One pot microwave synthesis of MCM-41/Cu based MOF composite with improved CO2 adsorption and selectivity

Published Date
Received 26 February 2016, Revised 14 May 2016, Accepted 21 May 2016, Available online 24 May 2016.

Author
Nesa EsmaeilianTaria. Numbers and letters correspond to the affiliation list. Click to expose these in author workspace. Author links open the author workspace.AzadehTadjarodia. Numbers and letters correspond to the affiliation list. Click to expose these in author workspaceOpens the author workspaceOpens the author workspace. Author links open the author workspace.JavadTamnanloob. Numbers and letters correspond to the affiliation list. Click to expose these in author workspace. Author links open the author workspace.ShohrehFatemib. Numbers and letters correspond to the affiliation list. Click to expose these in author workspace

a

Research Laboratory of Inorganic Materials Synthesis, Department of Chemistry, University of Science and Technology, 16846-13114 Tehran, Iran

b

School of Chemical Engineering, College of Engineering, University of Tehran, Enghelab Avenue, 11365-4563 Tehran, Iran

Highlights

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New composite materials have been synthesized based on MCM-41 and Cu(BDC) MOF.

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Synthesized composites were studied for selective adsorption of CO2 over CH4.

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Composites were synthesized in one pot method by using microwave radiation.

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The studies proved composite durability for physical adsorption of CO2.

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The composite demonstrated an improved CO2/CH4 selectivity about 30% than MCM-41.

Abstract

The MCM-41@ Cu(BDC) composite material was synthesized via a facile and fast microwave method. MCM-41 was used as matrix which composed by Cu(BDC) MOF. The effect of molar ratio of the metal salt to MCM-41 substrate was investigated. The synthesized composites were characterized by means of FTIR analysis, X-ray diffraction (XRD), Scanning electron microscopy (SEM), Thermogravimetric analysis (TGA), N2 adsorption-desorption isotherms and Transmission electron microscopy (TEM). The adsorption capacities of the samples were measured by a volumetric method at ambient temperature and the pressure range of 1–25 bar. The composite material with molar ratio of 1:8 (metal ion: MCM-41) demonstrated a 30% increase in CO2/CH4 selectivity and 20% increase in adsorption capacity compared to MCM-41. The stability investigation of the composite in consecutive adsorption-desorption cycles showed no significant loss in adsorption capacity.

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