PREPARATION OF MIL-101 METAL-ORGANIC FRAME ADSORBENT MODIFIED BY TRANSITION METAL AND YTTRIUM AND ITS ADSORPTION DESULFURIZATION PERFORMANCE

JIANG Bolong; JIANG Nan; TAN Weiqiang

doi:10.13205/j.hjgc.202412016

Volume 42 Issue 12

Dec. 2024

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JIANG Bolong, JIANG Nan, TAN Weiqiang. PREPARATION OF MIL-101 METAL-ORGANIC FRAME ADSORBENT MODIFIED BY TRANSITION METAL AND YTTRIUM AND ITS ADSORPTION DESULFURIZATION PERFORMANCE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 126-135. doi: 10.13205/j.hjgc.202412016

Citation:

JIANG Bolong, JIANG Nan, TAN Weiqiang. PREPARATION OF MIL-101 METAL-ORGANIC FRAME ADSORBENT MODIFIED BY TRANSITION METAL AND YTTRIUM AND ITS ADSORPTION DESULFURIZATION PERFORMANCE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 126-135. doi: 10.13205/j.hjgc.202412016

Citation:

JIANG Bolong, JIANG Nan, TAN Weiqiang. PREPARATION OF MIL-101 METAL-ORGANIC FRAME ADSORBENT MODIFIED BY TRANSITION METAL AND YTTRIUM AND ITS ADSORPTION DESULFURIZATION PERFORMANCE[J]. ENVIRONMENTAL ENGINEERING , 2024, 42(12): 126-135. doi: 10.13205/j.hjgc.202412016

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PREPARATION OF MIL-101 METAL-ORGANIC FRAME ADSORBENT MODIFIED BY TRANSITION METAL AND YTTRIUM AND ITS ADSORPTION DESULFURIZATION PERFORMANCE

doi: 10.13205/j.hjgc.202412016

1. College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China;
2. Institute of Environmental and Municipal Engineering, Qingdao University of Technology, Qingdao 266000, China

Received Date: 2023-07-17
Available Online: 2025-01-18

Abstract

Abstract

Sulfur-containing compounds released from the combustion of fuel oil have led to serious environmental pollution and ecological deterioration. In this study, a transition metal TM-Y/MIL-101 (TM=Ni, Ag and Cu) adsorbent was prepared, where transition metal (Ni, Ag and Cu) and rare earth element yttrium were selected as exchange ions for modification. The structure, morphology and metal valence of as-prepared adsorbents were characterized. Thiophene was selected to investigate the desulfurization performance of the prepared adsorbents. Langmuir and Freundlich models were used to analyze the adsorption equilibrium properties of thiophene with different adsorbents, study the adsorption kinetics and mechanism, and investigate the control steps of the adsorption rate. Results showed that TM-Y/MIL-101 adsorbents modified by different TMs had maintained the lattice structure of MIL-101, and Cu and Ag existed with a valence of +1, while Ni existed with a valence of +2. Furthermore, the rare earth metal Y existed in the valence state of +3. The adsorption process of thiophene by TM-Y/MIL-101 complied with the Langmuir model and the Cu-Y/MIL-101 possessed the highest adsorption capacity (28.2 mg/g) and anti-aromatic adsorption desulfurization selectivity. Their adsorption performance decreased in the order of Cu-Y/MIL-101 > Ag-Y/MIL-101 > Ni-Y/MIL-101. Both pseudo-first and second-order could describe the adsorption of thiophene onto TM-Y/MIL-101. The mass transfer was found to be the control step of the adsorption process, which was controlled by the film diffusion and internal diffusion of adsorbate. The fast adsorption of thiophene molecule on TM-Y/MIL-101 could be ascribed to the S-M interaction between Y³⁺ and S in thiophene, π complexation between transition metal ions (Ni²⁺, Ag⁺ and Cu⁺) and thiophene ring, and π-π interaction between aromatic rings of MIL-101 and thiophene molecule.
- adsorptive desulfurization,
- transition metal,
- rare earth metal,
- yttrium,
- thiophene,
- adsorption equilibrium,
- thermodynamic

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References(29)

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