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Preparation process and application of Fe-based metal organic framework solid acid catalyst

A technology of solid acid catalyst and organic framework, which is applied in the direction of preparation of organic compounds, catalyst activation/preparation, organic compound/hydride/coordination complex catalysts, etc. It can solve the problems of short service life and achieve long service life, Improve catalyst activity and repeated use times, and facilitate the effect of product separation

Pending Publication Date: 2019-12-31
SHANDONG JIANZHU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of a large amount of acidic waste water produced by using concentrated sulfuric acid as a sulfonating agent to load sulfonic acid groups to prepare solid acids and the short service life of the catalyzed esterification reaction of sulfonic acid groups

Method used

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  • Preparation process and application of Fe-based metal organic framework solid acid catalyst
  • Preparation process and application of Fe-based metal organic framework solid acid catalyst
  • Preparation process and application of Fe-based metal organic framework solid acid catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A kind of preparation technology of Fe-based metal organic framework solid acid catalyst, comprises the steps:

[0038] (1) Prepare a dilute sulfuric acid solution with a concentration of 0.8mol / L, then weigh 2gMIL-100(Fe) and add it to 25mL dilute sulfuric acid solution, stir at room temperature for 60min, pour the mixture into the hydrothermal reaction kettle, and use Heat the reactor to 60°C in a blast drying oven, heat for 30 hours and then cool to room temperature.

[0039] (2) Place the mixed material in the reaction kettle in a centrifuge, centrifuge at 3000r / min for 30min, remove the supernatant, put the obtained solid material in 200mL deionized water, stir and wash at 60°C for 30min, and filter to separate the solid product , if the filtrate pH<7, repeat this step until the filtrate pH=7, then filter to obtain the washing material.

[0040] (3) Dry the washed material in a blast drying oven at 130° C. for 20 hours, then transfer to a vacuum drying oven, and d...

Embodiment 2

[0043] A kind of preparation technology of Fe-based metal organic framework solid acid catalyst, comprises the steps:

[0044] (1) Prepare a dilute sulfuric acid solution with a concentration of 0.9mol / L, then weigh 2gMIL-100(Fe) and add it to 25mL of dilute sulfuric acid solution, stir at room temperature for 60min, pour the mixture into a hydrothermal reaction kettle, and use Heat the reactor to 160°C in a blast drying oven, heat for 15 hours and then cool to room temperature.

[0045] (2) Put the mixed material in the reaction kettle in a centrifuge, centrifuge at 3000r / min for 30min, remove the supernatant, put the obtained solid material in 200mL deionized water, stir and wash at 80°C for 20min, filter and separate the solid product , if the filtrate pH<7, repeat this step until the filtrate pH=7, then filter to obtain the washing material.

[0046] (3) The washed material was dried in a blast drying oven at 120° C. for 24 hours, then transferred to a vacuum drying oven,...

Embodiment 3

[0049] A kind of preparation technology of Fe-based metal organic framework solid acid catalyst, comprises the steps:

[0050] (1) Prepare a dilute sulfuric acid solution with a concentration of 1.0mol / L, then weigh 2gMIL-100(Fe) and add it to 25mL of dilute sulfuric acid solution, stir at room temperature for 60min, pour the mixture into a hydrothermal reaction kettle, and use Heat the reactor to 300°C in a blast drying oven, heat for 1 hour and then cool to room temperature.

[0051] (2) Put the mixed material in the reaction kettle in a centrifuge, centrifuge at 3000r / min for 30min, remove the supernatant, put the obtained solid material in 200mL deionized water, stir and wash at 40°C for 35min, and filter to separate the solid product , if the filtrate pH<7, repeat this step until the filtrate pH=7, then filter to obtain the washing material.

[0052] (3) Dry the washed material in a blast drying oven at 100° C. for 24 hours, then transfer to a vacuum drying oven, and dry...

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Abstract

The invention relates to the technical field of solid acid catalysts for biodiesel production, particularly to a preparation process and application of a Fe-based metal organic framework solid acid catalyst. The process comprises the following steps: 1) putting MIL-100 (Fe) in a dilute sulfuric acid solution for a hydrothermal reaction, and after the reaction is finished, separating out a solid product to obtain a precursor; 2) washing the precursor obtained in the step 1) with water until a washing solution is neutral so as to obtain a neutral precursor; and (3) drying the neutral precursor obtained in the step 2) to obtain the Fe-based metal organic framework solid acid catalyst. According to the preparation method, the solid acid catalyst with high catalytic activity and good stabilityis prepared based on the metal organic framework material (MIL-100 (Fe)) with dilute sulfuric acid as a sulfonation reagent, and is used for catalyzing an esterification reaction to prepare biodiesel.

Description

technical field [0001] The invention relates to the technical field of solid acid catalysts for biodiesel production, in particular to a preparation process and application of an Fe-based metal-organic framework solid acid catalyst. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] Biodiesel is a fatty acid alkyl monoester obtained by esterification or transesterification with alcohols (low-carbon chain alcohols such as methanol) under the catalysis of acids, alkalis or biological enzymes, using animal and vegetable oils and fatty acids as raw materials. . As a green and environmentally friendly renewable fuel, biodiesel has the advantages of high cetane numb...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22B01J37/10C07C67/08C07C69/58C10L1/02C11C3/00
CPCB01J31/1691B01J37/10C11C3/003C10L1/02C07C67/08B01J2531/842B01J2540/32B01J2231/49C07C69/58Y02E50/10
Inventor 李辉王阳阳崔萍郭敏刘丰盛楚会君王永博
Owner SHANDONG JIANZHU UNIV
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