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Biodiesel catalyst preparation method

A biodiesel and catalyst technology, applied in the direction of physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of increasing the production cost and production difficulties of biodiesel, and achieve Inexpensive, environmentally friendly, and the effect of reducing loss

Inactive Publication Date: 2015-08-05
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the production of these carriers is difficult, which will also increase the production cost of biodiesel

Method used

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  • Biodiesel catalyst preparation method

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Crush egg shells and pass through a 160-180 mesh sieve to obtain solid powder;

[0026] (2) Sodium silicate powder is dissolved in 50ml deionized water and is made into the sodium silicate solution of 0.4mol / L solubility;

[0027] (3) Add 5 g of egg shell powder (with a mass ratio of 2.2 to sodium silicate) into the sodium silicate solution obtained in step (2), and stir for 4 hours under the condition of a magnetic stirrer at 600 rpm;

[0028] (4) drying the suspension obtained in step (3) overnight at 105°C in a vacuum oven to obtain a powdery solid;

[0029] (5) Calcining the powdered solid obtained in step (4) in a muffle furnace under nitrogen at 800° C. for 4 hours to obtain a powdered catalyst, which will be stored in a vacuum oven after being taken out.

[0030] In order to test the catalytic activity of the catalyst, put 3g of the catalyst, 30g of palm oil and 10.8g of methanol into a 100ml round-bottomed flask equipped with a magnetic stirring device afte...

Embodiment 2

[0035] (1) Crush egg shells and pass through a 160-180 mesh sieve to obtain solid powder;

[0036] (2) A certain amount of sodium silicate powder is dissolved in 100ml deionized water to be made into a sodium silicate solution with a solubility of 0.2mol / L;

[0037] (3) Add 10 g (the mass ratio to sodium silicate is 4.4) of egg shell powder into the sodium silicate solution obtained in step (2), and stir for 5 hours under the condition of a magnetic stirrer at 500 rpm;

[0038] (4) drying the suspension obtained in step (3) overnight at 105°C in a vacuum oven to obtain a powdery solid;

[0039] (5) Calcining the powdered solid obtained in step (4) in a muffle furnace under nitrogen at 800° C. for 4 hours to obtain a powdered catalyst, which will be stored in a vacuum oven after being taken out.

[0040] In order to test the catalytic activity of the catalyst, put 3g of the catalyst, 30g of palm oil and 10.8g of methanol into a 100ml round-bottomed flask equipped with a magnet...

Embodiment 3

[0042] (1) Crush egg shells and pass through a 160-180 mesh sieve to obtain solid powder;

[0043] (2) A certain amount of sodium silicate powder is dissolved in 50ml deionized water to be made into a sodium silicate solution with a solubility of 0.6mol / L;

[0044] (3) Add 5 g (the mass ratio to sodium silicate is 1.5) of egg shell powder into the sodium silicate solution obtained in step (2), and stir for 3 hours under the condition of a magnetic stirrer at 700 rpm;

[0045] (4) drying the suspension obtained in step (3) overnight at 105°C in a vacuum oven to obtain a powdery solid;

[0046] (5) Calcining the powdered solid obtained in step (4) in a muffle furnace under nitrogen at 800° C. for 4 hours to obtain a powdered catalyst, which will be stored in a vacuum oven after being taken out.

[0047] In order to test the catalytic activity of the catalyst, put 3g of the catalyst, 30g of palm oil and 10.8g of methanol into a 100ml round-bottomed flask equipped with a magnetic...

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Abstract

The present invention relates to a preparation method for preparing a biodiesel catalyst by using eggshell. The preparation method comprises: crushing eggshell, screening with a 160-180 mesh sieve to obtain powder solid, dissolving a certain amount of sodium silicate powder in deionized water to prepare a sodium silicate solution, adding the eggshell powder to the sodium silicate solution according to a mass ratio of the eggshell to the sodium silicate of 1.5-4.4, carrying out magnetic stirring, drying the obtained suspension overnight in a vacuum drying oven to obtain the powdery solid, calcining the powdery solid in a muffle furnace under a nitrogen introducing condition to obtain a powdery catalyst, taking out, and storing in the vacuum drying oven so as to finally obtain the powder, wherein the obtained powder is the biodiesel catalyst. According to the present invention, the catalyst has characteristics of raw material environment protection, low price, and regeneration; the catalyst activity is strong, and the biodiesel yield can achieve more than or equal to 85%; and the catalyst has good stability, and the fatty acid conversion rate can achieve more than or equal to 80% after reusing eight times.

Description

technical field [0001] The invention relates to biodiesel catalyst technology, in particular to a method for preparing a biodiesel catalyst by utilizing eggshells. Background technique [0002] As a kind of sustainable energy, biodiesel has the advantages of environmental friendliness, zero emission and biodegradability, and now the research on biodiesel has become one of the hot spots in the world. Homogeneous catalysis (NaOH, H 2 SO 4 ) to prepare, although this method has a fast catalytic reaction and high yield of biodiesel, but the homogeneous reaction has problems such as corrosive equipment, complicated product post-treatment, difficult recovery and large amount of waste water. Therefore, the research and development of green and efficient catalysts has become an urgent problem to be solved. Therefore, in recent years, scientists have been working on the development of reusable heterogeneous catalysts as well as new methods for producing biodiesel. There are many ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/02
Inventor 陈冠益单锐石家福颜蓓蓓
Owner TIANJIN UNIV