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MgFe hydrotalcite-based catalyst and application thereof in production of biodiesel by hydrodeoxygenation in suspended bed

A biodiesel, talc-based technology, used in catalyst activation/preparation, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of low freezing point and high cetane number of biodiesel , complex production process and other problems

Active Publication Date: 2021-05-18
FUZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Invention patent (CN 103756794 B) discloses a method for producing second-generation biodiesel by hydrogenation of waste oil as raw material. Under the action of transition metal phosphides, biodiesel is obtained through hydrodeoxygenation reaction. The biodiesel produced is ten High hexane number and low freezing point, but complex production process and high energy consumption
Invention patent (CN 111205931A) discloses a method for catalytic production of biodiesel from calcined Ca-Al hydrotalcite, which uses vegetable oil, dimethyl carbonate and methanol as raw materials for reaction, and the product yield is above 80%, but A certain amount of glycerol is still present
In order to achieve this effect, the present invention provides a layered porous magnesium-iron metal oxide material to prepare biodiesel. The preparation process of this material is green and simple, and the raw material is cheap. It has very important guiding significance for the production of biodiesel and However, there are few reports on the application of this layered porous magnesium-iron metal material in the field of suspension bed hydrodeoxygenation to produce biofuel oil.

Method used

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  • MgFe hydrotalcite-based catalyst and application thereof in production of biodiesel by hydrodeoxygenation in suspended bed
  • MgFe hydrotalcite-based catalyst and application thereof in production of biodiesel by hydrodeoxygenation in suspended bed
  • MgFe hydrotalcite-based catalyst and application thereof in production of biodiesel by hydrodeoxygenation in suspended bed

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Experimental program
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Effect test

Embodiment 1

[0032] 0.03 mol MgCl 2 •6H 2 O and 0.01 mol FeCl 3 •6H 2 O was dissolved in 100 ml deionized water to form a 0.4mol / L A solution, and 0.08 mol NaOH, 0.005 mol NaOH 2 CO 3 Add to 80 ml of deionized water to obtain a 1.0mol / L clear B solution, under the condition of vigorous stirring (800 rpm), slowly add the obtained B solution to the A solution drop by drop to form a uniform suspension, and then Stir vigorously at room temperature for 1 h, then transfer the aged suspension to a stainless steel reactor with a polytetrafluoroethylene liner, statically crystallize at 140 °C for 12 h, take it out and cool to room temperature, the obtained The precipitate was filtered and washed, and then dried in an oven at 120 °C to constant weight to obtain the precursor of binary magnesium-iron hydrotalcite, and finally the obtained binary magnesium-iron hydrotalcite precursor was placed in a muffle furnace and calcined at 500 °C for 6 h to obtain a layered porous magnesium-iron hydrotalci...

Embodiment 2

[0035] 0.027 mol MgCl 2 •6H 2 O and 0.013 mol FeCl 3 •6H 2 O was dissolved in 100 ml deionized water to form a 0.4mol / L A solution, and 0.08 mol NaOH, 0.0067 mol Na 2 CO 3 Add to 80 ml of deionized water to obtain a 1.0mol / L clear B solution, under the condition of vigorous stirring (800 rpm), slowly add the obtained B solution to the A solution drop by drop to form a uniform suspension, and then Stir vigorously at room temperature for 1 h, then transfer the aged suspension to a stainless steel reactor with a polytetrafluoroethylene liner, statically crystallize at 140 °C for 12 h, take it out and cool to room temperature, The resulting precipitate was filtered and washed, and dried in an oven at 120 °C to constant weight to obtain a binary magnesium-iron hydrotalcite precursor. Finally, the obtained binary magnesium-iron hydrotalcite precursor was placed in a muffle furnace and calcined at 500 °C After 6 h, the layered porous magnesium-iron hydrotalcite-based catalyst wa...

Embodiment 3

[0038] 0.02 mol MgCl 2 •6H 2 O and 0.02 mol FeCl 3 •6H 2 O was dissolved in 100 ml deionized water to form a 0.4mol / L A solution, and 0.08 mol NaOH, 0.01 mol NaOH 2 CO 3 Add to 80 ml of deionized water to obtain a 1.0mol / L clear B solution, under the condition of vigorous stirring (800 rpm), slowly add the obtained B solution to the A solution drop by drop to form a uniform suspension, and then Stir vigorously at room temperature for 1 h, then transfer the aged suspension to a stainless steel reactor with a polytetrafluoroethylene liner, statically crystallize at 140 °C for 12 h, take it out and cool to room temperature, the obtained The precipitate was filtered and washed, and then dried in an oven at 120 °C to constant weight to obtain the precursor of binary magnesium-iron hydrotalcite, and finally the obtained binary magnesium-iron hydrotalcite precursor was placed in a muffle furnace and calcined at 500 °C for 6 h to obtain a layered porous magnesium-iron hydrotalcit...

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Abstract

The invention discloses a layered porous magnesium iron hydrotalcite-based catalyst (MgFe-LMOs) and application thereof in production of biodiesel by hydrodeoxygenation in a suspended bed. The preparation method comprises the following steps: firstly, preparing MgFe-LDHs binary hydrotalcite with an intercalation structure by adopting a hydrothermal-co-precipitation method, and then roasting the MgFe-LDHs binary hydrotalcite in an air atmosphere to obtain the layered porous magnesium-iron catalyst material. The catalyst is applied to production of biodiesel through hydrodeoxygenation in a suspended bed with palm oil as raw material oil, the catalyst has high hydrodeoxygenation reaction activity and selectivity, and products of the hydrodeoxygenation mainly comprise C10-C18 alkanes and have a high combustion heat value, so that the catalyst has a good application prospect in industry.

Description

technical field [0001] The invention belongs to the technical field of energy and chemical engineering, and in particular relates to a layered porous magnesium-iron hydrotalcite-based catalyst and its application in the production of biodiesel by hydrogenation and deoxygenation in a suspended bed. Background technique [0002] With the increasing depletion of conventional fossil energy, increasing air pollution, and increasingly stringent requirements for greenhouse gas emissions in various countries, the world is facing dual challenges from the world's response to climate change and the search for alternatives to fossil energy. In order to solve environmental and energy problems and realize the sustainable development of human society, seeking and developing new energy sources has become a research hotspot. In order to achieve the purpose of reducing emissions and costs, and reduce the harm of conventional fossil energy to the living environment, renewable energy has receiv...

Claims

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Application Information

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IPC IPC(8): B01J23/745B01J35/00B01J35/02B01J35/10B01J37/03B01J37/08B01J37/10C10G3/00
CPCB01J37/10B01J37/03B01J37/082B01J23/78C10G3/45C10G2400/04B01J35/394B01J35/00B01J35/30B01J35/60Y02P30/20Y02E50/10
Inventor 鲍晓军郑建伟崔勍焱王鹏照白正帅王廷海朱海波
Owner FUZHOU UNIVERSITY
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