A facile approach to prepare Cu(I) based adsorbents for selective CO adsorption with excellent oxidation resistance ability

IF 2.5 4区材料科学 Q2 CHEMISTRY, APPLIED

Journal of Porous Materials Pub Date : 2024-05-29 DOI:10.1007/s10934-024-01639-z

Faju Zhuang, Shougui Wang, Guanghui Chen, Fei Gao, Jingru Dou, Jipeng Dong

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Abstract

Cu(I)-based adsorbents are currently the most commonly used CO adsorbents due to their high adsorption capacity and adsorption selectivity for CO. In order to achieve a facile preparation and improved antioxidant performance of Cu(I)-based adsorbents, in this work, a series of Cu(I) based CO adsorbents were designed and prepared by choosing CuCl₂ as the precursor, ultra-stable Y-type molecular sieves (USY) as the support, and methyl cellulose (MC) as a solid reductant. The MC introduction not only can reduce the precursor CuCl₂ to the active component CuCl, but also play a key role in improving the antioxidant performance of the adsorbent. The optimized adsorbent CuCl(5.0)@USY-MC(8%) exhibits an excellent antioxidant performance, maintaining 76% of CO adsorption capacity of fresh adsorbent after being placed in the air for 24 h. In addition, the adsorbent shows the high adsorption capacity, adsorption selectivity and good cycling stability for CO. The excellent CO adsorption performance as well as good antioxidant ability make the developed adsorbent a promising candidate for the efficient CO adsorption and separation from the gas mixture.

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制备具有优异抗氧化能力的选择性 CO 吸附铜（I）基吸附剂的简便方法

Cu(I)基吸附剂因其对 CO 的高吸附容量和吸附选择性而成为目前最常用的 CO 吸附剂。为了实现Cu(I)基吸附剂的简便制备并提高其抗氧化性能，本研究以CuCl2为前驱体，超稳定Y型分子筛（USY）为载体，甲基纤维素（MC）为固体还原剂，设计并制备了一系列Cu(I)基CO吸附剂。甲基纤维素的引入不仅能将前驱体 CuCl2 还原成活性组分 CuCl，而且对提高吸附剂的抗氧化性能起着关键作用。优化后的吸附剂 CuCl(5.0)@USY-MC(8%)具有优异的抗氧化性能，在空气中放置 24 小时后仍能保持新鲜吸附剂 76% 的 CO 吸附能力。优异的 CO 吸附性能和良好的抗氧化能力使所开发的吸附剂有望成为从混合气体中高效吸附和分离 CO 的候选材料。

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来源期刊

Journal of Porous Materials 工程技术-材料科学：综合

CiteScore

4.80

自引率

7.70%

发文量

203

审稿时长

2.6 months

期刊介绍： The Journal of Porous Materials is an interdisciplinary and international periodical devoted to all types of porous materials. Its aim is the rapid publication of high quality, peer-reviewed papers focused on the synthesis, processing, characterization and property evaluation of all porous materials. The objective is to establish a unique journal that will serve as a principal means of communication for the growing interdisciplinary field of porous materials. Porous materials include microporous materials with 50 nm pores. Examples of microporous materials are natural and synthetic molecular sieves, cationic and anionic clays, pillared clays, tobermorites, pillared Zr and Ti phosphates, spherosilicates, carbons, porous polymers, xerogels, etc. Mesoporous materials include synthetic molecular sieves, xerogels, aerogels, glasses, glass ceramics, porous polymers, etc.; while macroporous materials include ceramics, glass ceramics, porous polymers, aerogels, cement, etc. The porous materials can be crystalline, semicrystalline or noncrystalline, or combinations thereof. They can also be either organic, inorganic, or their composites. The overall objective of the journal is the establishment of one main forum covering the basic and applied aspects of all porous materials.