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214 results on '"Sun, Yinyong"'

13. Refinement of pore size at sub-angstrom precision in robust metal–organic frameworks for separation of xylenes

Author

Li, Xiaolin, Wang, Juehua, Bai, Nannan, Zhang, Xinran, Han, Xue, da Silva, Ivan, Morris, Christopher G., Xu, Shaojun, Wilary, Damian M., Sun, Yinyong, Cheng, Yongqiang, Murray, Claire A., Tang, Chiu C., Frogley, Mark D., Cinque, Gianfelice, Lowe, Tristan, Zhang, Haifei, Ramirez-Cuesta, Anibal J., Thomas, K. Mark, Bolton, Leslie W., Yang, Sihai, and Schröder, Martin

Published
2020
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47. Fabrication of MOF-808(Zr) with abundant defects by cleaving Zr[sbnd]O bond for oxidative desulfurization of fuel oil.

Author

Gu, Yulong, Luo, Hongsi, Xu, Wei, Zhou, Wei, and Sun, Yinyong

Subjects
PETROLEUM as fuel, DESULFURIZATION, CATALYTIC activity, HETEROGENEOUS catalysts, METAL-organic frameworks, SURFACE area
Abstract

MOF-808(Zr) with abundant defects can be fabricated by the fracture of partial Zr O bonds in its structure by the treatment of NH 4 HCO 3 solution. The results revealed that MOF-808(Zr) obtained under the conditions of 0.08 M NH 4 HCO 3 and treatment time of 10 min exhibited superior catalytic activity (124.8 mmol/h/g) at 60 °C, which is 10.8 times as that of parent MOF-808(Zr), due to the formation of rich defect sites in MOF-808(Zr). [Display omitted] • MOF-808(Zr) with abundant defects was fabricated by the cleavage of Zr Zr-O bonds. • The number of defect sites in treated MOF-808(Zr) is increased. • The treated MOF-808(Zr) exhibited superior catalytic ODS activity. • The treated MOF-808(Zr) is a heterogeneous catalyst and can be reused. Creation of defects in metal–organic frameworks (MOFs) has been demonstrated to be of significance for many potential applications. MOF-808(Zr), as an important member of MOFs, has attracted extensive attention due to its advantages such as high stability, large surface area and pore size. Therefore, the development of defective MOF-808(Zr) is of great interest. In this contribution, we report that MOF-808(Zr) with abundant defects can be fabricated by the fracture of partial Zr O bonds in its structure by the treatment of NH 4 HCO 3 solution. During the treatment, the effect of NH 4 HCO 3 concentration and treatment time on the structural properties of MOF-808(Zr) was investigated. The catalytic performance of obtained materials was evaluated by the oxidative desulfurization reaction of dibenzothiophene. The results revealed that MOF-808(Zr) obtained under the conditions of 0.08 M NH 4 HCO 3 and treatment time of 10 min exhibited superior catalytic activity (124.8 mmol/h/g) at 60 °C due to the formation of rich defect sites in MOF-808(Zr). [ABSTRACT FROM AUTHOR]

Published
2022
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