Preparation method of porous carbon-loaded metal oxide catalyst

A technology for supporting metals and catalysts, applied in metal/metal oxide/metal hydroxide catalysts, refining with oxygen-containing compounds, physical/chemical process catalysts, etc., can solve the problem of low catalytic activity and organic thiophene sulfide removal effect Poor, less thiophene reports, etc., to achieve the effect of improving desulfurization capacity

Inactive Publication Date: 2013-09-11
SUN YAT SEN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are still many difficulties in the application of these technologies, including the low catalytic activity of gasoline oxidation desulfurization catalysts, and the relatively poor removal effect on organic thiophene sulfides in gasoline.
Although there are many reports on catalytic oxidation removal of thiophene derivatives such as BT, DBT, and DMDBT in the world, there are few reports on thiophene, and the effect is not ideal.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] 1) Preparation of sol-gel

[0051] Heat 50 mL of ultrapure water to boiling, add 5 g of polyvinyl alcohol (PVA), stir constantly to dissolve it completely, then add 10 g of ZnCl 2 And 18.3g manganese nitrate (metal source and ZnCl 2 The molar ratio is 1:1);

[0052] 2) Pre-oxidation

[0053] Transfer the cooled gel sample in 1) to a petri dish, and place it in an oven for pre-oxidation at 100°C for 2 h;

[0054] 3) Carbonization

[0055] Put the pre-oxidized product obtained in 2) in a high-temperature carbonization furnace under nitrogen protection (flow rate 400 mL / min), start directly from room temperature to 550°C at a rate of 5°C / min, and then keep it for 120 minutes. Take out the sample when the temperature drops below 150°C;

[0056] 4) Sample post-processing

[0057] The sample was ultrasonically washed with pure water for 4 hours, filtered with suction, and dried in an oven at 120°C to obtain the product required for the experiment;

[0058] Thiophene was ...

Embodiment 2

[0060] 1) Preparation of sol-gel

[0061] Heat 50 mL of ultrapure water to boiling, add 8 g of polyvinyl alcohol (PVA), stir constantly to dissolve it completely, then add 10 g of ZnCl 2 And 2.86g ammonium metavanadate (metal source and ZnCl 2 The molar ratio is 1:3);

[0062] 2) Pre-oxidation

[0063] Transfer the cooled gel sample in 1) to a petri dish, and put it in an oven at 200°C for pre-oxidation overnight;

[0064] 3) Carbonization

[0065] Put the pre-oxidized product obtained in 2) in a high-temperature carbonization furnace under the protection of nitrogen (flow rate 400 mL / min), start directly from room temperature to 750°C at a rate of 2°C / min, and then keep it for 90 minutes. Take out the sample when the internal temperature drops below 150°C;

[0066] 4) Sample post-processing

[0067] The sample was ultrasonically washed with pure water for 4 h, filtered with suction, and dried in an oven at 120 °C to obtain the product required for the experiment.

[00...

Embodiment 3

[0070] 1) Preparation of sol-gel

[0071] Heat 50 mL of ultra-pure water to boiling, add 10 g of polyvinyl alcohol (PVA), stir constantly to dissolve it completely, then add 10 g of ZnCl 2 And 21.33g nickel nitrate (metal source and ZnCl 2 The molar ratio is 1:1) to make samples.

[0072] 2) Pre-oxidation

[0073] Transfer the cooled gel sample in 1) to a petri dish, and put it in an oven for pre-oxidation at 160°C for 1 hour;

[0074] 3) Carbonization

[0075] Put the product obtained from the pre-oxidation in 2) in a high-temperature carbonization furnace under nitrogen protection (flow rate 400 mL / min), start directly from room temperature to 600 °C at a rate of 4 °C / min, and then keep it for 15 minutes. Take out the sample when the internal temperature drops below 150°C;

[0076] 4) Sample post-processing

[0077] The sample was ultrasonically washed with pure water for 4 h, filtered with suction, and dried in an oven at 120 °C to obtain the product required for the ...

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PUM

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Abstract

The invention relates to a preparation method of a porous carbon-loaded metal oxide catalyst, and particularly relates to a composite catalyst preparation method for enhancing the desulfurization capacity of catalysts by using the synergistic effect of the strong adsorption of porous carbon and the good catalytic oxidation desulfurization capacity of metal oxides. The method is a porous carbon-loaded metal oxide catalyst preparation process implemented through combining porous carbon, H2O2 and metal oxides mainly in a sol-gel method-carbonization mode, wherein the porous carbon adsorbs H2O2 in a water phase, the H2O2 has a catalytic action and can catalyze the adsorption of the porous carbon, and the metal oxides can slowly and permanently release HO.

Description

technical field [0001] The invention relates to a method for preparing a porous carbon-supported metal oxide catalyst, in particular to a method for improving the desulfurization ability of the catalyst by utilizing the synergistic effect of the strong adsorption of the porous carbon and the good catalytic oxidation desulfurization ability of the metal oxide. Background technique [0002] In recent decades, the automobile industry has developed very rapidly and has made great contributions to human civilization and social progress. However, the consumption of fuel oil for vehicles has also increased greatly, and the air pollution caused by vehicle exhaust emissions has also become increasingly serious. The combustion of sulfur compounds in gasoline has caused great harm to the environment and human health, and has attracted widespread public attention. In recent years, countries all over the world have put forward new requirements for the quality of gasoline. Therefore, it i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/25B01J23/22B01J27/10B01J23/30C10G27/12
Inventor 陈水挟马军庄林洲刘长来
Owner SUN YAT SEN UNIV
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