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A cobalt-based sba15 catalyst

A catalyst, cobalt-based technology, applied in the field of magnesium oxide desulfurization, can solve problems that have not been explored

Active Publication Date: 2020-08-11
NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In conclusion, the above studies all use cobalt compounds as active components loaded on SBA-15 for various catalytic reactions, but the application of Co-SBA-15 to the oxidation of magnesium sulfite has not been explored yet.

Method used

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  • A cobalt-based sba15 catalyst
  • A cobalt-based sba15 catalyst
  • A cobalt-based sba15 catalyst

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Experimental program
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Embodiment Construction

[0028] A cobalt-based SBA15 catalyst, the cobalt-based loading amount is 2%wt, and the cobalt-based is highly dispersed inside the SBA15 pores.

[0029] Its preparation method is as follows:

[0030] First, weigh 2g of SBA15 solid powder and 0.1973g of cobalt nitrate particles, dissolve the two in 100ml of absolute ethanol, and place them in a beaker for magnetic stirring for 5h; secondly, let stand and crystallize for 24h; then, place Vacuum rotary evaporator was evaporated and dried for 2 hours at a temperature of 60°C; finally, it was roasted in a muffle furnace at 450°C for 5 hours.

[0031] The catalyst is mainly used to promote the oxidation of magnesium sulfite in the process of magnesium oxide desulfurization.

[0032] Such as figure 1 and 2 Shown is the effect of cobalt loading and loading on catalytic performance. The cobalt-based loading has a great influence on the catalyst performance. As the loading increases, the oxidation rate of magnesium sulfite increases...

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Abstract

The invention discloses an SBA15 catalyst loading a cobalt base. The loading amount of the cobalt base is 2%wt, and the cobalt base is highly dispersed inside pore canals of SBA15. The preparing method of the SBA15 catalyst comprises the steps of firstly weighing, by weight, 2 parts of solid powder of SBA15 and 0.1973 part of cobalt nitrate particles, dissolving the solid powder and cobalt nitrate particles into 100 parts (by weight) of absolute ethyl alcohol, and placing thee mixture into a beaker and conducting magnetic stirring for 5 h; secondly conducting still standing and crystallization for 24h; then placing the material obtained in the last step in a vacuum rotary evaporator to conduct evaporation drying for 2h, wherein the temperature is 60 DEG C; finally roasting the material in a muffle furnace at the temperature of 450 DEG C for 5h. The SBA15 catalyst loading the cobalt base is used for promoting oxidization of magnesium sulfite in a magnesia desulfurization process, the cost is lowered, and the catalysis efficiency is improved at the same time.

Description

technical field [0001] The invention is applied in the technical field of magnesium oxide desulfurization, and in particular relates to a cobalt-based SBA15 catalyst for promoting the oxidation of magnesium sulfite in the magnesium oxide desulfurization process. Background technique [0002] In recent years, due to its strong stability and high specific surface area, SBA-15 has been used as a catalyst carrier as a research object. Hassan et al. prepared solid-phase Co-SBA-15 with different loadings by double-solvent. 15 Catalyst, applied to the oxidation reaction of carbon, propylene and toluene, the results show that the catalyst with loading less than or equal to 12wt% can lower the reaction temperature, and has higher selective catalytic activity for this reaction. Franken prepared Cu0.25Co2.75O4-SBA-15 using the hard template method, and studied its catalytic effect on N2O reduction reaction. Garg used the incipient wetness impregnation method to prepare 8wt% Mo promote...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/03C01F5/40
CPCB01J29/0333B01J2229/186C01F5/40
Inventor 汪黎东齐铁月王浩伍思宇
Owner NORTH CHINA ELECTRIC POWER UNIV (BAODING)