Tin loaded porous carbon based solid acid catalyst as well as preparation method and application thereof

A technology of solid acid catalyst and porous carbon, which is applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to improve conversion efficiency, avoid polymerization and hydrolysis, and improve effective The effect of diffusing away

Inactive Publication Date: 2018-07-27
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, there is no report on the application of supported tin carbon-based solid acid catalysts in the production of furfural.

Method used

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  • Tin loaded porous carbon based solid acid catalyst as well as preparation method and application thereof
  • Tin loaded porous carbon based solid acid catalyst as well as preparation method and application thereof
  • Tin loaded porous carbon based solid acid catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of supported tin porous carbon-based solid acid catalyst: 1g furfural slag, 0.5g ZnCl 2 with 0.5g SnCl 4 Mix with 10g of ultrapure water, soak for a week, then dry in an oven at 60°C for 6h, then place in a tube furnace, heat up to 400°C for 2h under a nitrogen atmosphere, and obtain carbonized furfural slag; put the carbonized furfural slag in water, and use The stirring bar was stirred for 3 hours, the sand core funnel was filtered and washed, and dried to obtain the desired solid acid catalyst.

[0036] The acidity of the prepared catalyst was 1.43mmol / g, and the tin loading was 9.81wt%.

[0037] The XRD pattern of the prepared loaded tin porous carbon-based solid acid catalyst is as follows figure 1 shown by figure 1 It can be seen that tin atoms are supported on the catalyst.

[0038] The N adsorption-desorption curve of the prepared loaded tin porous carbon-based solid acid catalyst is as follows figure 2 shown by figure 2 It can be seen th...

Embodiment 2

[0050] (1) Preparation of supported tin porous carbon-based solid acid catalyst: 1g bean dregs, 2g H 3 PO 4 with 2g SnCl 2 Mix with 30g of ultra-pure water, soak for two weeks, then dry in an oven at 70°C for 9 hours, then place in a tube furnace, heat up to 600°C under a nitrogen atmosphere and carbonize for 6 hours to obtain carbonized bean dregs; put carbonized bean dregs in water and stir for 6 hours , filter and wash with a sand core funnel, and dry to obtain a tin-loaded porous carbon-based solid acid catalyst.

[0051] The acidity of the prepared catalyst is 1.09mmol / g, and the specific surface area is 986.51m 2 / g, the tin loading is 8.56wt%; the catalyst has a porous structure including micropores and mesopores, and the pore volume is 0.23cm 3 / g, the average pore diameter of the pore structure is 4.69nm.

[0052] (2) Catalyst catalyzed xylan to prepare furfural: After mixing 0.3g xylan, 0.1g prepared tin-supported porous carbon-based solid acid catalyst, and 10mL...

Embodiment 3

[0058] (1) Preparation of supported tin porous carbon-based solid acid catalyst: 1g corn silk, 4g H 3 PO4 with 4g SnCl 4 Mix with 100mL ultrapure water, soak for three weeks, then dry in an oven at 80°C for 12h, then place in a tube furnace, heat up to 800°C for 10h under a nitrogen atmosphere to obtain carbonized corn silk; put the carbonized corn silk in water, Stir for 12 hours, filter and wash with a sand core funnel, and dry to obtain a tin-loaded porous carbon-based solid acid catalyst.

[0059] The acidity of the prepared catalyst is 1.09mmol / g, and the specific surface area is 1026.35m 2 / g, the tin loading is 10.26wt%; the catalyst has a porous structure including micropores and mesopores, and the pore volume is 0.33cm 3 / g, the average pore diameter of the pore structure is 4.82nm.

[0060] (2) Catalyst catalyzed corncobs to prepare furfural: mix 0.5g corncobs, 0.3g prepared tin-loaded porous carbon-based solid acid catalyst, and 10mL γ-valerolactone, put them in ...

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Abstract

The invention discloses a tin loaded porous carbon based solid acid catalyst as well as a preparation method and application thereof. According to the preparation method, biomass waste and active materials are soaked in a tin salt water solution; then, the soaked biomass waste materials are taken out and dried and are next put into a tubular furnace; carbonization is performed to obtain carbonizedmaterials; then, the carbonized materials are put into water to be stirred; filtering and washing are performed by a sand core funnel; the tin loaded porous carbon based solid acid catalyst is obtained. After the tin loaded porous carbon based solid acid catalyst is mixed with carbohydrate and solvents, the mixture is put into a hydrothermal reactor for reaction; reaction products are subjected to separation and purification to obtain furfural. The tin loaded porous carbon based solid acid catalyst provided by the invention has greater specific surface area, greater hole size and higher aciddensity; in the process of catalytic preparation of furfural, the catalyst shows excellent solid catalysis performance; the furfural yield is 40 to 90 percent; the relatively good circulation utilization performance is realized.

Description

technical field [0001] The invention belongs to the field of solid acid catalyst preparation technology and application, and in particular relates to a tin-loaded porous carbon-based solid acid catalyst, a preparation method thereof, and an application in catalyzing carbohydrates to produce furfural. Background technique [0002] With the depletion of non-renewable primary energy-fossil energy, countries around the world have begun to pay attention to the conservation of non-renewable energy, and accelerate the research and development of renewable energy-biomass energy. Lignocellulosic biomass will play an important role in industrial development and environmental pollution because of its environmental friendliness, abundant reserves and low cost. [0003] Biomass can produce a variety of platform compounds, among which furfural is one of the important derivatives of furan, which is obtained by dehydration of polypentose obtained from agricultural and sideline products thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/14B01J35/10C07D307/48C07D307/50
CPCB01J35/1023B01J35/1028B01J35/1038C07D307/48C07D307/50
Inventor 任俊莉林琦璇孙润仓王孝辉程帮贵
Owner SOUTH CHINA UNIV OF TECH
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