Deoxidation and isomerization catalyst and preparation method and application thereof

A catalyst and isomerization technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc., can solve the problem of temperature runaway, deactivation, bed heat transfer effect Bad question

Active Publication Date: 2021-11-12
FUZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The traditional hydrodeoxygenation process is mainly carried out on a fixed bed, but due to the poor heat transfer effect between the beds, a large amount of heat will be generated during the hydrodeoxygenation process, which can easily lead

Method used

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  • Deoxidation and isomerization catalyst and preparation method and application thereof
  • Deoxidation and isomerization catalyst and preparation method and application thereof
  • Deoxidation and isomerization catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] The modification scheme described in this embodiment is prepared from the following raw materials:

[0035] Zirconium oxychloride, ZrOCl 2 ·H 2 o

[0036] Phosphoric acid, H 3 PO 4

[0037] 0.1mol / L ammonium molybdate tetrahydrate aqueous solution

[0038] where ZrOCl 2 ·8H 2 O, 41.8g, phosphoric acid is 4.84g, and the mass ratio of phosphorus to zirconium is 1:3.

[0039] Modification method described in the present embodiment is:

[0040] (1) Dissolving zirconium oxychloride in a certain amount of deionized water, and reacting in a hydrothermal kettle, the reaction temperature is 150° C., and the hydrothermal time is 6 hours.

[0041] (2) Add a certain amount of ammonia water to the product obtained after hydroheating in step (1) to make its pH value 8.8. The obtained white precipitate was centrifuged and washed. And dried at 110°C for 12h.

[0042] (3) Roast the product obtained in step (2) in a muffle furnace at 350°C for 4 hours, and cool to obtain the ...

Embodiment 2

[0049]The modification scheme described in this embodiment is prepared from the following raw materials:

[0050] Zirconium oxychloride, ZrOCl 2 ·H 2 o

[0051] Phosphoric acid, H 3 PO 4

[0052] 0.1mol / L ammonium molybdate tetrahydrate aqueous solution

[0053] where ZrOCl 2 ·8H 2 O, 41.8g, phosphoric acid is 2.91g, and the mass ratio of phosphorus to zirconium is 1:5.

[0054] Modification method described in the present embodiment is:

[0055] (1) Dissolving zirconium oxychloride in a certain amount of deionized water, and reacting in a hydrothermal kettle, the reaction temperature is 150° C., and the hydrothermal time is 6 hours.

[0056] (2) Add a certain amount of ammonia water to the product obtained after hydroheating in step (1) to make its pH value 8.8. The obtained white precipitate was centrifuged and washed. And dried at 110°C for 12h.

[0057] (3) The product obtained in step (2) was calcined in a muffle furnace at 450° C. for 4 hours and cooled to ob...

Embodiment 3

[0064] The modification scheme described in this embodiment is prepared from the following raw materials:

[0065] Zirconium oxychloride, ZrOCl 2

[0066] Phosphoric acid, H 3 PO 4

[0067] 0.1mol / L ammonium molybdate tetrahydrate aqueous solution

[0068] where ZrOCl 2 ·8H 2 O, 41.8g, phosphoric acid is 2.08g, and the mass ratio of phosphorus to zirconium is 1:7.

[0069] Modification method described in the present embodiment is:

[0070] (1) Dissolving zirconium oxychloride in a certain amount of deionized water, and reacting in a hydrothermal kettle, the reaction temperature is 150° C., and the hydrothermal time is 6 hours.

[0071] (2) Add a certain amount of ammonia water to the product obtained after hydroheating in step (1) to make its pH value 8.8. The obtained white precipitate was centrifuged and washed. And dried at 110°C for 12h.

[0072] (3) The product obtained in step (2) was calcined in a muffle furnace at 350° C. for 4 hours to obtain the carrier X...

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Abstract

The invention discloses a deoxidation and isomerization catalyst . A preparation method of the deoxidation and isomerization catalyst comprises the steps of hydrothermal reaction, dipping, alcohol washing, drying and the like, and the obtained molybdenum oxide/modified nano oxide composite catalyst can be used for deoxidation and isomerization of biomass oil. The catalyst comprises zirconium oxide with different crystal forms, an additive and an active component, wherein the additive is one or more of phosphorus compounds; the active component is one or more of a molybdenum compound and a tungsten compound; the number of Brphinsted acid sites and the acid strength can be increased through the phosphorus modified oxide, so that the hydrodeoxygenation and isomerization performance of the catalyst is improved; molybdenum or tungsten is introduced as an active center, sulfide obtained after vulcanization and molybdenum or tungsten oxide which is not vulcanized on the interface of the carrier and molybdenum sulfide synergistically provide a catalytic active center for hydrodeoxygenation and isomerization.

Description

technical field [0001] The invention belongs to the field of petrochemical industry, and in particular relates to a catalyst for deoxygenation and isomerization, a preparation method and application thereof. Background technique [0002] Biodiesel is a kind of diesel (liquid fuel) processed from biomass resources as raw material. It has excellent compatibility with diesel, and the sulfur content in biodiesel is low, so the emission of sulfur dioxide and sulfide can be reduced by about 30% ( 70% when there is a catalyst); biodiesel does not contain aromatic alkanes that will pollute the environment, so the exhaust gas is less harmful to the human body than diesel; in addition, biodiesel has high biodegradability and has little harm to the environment in case of leakage. Low-temperature engine starting performance, lubricating performance, safety performance and combustion performance are relatively good, and can be mixed with national standard diesel or used alone for automob...

Claims

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Application Information

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IPC IPC(8): B01J23/28B01J23/30B01J27/188B01J27/19B01J37/02B01J37/20C10L1/02C11C3/12C11C3/14
CPCB01J23/30B01J23/28B01J27/19B01J27/188B01J37/0207B01J37/20C11C3/126C11C3/14C10L1/02
Inventor 曹彦宁余攀结江莉龙黄宽马永德蔡镇平
Owner FUZHOU UNIVERSITY
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