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<p>Impregnation method is a normal and traditional method to cover some catalyst on the activated carbon surface. A new way is investigated to add the catalyst in activated carbon by catalyst-integration technology. The trend of the catalyst content with CTC (or activation time) is investigated. It is found that the catalyst content is increased with CTC and the MgO content of P-5 can be 8.9% at CTC 81. The carbons produced by catalyst-integration technology are safety, and the ignition temperature of all the produced carbons can be above 450°C. The raw carbon, C-MgO, C-KOH and the prepared carbons are all applied to benzene, toluene, butane and CTC adsorption. The results show that the prepared carbon has high loading for all VOCs, and the loading of C-MgO and C-KOH is declined in compare with raw carbon. The catalytic performance is investigated by H<sub>2</sub>S catalytic adsorption. All the produced carbon has good performance. P-3 and C-MgO has the same catalyst content, while P-3 has better catalytic performance than C-MgO. The H<sub>2</sub>S breakthrough adsorption capacity of P-5 with 8.9% MgO reaches 0.17&#xa0;g/mL. The prepared products are analyzed by N<sub>2</sub> adsorption isotherms, SEM, XRD and XPS. Carbon after impregnation can occupy some parts of its pore volume and surface area and cause the decline of physical adsorption capacity. The catalytic mechanism is investigated from the spent carbon analysis, which is attributed to dissolution-adsorption-oxidation mechanism.</p>

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Large-Scale Industrial Production of Catalyst Loaded Carbon with Excellent Catalytic Performance for H2S Conversion

  • 期刊论文

  • 发表日期：

    2025年7月12日

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  • Bin Liu,
  • Songlin Zuo

摘要

Impregnation method is a normal and traditional method to cover some catalyst on the activated carbon surface. A new way is investigated to add the catalyst in activated carbon by catalyst-integration technology. The trend of the catalyst content with CTC (or activation time) is investigated. It is found that the catalyst content is increased with CTC and the MgO content of P-5 can be 8.9% at CTC 81. The carbons produced by catalyst-integration technology are safety, and the ignition temperature of all the produced carbons can be above 450°C. The raw carbon, C-MgO, C-KOH and the prepared carbons are all applied to benzene, toluene, butane and CTC adsorption. The results show that the prepared carbon has high loading for all VOCs, and the loading of C-MgO and C-KOH is declined in compare with raw carbon. The catalytic performance is investigated by H2S catalytic adsorption. All the produced carbon has good performance. P-3 and C-MgO has the same catalyst content, while P-3 has better catalytic performance than C-MgO. The H2S breakthrough adsorption capacity of P-5 with 8.9% MgO reaches 0.17 g/mL. The prepared products are analyzed by N2 adsorption isotherms, SEM, XRD and XPS. Carbon after impregnation can occupy some parts of its pore volume and surface area and cause the decline of physical adsorption capacity. The catalytic mechanism is investigated from the spent carbon analysis, which is attributed to dissolution-adsorption-oxidation mechanism.