Bamboo-carbon-based solid acid catalyst for biodiesel and preparation method and application of bamboo-carbon-based solid acid catalyst

A technology of solid acid catalyst and biodiesel, which is applied in the direction of catalyst activation/preparation, physical/chemical process catalysts, chemical instruments and methods, etc. It can solve the problems of high raw material cost and waste of resources, and achieve low carbonization temperature and water washing operation. Effects of improving efficiency and increasing specific surface area

Inactive Publication Date: 2018-05-08
山东大学深圳研究院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The solid acid catalyst uses bamboo powder from a wide range of sources as raw material to solve the problems of high raw material cost and waste of resources

Method used

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  • Bamboo-carbon-based solid acid catalyst for biodiesel and preparation method and application of bamboo-carbon-based solid acid catalyst
  • Bamboo-carbon-based solid acid catalyst for biodiesel and preparation method and application of bamboo-carbon-based solid acid catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0033] The specific operation schematic diagram of the preparation method of the present invention is as figure 1 As shown, take 100g of bamboo powder and place it in a blast drying oven to dry for 24 hours for later use; take 47.06g of concentration and mix it with 85% phosphoric acid solution (the quality of pure phosphoric acid is 40g) and mix it with 352.94g of deionized water to prepare a mass concentration of 10% phosphoric acid Dilute solution; weigh 20g of dried bamboo powder and mix it with phosphoric acid solution, stir and impregnate for 5 hours, then dry at 105°C for 12 hours; carbonize the impregnated bamboo powder at 500°C for 2 hours under the protection of nitrogen, and grind and sieve the carbonized product to 200 mesh Finally, wash repeatedly with 80°C deionized water until neutral, and then dry the product at 105°C for 4 hours; take 5g of the dried carbonized product and mix it with 0.556g of phosphotungstic acid, dissolve it in 75mL of deionized water, and p...

Embodiment 2

[0036] Get 100g of bamboo powder and place it in a blast drying oven to dry for 24 hours for subsequent use; take 47.06g of concentration and mix it with 85% phosphoric acid solution (the quality of pure phosphoric acid is 40g) and 86.27g of deionized water to prepare a 30% phosphoric acid dilute solution; Weigh 20 g of dried bamboo powder and mix it with phosphoric acid solution, stir and impregnate for 5 hours, then dry at 105°C for 12 hours; carbonize the impregnated bamboo powder at 600°C for 2 hours under the protection of nitrogen, grind and sieve the carbonized product to 200 mesh, and use Wash with deionized water repeatedly at 80°C until neutral, then dry the product at 105°C for 4 hours; take 5g of the dried carbonized product and mix it with 2.143g of phosphotungstic acid, dissolve it in 75mL of deionized water, and dry it at 65°C under magnetic stirring The water was evaporated to dryness to obtain a bamboo carbon-based solid acid with a loading capacity of phosphot...

Embodiment 3

[0039] Get 100g of bamboo powder and place it in a blast drying oven to dry for 24h for subsequent use; take 47.06g of concentration and mix it with 85% phosphoric acid solution (the quality of pure phosphoric acid is 40g) and 32.94g of deionized water to prepare a 50% phosphoric acid dilute solution; Weigh 20 g of dried bamboo powder and mix it with phosphoric acid solution, stir and impregnate for 5 hours, then dry at 105°C for 12 hours; carbonize the impregnated bamboo powder at 700°C for 2 hours under the protection of nitrogen, and grind and sieve the obtained carbonized product to 200 mesh, then use Wash with deionized water repeatedly at 80°C until neutral, then dry the product at 105°C for 4 hours; take 5g of the dried carbonized product and mix it with 0.556g of phosphotungstic acid, dissolve it in 75mL of deionized water, and dry it at 65°C under magnetic stirring The water was evaporated to dryness to obtain a bamboo carbon-based solid acid with a phosphotungstic aci...

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Abstract

The invention discloses a bamboo-carbon-based solid acid catalyst for biodiesel and a preparation method and application of the bamboo-carbon-based solid acid catalyst. The preparation method includesthe following steps that 1, after being dried, bamboo powder is soaked in a phosphoric acid solution, and after being soaked for a set time, the bamboo powder is dried for standby application; 2, thebamboo powder soaked in the step is heated, carbonized, washed with water to be neutral, and dried for standby application; 3, a carbonized product in the step 2 is mixed with a phosphotungstic acidsolution, the mixture is stirred evenly and dried through evaporation, and the bamboo-carbon-based solid acid catalyst is obtained through preparation. The phosphoric acid solution is used for soaking and activating the bamboo powder, phosphoric acid molecules are used for filling pore structures of the bamboo powder, catalytic degradation is conducted to promote low molecularization of the bamboo powder, a gas escaping material is formed in the carbonation process, the pore expanding effect is achieved, the specific surface area of the prepared bamboo-carbon-based solid acid catalyst is largely increased, and the catalytic esterification efficiency of the catalyst is easily improved.

Description

technical field [0001] The invention relates to catalyst preparation technology, in particular to a bamboo carbon-based solid acid catalyst for biodiesel and its preparation method and application. Background technique [0002] As a substitute for petroleum diesel, biodiesel has similar or better physical and chemical indicators such as flash point and cetane number, and has the advantages of degradability, regeneration, and low sulfur content in combustion products. It is a typical " Green Energy". Vigorously developing biodiesel is of great significance to alleviate the energy crisis and environmental pollution caused by coal, oil, natural gas and other fossil fuels. At present, the most commonly used method for industrial production of biodiesel is the transesterification method catalyzed by homogeneous bases such as KOH and NaOH, but it is severely restricted by the high cost of raw material oil. Using cheap acidified oils such as waste oil from the catering industry i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/188B01J35/10B01J37/02B01J37/08C10L1/02C11C3/00
CPCB01J27/188B01J35/1023B01J35/1057B01J35/1061B01J37/0201B01J37/084C10L1/02C11C3/003Y02E50/10
Inventor 牛胜利宁一麟韩奎华路春美
Owner 山东大学深圳研究院
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