kettle was filled with ordinary hydrogen to ca...

Embodiment 3

[0038] Dissolve 0.007 mol nickel chloride hexahydrate and 0.003 mol ferric chloride hexahydrate in 100 mL of deionized water with stirring together to form solution A, then add 5.2 g Beta molecular sieve powder to solution A, stirring at a speed of 800 rpm , 30 ℃ water bath conditions, dropwise added it into the suspension B, adjust the pH to 8.5, after 6 h in the water bath, let stand for 6 h, filter and wash to neutrality, dry at 80 ℃ for 8 h, After the solid was ground into powder, it was calcined in a muffle furnace at 500 °C for 4 h, and reduced in a tube furnace at 600 °C for 3 h to obtain a single-metal NiFe / Beta catalyst.

[0039] Take 50 g of palm oil feedstock oil and 3.0 g of the prepared bimetallic NiFe / Beta catalyst, put it into a high temperature and high pressure reactor, purge the air in the reactor and the pipeline with nitrogen, replace the residual nitrogen with hydrogen, and then add it to the reaction vessel. The kettle was filled with ordinary hydrogen to...

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Abstract

The invention designs and prepares a non-noble bimetal supported catalyst suitable for preparing biological aviation kerosene through grease hydro-conversion, and the non-noble bimetal supported catalyst is applied to palm oil hydrodeoxygenation and cracking/isomerization reaction to produce biological aviation kerosene in a C8-C16 hydrocarbon range. According to the bimetal supported catalytic material prepared by taking nickel as a main metal, adding a second transition metal and supporting the nickel on an acidic carrier in an alkali liquor precipitation manner, the metal is highly dispersed on the surface of the carrier, the hydrodeoxygenation performance of the catalyst is greatly improved, and in hydrodeoxygenation and cracking isomerization reactions of palm oil, the grease conversion rate reaches up to 100%, and the grease conversion rate reaches up to 100%. The yield of the biological aviation kerosene can reach 60%, and the carbon loss is reduced, so that the method has a good application prospect in a process for producing the biological aviation kerosene through oil hydrogenation conversion.

Description

technical field [0001] The invention relates to the preparation of a hydrodeoxygenation catalyst, which is mainly used for one-step hydrodeoxygenation cracking and isomerization of oil to produce biological aviation kerosene, and belongs to the technical field of energy and chemical industry. Background technique [0002] As one of the major carbon producers in the 21st century, the aviation industry is under the dual pressure of the fossil energy crisis and carbon reduction goals, it is imperative to develop sustainable aviation fuel. Traditional aviation kerosene is a product processed by hydrocracking and catalytic cracking of petroleum. The main component is a carbon number ranging from C. 8 ~C 16 The normal paraffins, branched isoparaffins, naphthenes and a small amount of aromatic hydrocarbons, while bio-aviation kerosene is directly or indirectly converted from biomass raw materials. On the basis that the combustion calorific value, energy density, condensation poin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/76B01J29/78B01J37/18C10G3/00C11C3/12
CPCB01J29/7615B01J29/7815B01J37/18C10G3/50C10G3/49C11C3/123B01J2229/186Y02P30/20
Inventor 崔勍焱杨卓莹王廷海袁珮张宏伟
Owner FUZHOU UNIV
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