Improvement of NO Selective Capture in Flue Gas by Structural Modification of Amine-Based Ni-AIP MOF

IF 3.7 2区化学 Q2 CHEMISTRY, APPLIED

Applied Organometallic Chemistry Pub Date : 2025-04-08 DOI:10.1002/aoc.70148

Han Zhang, Sisi Wang, Jingshu Ban, Hao Li, Le Ruan, Fushun Tang

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Abstract

In this paper, the NO adsorption performances of Ni-AIP MOF and Ni-AIP-BPY MOF synthesized by solvothermal method were compared, and the NO adsorption selectivity of two samples for the simulated flue gas conditions has also been studied. The results indicated that the Ni-AIP-BPY exhibited better NO adsorption performance with an NO adsorption capacity of 115.52 cc·g⁻¹ at 100 kPa and ambient temperature and showed better adsorption selectivity with the highest adsorption selectivities of 937 and 10,691 for NO/CO₂ and NO/O₂, respectively. Adsorption enthalpy calculations showed that Ni-AIP-BPY had a strong interaction force on NO, XPS and in-situ NO-FTIR results also confirmed that a strong adsorption occurred on the Ni metal center, and the main adsorptive products after NO adsorption were nitrate and nitrite. The introduction of a second ligand into the saturated coordination amine-containing complexes can improve the pore structure and coordination state of the materials, so that the complexes can activate unsaturated metal sites, thus significantly improving their adsorption and separation performance for NO gas molecules in flue gas. The results provided a new idea and understanding for the synthesis of materials for selective separation of NO components in flue gas.

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胺基Ni-AIP MOF结构改性改善烟气NO选择性捕集性能

本文比较了溶热法合成的 Ni-AIP MOF 和 Ni-AIP-BPY MOF 的氮氧化物吸附性能，并研究了两种样品在模拟烟气条件下的氮氧化物吸附选择性。结果表明，Ni-AIP-BPY 具有更好的氮氧化物吸附性能，在 100 kPa 和环境温度下的氮氧化物吸附容量为 115.52 cc-g-1，并且具有更好的吸附选择性，对 NO/CO2 和 NO/O2 的最高吸附选择性分别为 937 和 10,691。吸附焓计算表明，Ni-AIP-BPY 对 NO 有很强的相互作用力，XPS 和原位 NO-FTIR 结果也证实了 Ni 金属中心有很强的吸附作用，NO 吸附后的主要吸附产物是硝酸盐和亚硝酸盐。在含饱和配位胺的配合物中引入第二配体，可以改善材料的孔隙结构和配位状态，使配合物激活不饱和金属位点，从而显著提高其对烟气中 NO 气体分子的吸附和分离性能。这些结果为合成烟气中 NO 成分选择性分离材料提供了新的思路和认识。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Applied Organometallic Chemistry 化学-无机化学与核化学

CiteScore

7.80

自引率

10.30%

发文量

408

审稿时长

2.2 months

期刊介绍： All new compounds should be satisfactorily identified and proof of their structure given according to generally accepted standards. Structural reports, such as papers exclusively dealing with synthesis and characterization, analytical techniques, or X-ray diffraction studies of metal-organic or organometallic compounds will not be considered. The editors reserve the right to refuse without peer review any manuscript that does not comply with the aims and scope of the journal. Applied Organometallic Chemistry publishes Full Papers, Reviews, Mini Reviews and Communications of scientific research in all areas of organometallic and metal-organic chemistry involving main group metals, transition metals, lanthanides and actinides. All contributions should contain an explicit application of novel compounds, for instance in materials science, nano science, catalysis, chemical vapour deposition, metal-mediated organic synthesis, polymers, bio-organometallics, metallo-therapy, metallo-diagnostics and medicine. Reviews of books covering aspects of the fields of focus are also published.