Construction of a Ti-Based Bimetallic Metal–Organic Framework Using a One-Pot Method for Efficient C2H2/C2H4 and C2H2/CO2 Separation

Suhui Liu; Xiaomin Li; Xiaoqing Wang; Ye Li; Feifei Zhang; Libo Li; Jinping Li; Jiangfeng Yang

doi:10.1021/cbe.3c00037

Chem & Bio Engineering (Jan 2024)

Construction of a Ti-Based Bimetallic Metal–Organic Framework Using a One-Pot Method for Efficient C2H2/C2H4 and C2H2/CO2 Separation

Suhui Liu,
Xiaomin Li,
Xiaoqing Wang,
Ye Li,
Feifei Zhang,
Libo Li,
Jinping Li,
Jiangfeng Yang

Affiliations

Suhui Liu: Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, Shanxi, China
Xiaomin Li: Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, Shanxi, China
Xiaoqing Wang: Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, Shanxi, China
Ye Li: Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, Shanxi, China
Feifei Zhang: Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, Shanxi, China
Libo Li
Jinping Li: Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, Shanxi, China
Jiangfeng Yang: Shanxi Key Laboratory of Gas Energy Efficient and Clean Utilization, College of Chemical Engineering and Technology, Taiyuan University of Technology, Taiyuan, Shanxi, China

DOI: https://doi.org/10.1021/cbe.3c00037
Journal volume & issue: Vol. 1, no. 5
pp. 439 – 447

Abstract

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Titanium (Ti)-based metal-organic frameworks (Ti-MOFs) have attracted intensive research attention due to their low toxicity and high abundance of titanium. However, limited by the high reactivity of titanium species in the reaction system, the construction of Ti-MOFs still faces great challenges. Herein, we successfully introduced Ti into MOF-74 using a one-pot method. Powder X-ray diffraction (PXRD) combined with X-ray photoelectron spectroscopy (XPS) and inductively coupled plasma (ICP) spectroscopy confirmed that the Ti(IV) ions were uniformly inserted into the MOF-74 structure. Our scanning electron microscopy (SEM)/energy-dispersive spectrometry (EDS) analysis showed that the Ti content was up to 44% with good sample homogeneity. The adsorption selectivity of Ti0.44/Ni0.56-MOF-74 at 1.0 bar and 298 K for C2H2/C2H4 and C2H2/CO2 (50/50, v/v) mixtures was 4.9 and 6.8, respectively, which are higher than that of pristine Ni-MOF-74. The results of our breakthrough simulation experiments revealed that the adsorption and separation performances of Ti0.44/Ni0.56-MOF-74 were greatly improved. This study provided insights for the construction of Ti-based bimetallic MOFs used for the separation of light hydrocarbons.

Published in Chem & Bio Engineering

ISSN: 2836-967X (Online)
Publisher: American Chemical Society
Country of publisher: United States
LCC subjects: Technology: Chemical technology: Chemical engineering; Technology: Chemical technology: Biotechnology
Website: https://pubs.acs.org/journal/cbehb5

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