基于钢渣元素的铁钙基双功能材料吸附增强水气变换制氢

钟涵琪; 岑望来; 肖鑫

doi:10.12434/j.issn.2097-2547.20250006

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基于钢渣元素的铁钙基双功能材料吸附增强水气变换制氢

碳一路线氢气制取与利用 | 更新时间：2025-05-29

- 基于钢渣元素的铁钙基双功能材料吸附增强水气变换制氢
- Adsorption enhancement of water-gas shift to produce hydrogen of iron-calcium-based dual-functional materials based on steel slag
- 低碳化学与化工 2025, 50(5): 155-162.
- 作者机构：
  
  1.四川大学新能源与低碳技术研究院，四川成都 610207
  2.四川大学碳中和未来技术学院，四川成都 610207
- 作者简介：
  
  钟涵琪（2001—），硕士研究生，研究方向为能源环境工程，E-mail：zhongh7@126.com。
  岑望来（1981—），博士，副研究员，博士研究生导师，研究方向为能源环境材料计算模拟，E-mail：cenwanglai@scu.edu.cn；
  肖鑫（1993—），博士，助理研究员，研究方向为二氧化碳及生物质转化，E-mail：xiaoxin93@scu.edu.cn。
- 基金信息：
  
  四川省科技计划(2023ZYD0174);四川大学天府永兴实验室项目(2024KJGG22)
- DOI：10.12434/j.issn.2097-2547.20250006
  中图分类号： TQ426
- 收稿日期：2025-01-07，
  
  修回日期：2025-03-03，
  
  纸质出版日期：2025-05-25
- 稿件说明：
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钟涵琪,岑望来,肖鑫.基于钢渣元素的铁钙基双功能材料吸附增强水气变换制氢[J].低碳化学与化工,2025,50(5):155-162.

ZHONG Hanqi,CEN Wanglai,XIAO Xin.Adsorption enhancement of water-gas shift to produce hydrogen of iron-calcium-based dual-functional materials based on steel slag[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(5):155-162.
钟涵琪,岑望来,肖鑫.基于钢渣元素的铁钙基双功能材料吸附增强水气变换制氢[J].低碳化学与化工,2025,50(5):155-162. DOI： 10.12434/j.issn.2097-2547.20250006.

ZHONG Hanqi,CEN Wanglai,XIAO Xin.Adsorption enhancement of water-gas shift to produce hydrogen of iron-calcium-based dual-functional materials based on steel slag[J].Low-Carbon Chemistry and Chemical Engineering,2025,50(5):155-162. DOI： 10.12434/j.issn.2097-2547.20250006.

摘要

为应对水气变换制氢过程中CO

大量排放的问题，可利用铁钙基吸附/催化双功能材料原位吸附CO

，提高水气变换反应的制氢脱碳效率。以钢渣所含元素作为材料组成元素，采用共沉淀法制备了Fe

/CaO-MAM样品（

(Ca)/

(Fe)）。通过XRD、N

物理吸/脱附、CO

-TPD和TG等对样品的物相组成、织构性质、碱度、碱性位点数量和CO

吸附性能进行了表征，并利用固定床反应器研究了样品在水气变换中的吸附/催化性能。结果表明，Fe

/CaO-MAM的碱性位点最多，CO

吸附容量最大（0.105 g/g），且10次循环后CO

吸附容量仅下降23%。在温度600 ℃、常压、

O)/

(CO) = 6、混合气流量100 mL/min（

(CO) = 4%，

) = 46%，

(Ar) = 50%）条件下反应2 h，Fe

/CaO-MAM表现出最优的吸附/催化性能，其CO平均转化率和H

平均产率均达到84.24%，H

选择性为100%，产物气中CO

平均占比（体积分数）为18.05%，预穿透阶段持续时长达2 h。

Abstract

In order to address the i

ssue of significant CO

emissions during the water-gas shift to produce hydrogen

iron-calcium-based dual-functional materials can be utilized for in situ CO

adsorption

enhancing the efficiency of hydrogen production and decarbonization in water-gas shift reaction. Fe

/CaO-MAM samples (

(Ca)/

(Fe)) with elements derived from steel slag were prepared by co-precipitation method. The phase compositions

textural properties

alkalinities

numbers of alkaline sites and CO

adsorption properties of the samples were characterized by XRD

physical adsorption/desorption

-TPD

TG and so on. The adsorption/catalysis performances of the samples in water-gas shift were studied by a fixed-bed reactor. The results show that Fe

/CaO-MAM exhibits the most alkaline sites and the highest CO

adsorption capacity (0.105 g/g)

and the CO

adsorption capacity only decreases by 23% after ten cycles. Under the temperature of 600 ℃

atmospheric pressure

O)/

(CO) = 6 and the mixed gas (

(CO) = 4%

) = 46% and

(Ar) = 50%) flow rate of 100 mL/min

/CaO-MAM shows the best adsorption/catalysis performance after reaction for 2 h

with CO average conversion rate and H

average yield both reaching 84.24% and H

average selectivity of 100%. The average proportion (volume fraction) of CO

in the product gas is 18.05%

and the pre-penetration stage lasts up to 2 h.

关键词

Keywords

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