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A kind of acid-base amphoteric solid catalyst, its preparation and its application in the production of biodiesel

A solid catalyst and amphoteric technology, applied in the direction of catalyst activation/preparation, physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, etc. Active sites are easy to leach and other problems, and achieve the effects of universality, not easy to fall off, and high catalytic reaction yield

Active Publication Date: 2020-12-22
SHANDONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems of calcium-based solid base-catalyzed transesterification mass transfer resistance, easy leaching of active sites, poor reusability, and weak acid resistance. Preparation of permanent solid catalyst and its application in the production of biodiesel

Method used

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  • A kind of acid-base amphoteric solid catalyst, its preparation and its application in the production of biodiesel
  • A kind of acid-base amphoteric solid catalyst, its preparation and its application in the production of biodiesel

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Weigh successively 3g halloysite, 12.63g Ca(NO 3 ) 2 4H 2 O, 8.98g La(NO 3 ) 3 and 34.21g of urea were mixed in deionized water, and stirred evenly to obtain a suspension. The suspension was placed in a hydrothermal reaction kettle, aged at 120° C. for 24 hours, and then cooled to room temperature. After filtration, the obtained solid was dried at 105°C for 14 hours, and then the product was calcined at a rate of 5°C / min from 50°C to 850°C for 5 hours to obtain a mass ratio of calcium oxide to halloysite of 1, And the acid-base amphoteric solid catalyst with a mass ratio of lanthanum oxide / calcium oxide of 1.5.

[0060] 12.64g of methanol, 20g of palm oil, 1g of oleic acid and 1.4g of catalyst were successively added into the autoclave, heated to 150°C under constant stirring at a rotational speed of 1200r / min and maintained for 2 hours. The reaction product is separated by a centrifuge to separate the solid catalyst, and the liquid product is placed in a separato...

Embodiment 2

[0062] Weigh successively 3g halloysite, 12.63g Ca(NO 3 ) 2 4H 2 O, 11.97g La(NO 3 ) 3 and 39.19g of urea were mixed in deionized water, and stirred evenly to obtain a suspension. The suspension was placed in a hydrothermal reaction kettle, aged at 120° C. for 24 hours, and then cooled to room temperature. After filtration, the obtained solid was dried at 105°C for 14 hours, and then the product was calcined at a rate of 5°C / min from 50°C to 850°C for 5 hours to obtain a mass ratio of calcium oxide to halloysite of 1, And the acid-base amphoteric solid catalyst with the mass ratio of lanthanum oxide / calcium oxide being 2.

[0063] 12.64g of methanol, 20g of palm oil, 1g of oleic acid and 1.4g of catalyst were successively added into the autoclave, heated to 150°C under constant stirring at a rotational speed of 1200r / min and maintained for 2 hours. The reaction product is separated by a centrifuge to separate the solid catalyst, and the liquid product is placed in a sepa...

Embodiment 3

[0065] Weigh successively 3g halloysite, 12.63g Ca(NO 3 ) 2 4H 2 O, 5.98g La(NO 3 ) 3 and 29.23g of urea were mixed in deionized water, and stirred evenly to obtain a suspension. The suspension was placed in a hydrothermal reaction kettle, aged at 120° C. for 24 hours, and then cooled to room temperature. After filtration, the obtained solid was dried at 105°C for 14 hours, and then the product was calcined at a rate of 5°C / min from 50°C to 850°C for 5 hours to obtain a mass ratio of calcium oxide to halloysite of 1, And the acid-base amphoteric solid catalyst with the mass ratio of lanthanum oxide / calcium oxide being 1.

[0066] 12.64g of methanol, 20g of palm oil, 1g of oleic acid and 1.4g of catalyst were successively added into the autoclave, heated to 150°C under constant stirring at a rotational speed of 1200r / min and maintained for 2 hours. The reaction product is separated by a centrifuge to separate the solid catalyst, and the liquid product is placed in a separ...

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Abstract

The invention relates to an acidic-basic solid catalyst, preparation and application of the acidic-basic solid catalyst in production of biodiesel. The acidic-basic solid catalyst is HNTs-La / Ca, and apreparation method comprises a following step: taking halloysite, lanthanum nitrate and calcium nitrate as raw materials; the prepared catalyst is high in catalytic reaction yield, and the yield of biodiesel can be increased; the catalyst has acid-base bipolar sites, has good acid resistance, and has low requirements on the quality of raw oil; the catalyst is high in activity and reaction stability; the mechanical strength of the catalyst is increased, and recycling is more convenient.

Description

technical field [0001] The invention belongs to the field of catalyst preparation, and in particular relates to a method for preparing an acid-base amphoteric solid catalyst with halloysite as a carrier and lanthanum-calcium composite oxide as an active site and its application in catalyzing transesterification to produce biodiesel. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Biodiesel is usually a fatty acid alkyl ester obtained by catalytic transesterification using vegetable fats and animal oils as raw materials. It is renewable, has low emissions of combustion pollutants, and has similar or even better physical and chemical indicators to fossil diesel. It can be u...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/10C10L1/02C11C3/10
CPCB01J23/10B01J37/0018B01J37/03B01J37/10C10L1/02C11C3/10Y02E50/10
Inventor 牛胜利林彤赵爽韩奎华李英杰路春美王永征
Owner SHANDONG UNIV
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