金属-有机框架凝胶制粒法去除天然气凝析液中的高砷

IF 4.8 3区材料科学 Q1 CHEMISTRY, APPLIED

Microporous and Mesoporous Materials Pub Date : 2025-05-25 DOI:10.1016/j.micromeso.2025.113707

Phakawan Thinsoongnoen , Wiphada Jansuda , Sirawee Maneewan , Sasimaporn Ampawan , Sunatda Arayachukiat , Kanokwan Kongpatpanich

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引用次数: 0

摘要

金属有机骨架（MOFs）的实际应用往往受到其加工性差和难以形成坚固宏观结构的限制。在这项研究中，我们报告了微波辅助，一锅合成可处理的UiO-66凝胶（PU66-G），以聚对苯二甲酸乙二醇酯（PET）废物为前驱体。PU66-G表现出1225 m2 g−1的高比BET表面积和Zr6节点缺陷密度的增加，这是其对As（III）的214.1 mg g−1和As(V)的312.7 mg g−1的优异吸附能力的重要原因。值得注意的是，PU66-G独特的流变特性有助于其转化为具有优异机械稳定性的无粘结剂颗粒。这些颗粒在实际天然气凝析油中的砷去除效率达到93.35%，与粉末形式（96.43%）相比，性能损失最小。此外，颗粒具有良好的可重复使用性，在20个操作循环后，颗粒的去除率保持在88.29%，结构降解明显。通过同时解决UiO-66的可处理性限制和PET废物的增值，本研究确定了PU66-G作为可扩展的高性能吸附剂用于砷净化非极性体系。

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Pelletization of metal-organic framework gel for high arsenic removal in natural gas condensate

The practical deployment of metal-organic frameworks (MOFs) is often limited by their poor processability and difficulty in forming robust macrostructures. In this study, we report a microwave-assisted, one-pot synthesis of processable UiO-66 gel (PU66-G) using polyethylene terephthalate (PET) waste as a precursor. PU66-G exhibited a high specific BET surface area of 1225 m² g⁻¹ and an increased defect density at Zr₆ nodes, significantly contributing to its superior arsenic adsorption capacities of 214.1 mg g⁻¹ for As(III) and 312.7 mg g⁻¹ for As(V). Notably, the unique rheological properties of PU66-G facilitate its transformation into binder-free pellets with excellent mechanical stability. These pellets achieved 93.35 % arsenic removal efficiency in real natural gas condensates, with only minimal performance loss compared to the powder form (96.43 %). Moreover, the pellets demonstrated excellent reusability, maintaining 88.29 % removal efficiency after 20 operating cycles with noticeable structural degradation. By simultaneously addressing the processability limitations of UiO-66 and the valorization of PET waste, this study establishes PU66-G as a scalable and high-performance adsorbent for arsenic decontamination nonpolar systems.

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来源期刊

Microporous and Mesoporous Materials 化学-材料科学：综合

CiteScore

10.70

自引率

5.80%

发文量

649

审稿时长

26 days

期刊介绍： Microporous and Mesoporous Materials covers novel and significant aspects of porous solids classified as either microporous (pore size up to 2 nm) or mesoporous (pore size 2 to 50 nm). The porosity should have a specific impact on the material properties or application. Typical examples are zeolites and zeolite-like materials, pillared materials, clathrasils and clathrates, carbon molecular sieves, ordered mesoporous materials, organic/inorganic porous hybrid materials, or porous metal oxides. Both natural and synthetic porous materials are within the scope of the journal. Topics which are particularly of interest include: All aspects of natural microporous and mesoporous solids The synthesis of crystalline or amorphous porous materials The physico-chemical characterization of microporous and mesoporous solids, especially spectroscopic and microscopic The modification of microporous and mesoporous solids, for example by ion exchange or solid-state reactions All topics related to diffusion of mobile species in the pores of microporous and mesoporous materials Adsorption (and other separation techniques) using microporous or mesoporous adsorbents Catalysis by microporous and mesoporous materials Host/guest interactions Theoretical chemistry and modelling of host/guest interactions All topics related to the application of microporous and mesoporous materials in industrial catalysis, separation technology, environmental protection, electrochemistry, membranes, sensors, optical devices, etc.