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Application of carbon-based solid base catalyst in microalgae biodiesel

A technology of biodiesel and catalyst, applied in catalyst activation/preparation, physical/chemical process catalyst, biofuel, etc., can solve the problems of poor mechanical strength and high temperature resistance, low catalyst utilization rate, poor catalytic effect, etc., to achieve High conversion rate, reduced production steps, and convenient handling

Inactive Publication Date: 2018-06-22
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

Although there are many resource utilization studies on Enteromorpha, there is no report on how to use Enteromorpha as a catalyst raw material to prepare biodiesel from microalgae
[0006] At the same time, the existing catalyst supports have the disadvantages of poor mechanical strength and high temperature resistance, and are prone to sintering and structural collapse at high temperatures. Therefore, the application in the field of biodiesel has the problems of low catalyst utilization and poor catalytic effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) A preparation method of modified Enteromorpha biochar catalyst:

[0037] Rinse the salvaged fresh Enteromorpha with pure water to remove impurities such as dust and sand on its surface, then place the washed Enteromorpha in an oven at 85°C until there is no moisture, and place the dried enteromorpha in a plant crusher The dry powder of Enteromorpha is obtained by crushing. Weigh 3g of potassium carbonate, add deionized water to dissolve, then add 5g of Enteromorpha dry powder, stir evenly, soak for a certain period of time, and then dry at 105°C. The dried mixture was blown under nitrogen (100cm 3 / min) in a tube furnace with a heating rate of 10 °C / min to 800 °C, activated for 1 h, and the sample was naturally cooled to room temperature and taken out to obtain Enteromorpha biochar solid catalyst modified with potassium carbonate.

[0038] (2) In situ transesterification of microalgae:

[0039] Put 1g of chlorella powder in a 150mL Erlenmeyer flask, add 5mL of n-he...

Embodiment 2

[0042] (1) A preparation method of modified Enteromorpha biochar catalyst:

[0043] Rinse the salvaged fresh Enteromorpha with pure water to remove impurities such as dust and sand on its surface, then place the washed Enteromorpha in an oven at 85°C until there is no moisture, and place the dried enteromorpha in a plant crusher The dry powder of Enteromorpha is obtained by crushing. Weigh 3g of potassium carbonate, add deionized water to dissolve, then add 5g of Enteromorpha dry powder, stir evenly, soak for a certain period of time, and then dry at 105°C. The dried mixture was blown under nitrogen (100cm 3 / min) in a tube furnace with a heating rate of 10°C / min to 800°C, activated for 2h, and the sample was naturally cooled to room temperature and taken out to obtain Enteromorpha biochar solid catalyst modified with potassium carbonate.

[0044] (2) In situ transesterification of microalgae:

[0045] Put 1g of chlorella powder in a 150mL Erlenmeyer flask, add 5mL of n-hex...

Embodiment 3

[0048] (1) A preparation method of modified Enteromorpha biochar catalyst:

[0049] Rinse the salvaged fresh Enteromorpha with pure water to remove impurities such as dust and sand on its surface, then place the washed Enteromorpha in an oven at 85°C until there is no moisture, and place the dried enteromorpha in a plant crusher The dry powder of Enteromorpha is obtained by crushing. Weigh 3g of potassium carbonate, add deionized water to dissolve, then add 5g of Enteromorpha dry powder, stir evenly, soak for a certain period of time, and then dry at 105°C. The dried mixture was blown under nitrogen (100cm 3 / min) in a tube furnace with a heating rate of 10 °C / min to 800 °C, activated for 3 h, and the sample was naturally cooled to room temperature and taken out to obtain Enteromorpha biochar solid catalyst modified with potassium carbonate.

[0050] (2) In situ transesterification of microalgae:

[0051] Put 1g of chlorella powder in a 150mL Erlenmeyer flask, add 5mL of n-...

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Abstract

The invention discloses an application of a carbon-based solid base catalyst in microalgae biodiesel. The carbon-based solid base catalyst comprises a modified biochar catalyst and a supported orderedmesoporous carbon catalyst. The preparation method of the modified biochar catalyst comprises the following steps: crushing enteromorpha to obtain dried enteromorpha powder, adding the dried enteromorpha powder into a potassium carbonate solution, performing uniform mixing, performing drying, performing heating to 800+ / -10 DEG C under an inert gas atmosphere, performing activation for 2+ / -0.1h, and performing natural cooling to obtain the modified enteromorpha biochar catalyst. According to the method provided by the invention, the enteromorpha biochar modified and activated by the potassiumsalt has the advantages of a large specific surface area and high catalyst bioactivity, and has a higher conversion rate in preparation of the biodiesel from microalgae oil.

Description

technical field [0001] The invention relates to the field of biodiesel, in particular to the preparation of loaded ordered mesoporous carbon and modified biochar solid base catalyst, and is applied to the method for preparing microalgae biodiesel by in-situ transesterification reaction. Background technique [0002] With the increasing depletion of petroleum resources and the serious environmental pollution caused by their use, countries around the world are actively developing and producing biodiesel. Biodiesel, or fatty acid methyl ester, is a biodegradable, non-toxic renewable energy source. Since 1988, many European countries have used biodiesel as an alternative to conventional diesel. In the United States and Europe, soybean oil and rapeseed oil are the most common feedstocks for biodiesel, respectively. However, the price of crop-based biodiesel is higher than that of fossil fuels, and the use of a large number of food crops to produce biodiesel has the potential to...

Claims

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Application Information

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IPC IPC(8): C11C3/10C10L1/02B01J23/04B01J21/18B01J35/10B01J37/08
CPCC10L1/02C11C3/10B01J21/18B01J23/04B01J37/0009B01J37/084B01J35/60Y02E50/10
Inventor 王睿张景
Owner 山东大学深圳研究院