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Synthesis reaction catalyst for loading type alkali metal biodiesel oil

A biodiesel, synthesis reaction technology, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, catalyst activation/preparation, etc., can solve the problem of shortening catalyst service life, loss of catalytic activity, affecting catalysts Reuse and other problems, to achieve the effect of easy separation, accelerated transesterification, and reduced operating costs and environmental costs

Inactive Publication Date: 2007-11-14
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the continuous passivation of the transesterification reaction will cause the gradual loss of catalytic activity, shorten the service life of the catalyst, and then affect the reuse of the catalyst.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Weigh LiNO 3 4.7467g, poured into a beaker, dissolved in 50ml deionized water, to get LiNO 3 solution. Weigh 9.55g CaO and pour it into the solution. After vigorously stirring for 2 h, place the beaker in an electric heating mantle to heat, and stir while evaporating until the solution is evaporated to dryness. Finally, it was dried overnight in an oven at 100°C. The dried powder aggregates are ground into powders less than 100 meshes to obtain the alkali metal supported transesterification catalyst Li / CaO.

[0013] In a 250ml flask, add 60ml of dried soybean oil, preheat to about 65°C in a water bath, add 15ml of methanol, catalyst Li / CaO 1.1076g (2% of oil weight), stir and reflux in a 65°C water bath. Keep the reflux reaction for 3.5 hours, and the reaction ends. Excess methanol is distilled off, and the reaction liquid phase is filtered while hot to separate the catalyst. The upper product is biodiesel, and the lower product is glycerol. The fatty acid methyl...

Embodiment 2

[0017] Weigh NaNO 3 6.0839g, poured into a beaker, dissolved in 100ml deionized water, to get NaNO 3 solution. Weigh 10.24g CaO and pour it into the solution. After vigorously stirring for 2 h, place the beaker in an electric heating mantle to heat, and stir while evaporating until the solution is evaporated to dryness. Finally, it was dried overnight in an oven at 100°C. Take out and grind into powder less than 100 mesh.

[0018] In a 250ml flask, add 60ml of dried soybean oil, preheat to about 65°C in a water bath, add 15ml of methanol, catalyst Na / CaO 1.1074g (2% of oil weight), stir and reflux in a 65°C water bath. After the reflux reaction was maintained for 3 hours, the reaction ended, excess methanol was distilled off, the reaction liquid phase was filtered while hot, and the catalyst was separated, and then the filtrate was poured into a separatory funnel and allowed to stand overnight for stratification. The upper product is biodiesel, and the lower product is g...

Embodiment 3

[0020] Weigh KNO 3 10.0922g, pour into a beaker, dissolve in 100ml deionized water, get KNO 3 solution. Weigh 10.24g CaO and pour it into the solution. After vigorously stirring for 2 h, place the beaker in an electric heating mantle to heat, and stir while evaporating until the solution is evaporated to dryness. Finally, it was dried overnight in an oven at 100°C. Take out and grind into powder less than 100 mesh.

[0021] In a 250ml flask, add 60ml of dried soybean oil, preheat to about 65°C in a water bath, add 15ml of methanol, catalyst K / CaO 1.1074g (2% of oil weight), stir and reflux in a 65°C water bath. Keep the reflux reaction for 4 hours and the reaction ends, distill off excess methanol, filter the reaction liquid phase while it is hot, separate the catalyst, and then pour the filtrate into a separatory funnel and let it stand overnight to separate layers. The upper product is biodiesel, and the lower product is glycerol. The content of fatty acid methyl este...

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PUM

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Abstract

A carried alkali-metal catalyst for synthesizing biologic diesel oil by exchange reaction of the fatty-acid ester is prepared from alkali-metal salt (LiNO3, NaNO3, or KNO3) or alkali-metal hydroxide (LiOH, NaOH, or KOH) and alkali-earth metal oxide (Cao, SrO, or BaO) through preparing the salt (or alkali)-soluble aqueous solution of alkali-metal salt (or hydroxide), immersing alkali-earth metal oxide in it, ageing, evaporating solvent, baking and grinding.

Description

technical field [0001] The invention relates to a catalyst, in particular to a solid base catalyst which can catalyze the transesterification reaction between fatty acid glyceride and methanol to synthesize biodiesel below the boiling point of methanol. Background technique [0002] Using biomass raw materials such as soybean oil, rapeseed oil, rice bran oil, raw oil from genetically modified oil crops, waste oil from the catering industry, and industrial oil residues from a wide range of sources, fatty acid methyl esters prepared by transesterification with methanol are used as mineral diesel fuel. Alternative fuels have the advantages of good power performance, safe use, low pollutant emission indicators and renewable resources. Compared with the acid-catalyzed system, the base-catalyzed transesterification has the advantages of high specific activity and lower alcohol-to-ester ratio. The separation and purification process still inevitably increases operating costs and e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/02B01J27/25B01J37/02C07C67/03
CPCY02E50/13Y02E50/10
Inventor 杨乐夫蔡俊修蔡钒张彬彬林静
Owner XIAMEN UNIV
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