Controllable fabrication of cuprous sites in confined spaces for efficient adsorptive desulfurization. (1st January 2020)

• Record Type: Journal Article
• Authors: Li, Shuai-Shuai; Li, Yu-Xia; Jin, Meng-Meng; Miao, Kang-Jing; Gu, Meng-Xuan; Liu, Xiao-Qin; Sun, Lin-Bing
• Is Part Of: Fuel. Volume 259(2020)
• Publication Date: 2020-01-01
• Subjects: Double solvents method -- π-complexation adsorption -- Metal-organic framework -- Desulfurization; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2019.116221
• Languages: English
• ISSNs: 0016-2361

Abstract

Highlights: Cu + can be introduced to MOFs under mild condition via OSDS strategy. The present strategy is time and energy saving for modification of MOFs with Cu + . Cu + species confined in MOFs exhibit high adsorption effect for desulfurization. Abstract: Cu + modified materials have important research significance for deep desulfurization of fuels by π-complexation adsorption. Up to now, it is still challenging to design green and mild conditioned strategy for fabricating high yield of Cu + sites. Here, we have developed a new strategy, one-step double solvents method (OSDS), which can realize fabricating high yield (~100%) of Cu + sites. Compared with traditional two-step methods including introduction of Cu 2+ precursor and conversion to Cu + such as wet impregnation method and liquid-phase reduction method, this preparation strategy make sure that all the introduced Cu 2+ was confined in MIL-101(Cr) pores and the conversion of Cu 2+ to Cu + took place in that confined spaces as well. Besides, OSDS strategy can only performed at room temperature (25 °C) which is time- and energy-efficient process considering the harsh condition of high-temperature autoreduction method. The resulting material exhibits excellent adsorption and reusability performance for deep desulfurization due to the balanced synergistic effect of suitable Cu + sites and pores of MIL-101(Cr).