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在Cu₂上对CO₂吸附的协同增强通过铁和聚乙烯胺加载通过Cu₂(OH) PO₄

Deqiang Zhao¹, Heng Lu², Qi Huang²

¹School of River and Ocean Engineering, Chongqing Jiaotong University, Chongqing 400074, China; Key Laboratory of Hydraulic and Waterway Engineering of the Ministry of Education, and National Engineering Research Center for Inland Waterway Regulation, Chongqing, China; Department of Materials and Environmental Chemistry, Stockholm University, SE-106 91 Stockholm, Sweden.

Environmental research

|September 16, 2025

概括

一种含有聚乙烯胺 (PEI) 的新型Fe合铜酸盐吸收剂显示了高效的二氧化碳捕获效率. 通过响应表面方法的优化确定了流速作为关键,产生了稳定,可回收的碳捕获材料.

科学领域:

材料科学材料科学材料科学
环境化学环境化学
化学工程是化学工程的重要组成部分.

背景情况:

开发有效的二氧化碳 (CO2) 捕获吸附剂对于缓解气候变化至关重要.
富含聚乙烯胺 (PEI) 的金属酸盐由于其高表面积和氨基功能而具有潜力.

研究的目的:

为了合成和表征一种新的Fe-doped Cu2(OH) PO4吸附剂,用PEI修改为CO2吸附剂.
使用响应表面方法 (RSM) 来优化吸附参数,并评估吸附剂的性能和稳定性.

主要方法:

物理浸被用于合成Fe-doped Cu2(OH) PO4@PEI吸附剂.
鉴定包括XRD,FT-IR,SEM,XPS和N2吸附技术.
采用RSM (Box-Behnken设计) 来优化Fe剂,PEI负载,温度和流量.

主要成果:

最优的吸附剂 (8%Fe-Cu2(OH) PO4@50%PEI) 在60°C和30毫升/分钟时达到3.95毫摩尔/克的二氧化碳吸附能力.
流量是RSM发现的最有影响力的参数.
吸附剂在20个循环中表现出极好的稳定性,容量损失最小 (0.35 mmol/g).

结论:

化Cu2(OH) PO4@PEI吸附剂表现出高效率和可回收性,用于捕获二氧化碳.
铁兴奋剂和PEI负载之间的协同效应提高了吸附性能.
动力学和热力学分析表明无障碍,外热,自发和驱动的单层吸附.

关键词:

碳二氧化碳 (CO2) 吸附方式循环再生是一种循环再生.铁添加的Cu(2)(OH)PO(4)@PEII 已经使用了.响应表面的方法响应表面方法有协同效应的效应.

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