To enhance dibenzothiophene (DBT) capture performance, we innovatively synthesized a series of novel multimetal–organic frameworks (MMOFs) by the incorporation of Ag⁺, Cu²⁺, Zn²⁺, and Ni²⁺ within one structure. Those novel desulfurizers have been fully characterized and their structural changes further compared in terms of nitrogen adsorption–desorption, powder X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy, inductively coupled plasma, X-ray photoelectron spectroscopy, and so forth. The DBT capture properties with as-synthesized MMOFs in different simulated fuels were evaluated through a series of batch tests. All further investigations demonstrated that the Ag/Zn/Ni/Cu-BTC exhibited a remarkably high sulfur capacity attributed to the associative effects of π-complexation and acid–base interaction. Additionally, based on sieving and inertia mechanisms, this adsorbent possessed an extremely high affinity for DBT capture in the presence of benzene and octane. Especially, the Ag/Zn/Ni/Cu-BTC could sustain an outstanding desulfurization property after the fifth cycle. Our study opens up a new perspective for the design of desirable MMOF materials, promoting their potential development in the aspects of adsorption desulfurization.

中文翻译：

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苯和辛烷存在下的多金属有机骨架增强的二苯并噻吩捕获

为了提高二苯并噻吩（DBT）的捕获性能，我们通过引入Ag ⁺，Cu 2 ⁺，Zn ²⁺和Ni ^2+来创新地合成了一系列新颖的多金属有机骨架（MMOF）。在一个结构中。这些新型脱硫剂已得到充分表征，并且在氮吸附-脱附，粉末X射线衍射，扫描电子显微镜，傅里叶变换红外光谱，感应耦合等离子体，X射线光电子能谱等方面对它们的结构变化进行了进一步比较。通过一系列批量测试，评估了在不同模拟燃料中合成的MMOF的DBT捕获性能。所有进一步的研究表明，Ag / Zn / Ni / Cu-BTC表现出非常高的硫容量，这归因于π络合和酸碱相互作用的缔合效应。此外，基于筛分和惯性机理，该吸附剂在苯和辛烷存在下对DBT捕获具有极高的亲和力。特别，在第五次循环后，Ag / Zn / Ni / Cu-BTC可以保持出色的脱硫性能。我们的研究为理想的MMOF材料的设计开辟了新的视角，促进了其在吸附脱硫方面的潜在发展。