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双金属负载氧化铝固体酸催化CO2有机胺富液解吸性能
Catalytic performances of bimetal-loaded
γ -Al2O3 solid acids for CO2 desorption from rich amine solution- 低碳化学与化工 2025: 1-10.
- 作者机构：
1.上海交通大学 智慧能源创新学院，上海 200240
2.中国船舶集团有限公司第七一一研究所，上海 201108
3.上海交通大学 机械与动力工程学院，上海 200240
- 作者简介：
邱微（2000—），硕士研究生，研究方向为碳捕集催化解吸技术，E-mail：qw2339149409@sjtu.edu.cn。
张毅然（1992—），博士，副教授，研究方向为碳捕集与利用，E-mail：zhangyiran@sjtu.edu.cn。
- 基金信息：国家重点研发计划(2022YFE0208900)
DOI：10.12434/j.issn.2097-2547.20240407
中图分类号： TQ426-
网络出版日期：2025-01-13，
收稿日期：2024-10-05，
修回日期：2024-10-26，
- 稿件说明：
移动端阅览
邱微, 宁一睿, 赵澍, 等. 双金属负载氧化铝固体酸催化CO2有机胺富液解吸性能[J/OL]. 低碳化学与化工, 2025,1-10.
QIU WEI, NING YIRUI, ZHAO SHU, et al. Catalytic performances of bimetal-loaded
γ -Al2O3 solid acids for CO2 desorption from rich amine solution. [J/OL]. Low-carbon chemistry and chemical engineering, 2025, 1-10.邱微, 宁一睿, 赵澍, 等. 双金属负载氧化铝固体酸催化CO2有机胺富液解吸性能[J/OL]. 低碳化学与化工, 2025,1-10. DOI： 10.12434/j.issn.2097-2547.20240407.
QIU WEI, NING YIRUI, ZHAO SHU, et al. Catalytic performances of bimetal-loaded
γ -Al2O3 solid acids for CO2 desorption from rich amine solution. [J/OL]. Low-carbon chemistry and chemical engineering, 2025, 1-10. DOI： 10.12434/j.issn.2097-2547.20240407.
摘要
有机胺溶液吸收法是一种前景广阔的CO
2
捕集技术，但高再生能耗导致该方法的成本较高。开发高催化活性和稳定性的固体酸催化剂是降低有机胺溶液再生能耗的重要途径。以
γ
-Al
2
O
3
为载体，采用浸渍法制备了一系列双金属负载氧化铝固体酸催化剂ZrM/
γ
-Al
2
O
3
（M = Ni、Fe、Ce或Cu，Zr和M质量分数均为10%），并对其在富CO
2
单乙醇胺溶液（MEA富液）中的催化解吸性能和作用机理等进行了研究。结果表明，在解吸温度为91 ℃、搅拌速率为500 r/min和MEA富液CO
2
负载量为0.5 mol/mol的条件下，ZrNi/
γ
-Al
2
O
3
具有最优的催化解吸性能，其CO
2
解吸速率峰值、CO
2
解吸量和相对能耗（与未加入催化剂的空白组相比）分别为1.92 mmol/min、46.53 mmol和55.04%。在吸收温度为40 °C、解吸温度为92 °C下经历8次吸收-解吸循环后，ZrNi/
γ
-Al
2
O
3
仍具有较好的催化解吸性能，其作用下MEA富液的再生能耗较空白组仍降低了23%左右，因此ZrNi/
γ
-Al
2
O
3
循环稳定性良好。XRD、N
2
吸/脱附、NH
3
-TPD和Py-IR等表征结果显示，ZrM/
γ
-Al
2
O
3
具有适宜的织构性质和酸性，其丰富的B酸和L酸位点在MEA富液的催化解吸过程中发挥了关键作用。
Abstract
The amine-based absorption method is a promising technology for CO
2
capture
but the high regeneration energy consumption increases its costs. Developing solid acid catalysts with high catalytic activity and stability is a key approach to reducing the regeneration energy consumption of amine solutions. A series of bimetal-loaded
γ
-Al
2
O
3
solid acid catalysts ZrM/
γ
-Al
2
O
3
(M = Ni
Fe
Ce or Cu
mass fractions of Zr and M both are 10%) were prepared by loading two types of metals on the support
γ
-Al
2
O
3
usi
ng the impregnation method. And the catalytic desorption performances and mechanisms of the catalysts in monoethanolamine rich solution with CO
2
(MEA rich solution) were investigated. The results show that under the conditions of desorption temperature of 91 ℃
stirring rate of 500 r/min and CO
2
loading of 0.5 mol/mol
ZrNi/
γ
-Al
2
O
3
exhibits the most favorable catalytic desorption performance. Specifically
the peak CO
2
desorption rate
CO
2
total desorption amount and relative energy consumption (compared to the blank group without catalyst) catalyzed by ZrNi/
γ
-Al
2
O
3
are 1.92 mmol/min
46.53 mmol and 55.04%
respectively. After eight absorption-desorption cycles at 40 ℃ for absorption and 92 ℃ for desorption
ZrNi/
γ
-Al
2
O
3
maintains good catalytic desorption performance with reducing the regeneration energy consumption of MEA rich solution by approximately 23% compared to the blank group. This indicates that ZrNi/
γ
-Al
2
O
3
possesses good cyclic stability. The characterization results of XRD
N
2
adsorption/desorption
NH
3
-TPD and Py-IR show that ZrM/
γ
-Al
2
O
3
catalysts demostrates suitable textural properties and acidity. The abundant Brønsted and Lewis acid sites play critical role in the catalytic desorption process of MEA rich solutions.
关键词
CO2捕集催化解吸双金属负载氧化铝固体酸催化剂解吸机理
Keywords
CO2 capturecatalytic desorptionbimetallic supported γ-Al2O3solid acid catalystsdesorption mechanism
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