Preparation method and application of MOF/corn straw composite material and device

A corn stalk and composite material technology, applied in chemical instruments and methods, adsorption water/sewage treatment, water/sludge/sewage treatment, etc., can solve the problems of difficult recovery of MOF materials, difficult processing, poor operability, etc. Scale-up production, rich porosity, low-cost effects

Pending Publication Date: 2022-07-29
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a preparation method and application of MOF / corn stalk composite materials and devices, using corn stalks as the carrier to carry out controllable loading on MOF, and using the biological structure of corn stalks to improve the interior of the composite material The mass transfer and the exposure of active sites can promote the intrinsic performance of MOF, and then solve the problems of difficult recycling, difficult processing and poor operability of existing MOF materials, and at the same time realize the resource utilization of waste straw

Method used

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  • Preparation method and application of MOF/corn straw composite material and device
  • Preparation method and application of MOF/corn straw composite material and device
  • Preparation method and application of MOF/corn straw composite material and device

Examples

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Embodiment 1

[0058] A MOF / corn stover composite material:

[0059] a) pretreating the corn stalk, peeling the corn stalk, cutting into sections, washing with 1M dilute hydrochloric acid 3 times, then washing with water until neutral, and drying to obtain the pre-treated corn stalk;

[0060] b) 4 mmol ZrCl 4 , 4mmol terephthalic acid, 10mL glacial acetic acid are dissolved in 80mL N,N-dimethylformamide; Get 1g corn stover to be immersed in above-mentioned solution, pump / vacuum 3 times to make corn stover immersion saturated;

[0061] c) Transfer the straw filled with the MOF precursor solution to a hydrothermal kettle, raise the temperature to 120° C. for 24 hours; then wash the obtained product with DMF and water for several times, remove the remaining reactants, and dry to obtain the biomass with corn stalks. Structure of UiO-66 / straw composites. As shown in Figure 1, picture a is the photo of corn stalk and UiO-66 / corn stalk; picture b is the internal photo of UiO-66 / corn stalk. from ...

Embodiment 2

[0063] A MOF / corn stover composite material:

[0064] a) pretreating the corn stalk, peeling the corn stalk, cutting into sections, washing with 1M dilute hydrochloric acid 3 times, then washing with water to neutrality, drying, and obtaining the pre-treated corn stalk;

[0065] b) 2 mmol ZrCl 4 , 2mmol terephthalic acid, 5mL glacial acetic acid are dissolved in 80mL N,N-dimethylformamide; Get 1g corn stover to be immersed in above-mentioned solution, pump / de-vacuum 3 times to make corn stover immersion saturated;

[0066] c) Transfer the straw filled with the MOF precursor solution to a hydrothermal kettle, raise the temperature to 120° C. for 24 hours; then wash the obtained product with DMF and water several times to remove the remaining reactants, and dry to obtain a low-loading product. UiO-66 / straw composite.

[0067] like figure 2 As shown in a-b, when the precursor concentration is low, the MOF particles are discretely distributed on the surface of the straw, and n...

Embodiment 3

[0069] A MOF / corn stover composite material:

[0070] a) pretreating the corn stalk, peeling the corn stalk, cutting into sections, washing with 1M dilute hydrochloric acid 3 times, then washing with water to neutrality, drying, and obtaining the pre-treated corn stalk;

[0071] b) 8 mmol ZrCl 4 , 8mmol terephthalic acid, 10mL glacial acetic acid are dissolved in 80mL N,N-dimethylformamide; Get 1g corn stover to be immersed in above-mentioned solution, pump / vacuum 3 times to make corn stover immersion saturated;

[0072] c) Transfer the straw filled with the MOF precursor solution to a hydrothermal kettle, raise the temperature to 120° C. for 24 hours; then wash the obtained product with DMF and water for several times, remove the remaining reactants, and dry to obtain a higher loading capacity. UiO-66 / straw composite.

[0073] like figure 2 As shown in a-b, excess MOF particles are freed from the MOF membrane at higher precursor concentrations.

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Abstract

The invention relates to a preparation method and application of an MOF / corn straw composite material and a device. According to the method, the corn straw with honeycomb-shaped ordered macropores is selected as a carrier, MOF uniformly grows on the surfaces of straw cells, the MOF / corn straw composite material maintaining the straw biological structure is obtained, and introduction of the corn straw carrier is beneficial to mass transfer and exposure of active sites. Due to the good mechanical performance of the corn straw, the composite material can be further assembled into a device to be used in the application fields of adsorption, separation, catalysis and the like. The method is low in preparation cost, simple in process, wide in universality, green and sustainable, and has a good large-scale application prospect.

Description

technical field [0001] The invention relates to the technical field of biomass functional materials, in particular to a preparation method and application of a MOF / corn stalk composite material and a device. Background technique [0002] The disclosure of information in this Background section is only for enhancement of understanding of the general background of the invention and should not necessarily be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person of ordinary skill in the art. [0003] In recent years, MOF materials have attracted much attention in the fields of pollutant adsorption, heterogeneous catalysis, and gas separation, and their performance advantages and industrial application feasibility have been widely demonstrated. However, MOF usually exists in the form of powder. In order to facilitate separation and recovery or reduce the pressure drop of the fixed bed, the powder material is usua...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/26B01J20/20B01J20/32C02F1/28C02F101/10
CPCB01J20/226B01J20/20B01J20/3285C02F1/288B01J2220/4825B01J2220/4875C02F2101/105
Inventor 王光辉李德昌张潜张珊
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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