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Biomass oil hydrodeoxygenation catalyst and preparation method thereof

A deoxygenation catalyst and biomass oil technology, applied in the field of oil refining, can solve the problems of reducing activity, catalyst coking, large reaction energy consumption, etc., and achieve the effects of high specific surface and pore volume, improved dispersion, and wide adjustment range.

Active Publication Date: 2018-08-03
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High temperature reaction consumes a lot of energy, and it is prone to coking on the catalyst to reduce its activity; while at low temperature (≤250°C), the activity of this type of catalyst is low, resulting in a low deoxidation rate of the raw material

Method used

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  • Biomass oil hydrodeoxygenation catalyst and preparation method thereof
  • Biomass oil hydrodeoxygenation catalyst and preparation method thereof
  • Biomass oil hydrodeoxygenation catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A kind of preparation method of biomass oil hydrodeoxygenation catalyst is as follows:

[0023] a) Prepare a mixed aqueous solution containing 0.75mol urea and 1mol nickel nitrate, add 2.3mol ethyl orthosilicate to the solution, stir until uniform and transparent, add 6 grams of ammonium fluoride, stir well, and let it stand until a gel is formed , Put the gel in a closed container and heat it to 90°C, react for 2 hours, then dry at 80°C for 4 hours, dry at 140°C for 4 hours, and pulverize to obtain Ni / SiO 2 precursor;

[0024] b) Prepare a mixed aqueous solution containing 0.14mol ammonium metatungstate and 0.1mol cerium nitrate, then add 30 grams of ethylene glycol to the mixed solution, stir well, and then mix Ni / SiO 2 The precursor powder is added to this mixed solution, and it is sealed for 12 hours;

[0025] c) Put the above mixed system into a crystallization kettle, and conduct airtight crystallization at 140°C for 4 hours;

[0026] d) After the crystallizati...

Embodiment 2

[0029] The preparation method and parameters of the catalyst in this implementation are the same as in Example 1, except that the molar ratio of nickel and tungsten is adjusted to 2:1.

[0030] According to the XRF test, the parts by weight of each component of the catalyst are as follows: the content of nickel-tungsten composition is 48.9%; the content of cerium oxide is 3.9%, the content of fluorine is 1.5%, SiO 2 The content is 45.7%.

Embodiment 3

[0032] The preparation method and parameters of the catalyst in this implementation are the same as in Example 1, except that the content of the nickel-tungsten composition is adjusted to 30%.

[0033] According to the XRF test, the parts by weight of each component of the catalyst are as follows: the content of nickel-tungsten composition is 29.0%; the content of cerium oxide is 4.1%, the content of fluorine is 1.5%, SiO 2 The content is 65.4%.

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Abstract

The invention belongs to the technical field of oil refining, and in particular relates to a biomass oil hydrodeoxygenation catalyst and a preparation method thereof. The catalyst uses nickel-tungsten composition as the main active component, rare earth metals such as lanthanum and cerium as additives, silicon dioxide as a dispersion medium, and elemental fluorine is added to modify the catalyst. It is required that the content of the main active component nickel-tungsten composition in the catalyst is 15%-60%, the molar ratio of nickel-tungsten is 0.8-3:1, the content of rare earth metal is 3%-10%, and the nickel-tungsten composition and The mass ratio of the rare earth metal is 4-10:1, and the content of fluorine is 0.5%-3%. The mass ratio of the dispersion medium SiO2 to the active component NiW of the invention has a wide adjustment range, and can prepare a catalyst with a high content of the active component, breaking through the limitation of a conventional supported catalyst with a low content of the active component. The catalyst has high catalytic performance under normal pressure and low reaction temperature, and has broad application prospects.

Description

technical field [0001] The invention belongs to the technical field of oil refining, and in particular relates to a biomass oil hydrodeoxygenation catalyst and a preparation method thereof. Background technique [0002] Currently, there are various catalysts for catalytic hydrodeoxygenation of oxygenates in bio-oil. For these HDO catalysts, although the deoxygenation activity of the sulfide catalyst is better, in the process of using it to carry out the HDO reaction, because the sulfur content in the bio-oil is very low, the oxygen in it will destroy the sulfidation structure of the sulfide, thereby As a result, a small amount of sulfurizing agent must be added to maintain the catalytic activity of the sulfide, which inevitably brings a new source of sulfur pollution to the hydrogenated bio-oil. At the same time, due to the poor hydrogenation activity of the sulfide catalyst, the content of benzene and aromatics in the bio-oil product after deoxygenation is high; the HDO re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/888C10G45/08
CPCC10G45/08B01J23/888C10G2300/703C10G2300/70B01J35/394B01J35/615B01J35/633B01J35/647
Inventor 刘迪赵朋杉张成慧高军张治山
Owner SHANDONG UNIV OF SCI & TECH
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