A nanofiber catalyst for SO2 to sulfur production, its preparation method and application

The metal composite oxide catalyst prepared by the template method solves the problem of low efficiency in the resource utilization of sulfur dioxide in the existing technology, and achieves the effect of efficient and low-cost conversion of sulfur dioxide into sulfur, which is suitable for the resource utilization of industrial flue gas.

CN118287094BActive Publication Date: 2026-05-29NANJING TECH UNIV +2
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Patent Information

Application Number
CN202410411136.5
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2024-04-08
Publication Date
2026-05-29
Estimated Expiration
2044-04-08

AI Technical Summary

Technical Problem

Existing technologies struggle to efficiently utilize sulfur dioxide from industrial flue gas, particularly in the catalyst preparation process, where high costs, uneven adhesion of active components, and weak binding forces result in low efficiency in the conversion of sulfur dioxide into sulfur.

Method used

A template method was used to prepare a metal composite oxide catalyst. Using carbon fiber hollow tubes and carbon nanospheres as templates, a high-performance SO2 to sulfur nanofiber catalyst was prepared through high-temperature calcination, hydrothermal method and microwave calcination. The active components are mainly manganese oxide, cerium oxide and cobalt oxide, which improves the specific surface area of ​​the catalyst and the adhesion of the active components.

Benefits of technology

It achieves efficient catalytic reduction of sulfur dioxide to sulfur at a lower temperature, with readily available raw materials, high catalyst activity, and suitability for large-scale production. Furthermore, the active components are uniformly loaded and have strong binding force.

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Abstract

The application discloses a kind of for SO2 preparation sulphur nanofiber catalyst and preparation method and application, the catalyst with the mixture of carbon nanospheres and carbon nanofiber hollow tube as template, with manganese oxide and cerium oxide as active component, cobalt oxide as cocatalyst.First, wood is carbonized into carbon nanofiber hollow tube, then carbon nanospheres are loaded on carbon nanofiber hollow tube to form a template, then the template is combined with the active component by hydrothermal method, and finally the catalyst is prepared by removing the template by high temperature calcination.The catalyst is suitable for the use scene of converting sulfur dioxide gas into sulfur, especially suitable for industrial flue gas sulfur dioxide resource, and the process flow is simple, the conversion efficiency is high, has higher economic value and broad market application prospect.
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