<trans-title xml:lang="en">Effect of Cu/Mg Ratio on CO<sub>2</sub> Adsorption Performance of Cu/Mg-MOF-74 </trans-title>

Jie LING; Anning ZHOU; Wenzhen WANG; Xinyu JIA; Mengdan MA

doi:10.15541/jim20230224

Journal of Inorganic Materials, Volume. 38, Issue 12, 1379(2023)

Effect of Cu/Mg Ratio on CO₂ Adsorption Performance of Cu/Mg-MOF-74

Jie LING^1,2, Anning ZHOU^1、*, Wenzhen WANG^3、*, Xinyu JIA¹, and Mengdan MA¹

Author Affiliations

¹1. College of Chemistry & Chemical Engineering, Xi’an University of Science and Technology, Xi’an 710054, China

²2. College of Coal & Chemical Industry, Shaanxi Energy Institute, Xianyang 712000, China

³3. College of Chemistry & Chemical Engineering, Xi’an Shiyou University, Xi’an 710065, China

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Figures & Tables(11)

1. Schematic and photo of photocatalytic reactor

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2. Adsorption isotherms of CO₂ and N₂ of Cu/Mg-MOF-74 at 100 kPa

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3. Effect of Cu/Mg ratio on adsorption selectivity of Cu/Mg-MOF-74 in simulated flue gas at 303.15 K

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4. Relationship between pore structure and CO₂, N₂ uptake of Cu/Mg-MOF-74

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5. Adsorption process of CO₂ on Cu/Mg-MOF-74 in simulated flue gas

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S1. CO₂-TPD of Cu/Mg-MOF-74

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S2. Langmuir-Freundlich fitting model of Cu/Mg-MOF-74 at 303.15 K

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S3. (a) CO₂ adsorption isotherm at 273.15 K and (b) pore size distribution of Cu/Mg-MOF-74

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Table 1. Langmuir-Freundlich parameters of CO₂ and N₂ uptake on Cu/Mg-MOF-74 at 303.15 K and different Cu/Mg ratios

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Table 1. Langmuir-Freundlich parameters of CO₂ and N₂ uptake on Cu/Mg-MOF-74 at 303.15 K and different Cu/Mg ratios

Parameter		1/0	0.83/0.17	0.8/0.2	0.6/0.4	0.22/0.78	0.1/0.9	0/1
CO₂	Q_sat/(mmol·g⁻¹)	11.11	19.03	23.33	44.74	7.44	10.65	9.49
	b	1.75×10⁻³	2.50×10⁻³	7.31×10⁻³	1.55×10⁻²	1.62×10⁻¹	1.83×10⁻¹	1.99×10⁻¹
	c	0.959	0.837	0.621	0.391	0.498	0.486	0.522
	R²	0.9999	0.9999	0.9991	0.9978	0.9952	0.9936	0.9939
N₂	Q_sat/(mmol·g⁻¹)	0.47	0.36	0.57	1.06	1.83	2.65	0.90
	b	2.17×10⁻³	3.09×10⁻³	2.70×10⁻³	2.90×10⁻³	2.08×10⁻³	2.24×10⁻³	3.25×10⁻³
	c	1.16	1.24	1.52	1.08	1.075	1.06	1.17
	R²	0.9999	0.9997	0.9998	0.9999	0.9999	0.9999	0.9998

Table 1. Photocatalytic properties of Cu/Mg-MOF-74
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Table 1. Photocatalytic properties of Cu/Mg-MOF-74
Product Yield/(μmol·h⁻¹·g_cat⁻¹)
1/0 0.83/0.17 0.8/0.2 0.6/0.4 0.22/0.78 0.1/0.9 0/1
CO 3.60 6.6 10.07 10.65 8.45 5.65 -
H₂ 1.68 1.895 2.04 5.41 5.07 4.36 -

Table 2. Pore structure of Cu/Mg-MOF-74 according to different Cu/Mg ratios

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Table 2. Pore structure of Cu/Mg-MOF-74 according to different Cu/Mg ratios

Parameter		1/0	0.83/0.17	0.8/0.2	0.6/0.4	0.22/0.78	0.1/0.9	0/1
N₂adsorption	V_Total/(cm³·g^-1)^a	0.336	0.332	0.360	0.428	0.492	0.556	0.456
	V_Mic/(cm³·g^-1)^a	0.265	0.257	0.304	0.362	0.438	0.520	0.435
	S_Total/(m²·g^-1)^a	1035	1013	1235	1562	1917	2395	1611
	S_Mic/(m²·g^-1)^a	1020	996	1223	1533	1889	2371	1590
	d₁/ nm^b	0.774	0.769	0.760	0.767	0.763	0.763	0.751
CO₂adsorption	UV_Mic/(cm³·g^-1)^c	0.143	0.027	0.0735	0.181	0.246	0.322	0.129
	US_Mic/(m²·g^-1)^c	796.2	151.9	422.0	1003	1376	1800	714.7
	d₂/nm^b	0.612	0.699	0.681	0.612	0.555	0.539	0.578

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Jie LING, Anning ZHOU, Wenzhen WANG, Xinyu JIA, Mengdan MA. Effect of Cu/Mg Ratio on CO₂ Adsorption Performance of Cu/Mg-MOF-74 [J]. Journal of Inorganic Materials, 2023, 38(12): 1379

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Paper Information

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Received: May. 10, 2023

Accepted: --

Published Online: Mar. 6, 2024

The Author Email: ZHOU Anning (psu564@139.com), WANG Wenzhen (wzwang@xsyu.edu.cn)

DOI:10.15541/jim20230224

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Table 1. Langmuir-Freundlich parameters of CO2 and N2 uptake on Cu/Mg-MOF-74 at 303.15 K and different Cu/Mg ratios

Table 1. Langmuir-Freundlich parameters of CO2 and N2 uptake on Cu/Mg-MOF-74 at 303.15 K and different Cu/Mg ratios

Table 1. Photocatalytic properties of Cu/Mg-MOF-74

Table 1. Photocatalytic properties of Cu/Mg-MOF-74

Table 2. Pore structure of Cu/Mg-MOF-74 according to different Cu/Mg ratios

Table 2. Pore structure of Cu/Mg-MOF-74 according to different Cu/Mg ratios

Table 1. Langmuir-Freundlich parameters of CO₂ and N₂ uptake on Cu/Mg-MOF-74 at 303.15 K and different Cu/Mg ratios

Table 1. Langmuir-Freundlich parameters of CO₂ and N₂ uptake on Cu/Mg-MOF-74 at 303.15 K and different Cu/Mg ratios