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Materials 2017, 10(6), 610; doi:10.3390/ma10060610

The Preparation of Porous Sol-Gel Silica with Metal Organic Framework MIL-101(Cr) by Microwave-Assisted Hydrothermal Method for Adsorption Chillers

1
Centre for Precision Analysis and Research Center, National Taipei University of Technology, Taipei 106, Taiwan
2
Department of Chemical Engineering, National Taipei University of Technology, Taipei 106, Taiwan
*
Authors to whom correspondence should be addressed.
Academic Editor: Jordi Sort
Received: 29 March 2017 / Revised: 26 May 2017 / Accepted: 29 May 2017 / Published: 2 June 2017
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Abstract

Abstract: Metal organic framework (MOF) of MIL-101(Cr)-Silica (SiO2) composites with highly mesoporous and uniform dispersions were synthesized by a microwave-assisted hydrothermal method followed by the sol-gel technique. Water vapor adsorption experiments were conducted on the MIL-101(Cr)-SiO2 composites for industrial adsorption chiller applications. The effects of MIL-101(Cr)-SiO2 mixing ratios (ranging from 0% to 52%), the surface area and amount of Lewis and Brønsted sites were comprehensively determined through water vapor adsorption experiments and the adsorption mechanism is also explained. The BET and Langmuir results indicate that the adsorption isotherms associated with the various MIL-101(Cr)-SiO2 ratios demonstrated Type I and IV adsorption behavior, due to the mesoporous structure of the MIL-101(Cr)-SiO2. It was observed that the increase in the amount of Lewis and Brønsted sites on the MIL-101(Cr)-SiO2 composites significantly improves the water vapor adsorption efficiency, for greater stability during the water vapor adsorption experiments. View Full-Text
Keywords: microwave-assisted hydrothermal technique; sol-gel method; metal organic framework composites; adsorbent microwave-assisted hydrothermal technique; sol-gel method; metal organic framework composites; adsorbent
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MDPI and ACS Style

Uma, K.; Pan, G.-T.; Yang, T.-K. The Preparation of Porous Sol-Gel Silica with Metal Organic Framework MIL-101(Cr) by Microwave-Assisted Hydrothermal Method for Adsorption Chillers. Materials 2017, 10, 610.

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