1
|
Ruhaimi A, Aziz M, Jalil A. Magnesium oxide-based adsorbents for carbon dioxide capture: Current progress and future opportunities. J CO2 UTIL 2021. [DOI: 10.1016/j.jcou.2020.101357] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
|
2
|
MgO insertion endowed strong basicity in mesoporous alumina framework and improved CO2 sorption capacity. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.101294] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
3
|
Hossein-Babaei F, Zare AH, Gharesi M. Quantitative Assessment of Vapor Molecule Adsorption to Solid Surfaces by Flow Rate Monitoring in Microfluidic Channels. Anal Chem 2019; 91:12827-12834. [PMID: 31538476 DOI: 10.1021/acs.analchem.9b02543] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Measuring parameters related to gas adsorption on the effective surfaces of solid samples is important in catalyst studies. Further attention on the subject has appeared due to the materials and methods required to concentrate the gaseous biomarkers for detection. The conventional methods are mainly based on the volumetric and gravimetric analyses, which are applicable to bulk samples. No standard method has yet been provided for such measurements on thin films, which are the most commonly used samples for material screening. Here, a novel method is presented for the adsorption coefficient measurement on thin-film samples. This method comprises coating of the inner walls of a microfluidic channel with the thin film under test. The recorded diffusion rates for a trace gas along this microchannel are compared with the solutions of the adsorption-diffusion equation of the channel for determining the adsorption coefficient of the gas molecule to the inner walls of the channel. The high ratio of surface-to-volume in such channels magnifies the gas sorption effects and improves accuracy. The method is fast, versatile, and cost-effective, allowing measurements at different temperatures and atmospheric pressures. The adsorption coefficients of different isomers of butanol on poly(methyl methacrylate) sheets, zinc oxide thick films, and gold thin films are determined as examples.
Collapse
Affiliation(s)
- Faramarz Hossein-Babaei
- Electronic Materials Laboratory, Electrical Engineering Department , K. N. Toosi University of Technology , Tehran , 16317-14191 , Iran
| | - Ali Hooshyar Zare
- Electronic Materials Laboratory, Electrical Engineering Department , K. N. Toosi University of Technology , Tehran , 16317-14191 , Iran
| | - Mohsen Gharesi
- Electronic Materials Laboratory, Electrical Engineering Department , K. N. Toosi University of Technology , Tehran , 16317-14191 , Iran
| |
Collapse
|
4
|
Hiremath V, Kwon HJ, Jung IS, Kwon S, Kwon SH, Lee SG, Lee HC, Seo JG. Mg-Ion Inversion in MgO@MgO-Al 2 O 3 Oxides: The Origin of Basic Sites. CHEMSUSCHEM 2019; 12:2810-2818. [PMID: 30964229 DOI: 10.1002/cssc.201900072] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 03/19/2019] [Indexed: 06/09/2023]
Abstract
Although MgO-Al2 O3 is well known as having a spinel structure, the inversion of which occurs by exchange of the trivalent (Al3+ ) and divalent (Mg2+ ) cations, little analytical study of the degree of inversion has been carried out. This study concerns a simple methodology to identify the inversion by solid-state NMR spectroscopy, whereby its correlation with the CO2 capture capacity of MgO-rich MgO@MgO-Al2 O3 spinel structures is verified. Through 27 Al and 25 Mg NMR spectroscopy, temperature-programmed CO2 desorption, and thermogravimetric analysis, higher inversion is found to occur at low Mg/Al ratios and the inversion is found to decrease as the Mg/Al ratio increases. Moreover, the degree of inversion correlates with CO2 sorption, which is associated with the medium-strength basic sites induced by formation of the unsaturated O2- species. These results will open new pathways to exploit defects in complex oxides beyond spinels and their derivatives for desired applications. This demonstration of MgO-Al2 O3 for CO2 sorption can contribute to the design of future CO2 sorbents.
Collapse
Affiliation(s)
- Vishwanath Hiremath
- Department of Energy Science and Technology, Myongji University, Yongin, 17058, Korea
| | - Hyuk Jae Kwon
- Samsung Electronics Co., Ltd, Samsung Advanced Institute of Technology, 130 Samsung-ro, Yeongtong-gu, Suwon, Gyeonggi-do, 16678, Korea
| | - In-Sun Jung
- Samsung Electronics Co., Ltd, Samsung Advanced Institute of Technology, 130 Samsung-ro, Yeongtong-gu, Suwon, Gyeonggi-do, 16678, Korea
| | - Soonchul Kwon
- School of Urban Architecture and Civil Engineering, Pusan National University Busadaehak-ro 63beon-gil, Geumjeong-gu, Busan, 46241, Korea
| | - Sung Hyun Kwon
- Department of Organic Material Science and Engineering, Pusan National University, Pusan, 46241, Korea
| | - Seung Geol Lee
- Department of Organic Material Science and Engineering, Pusan National University, Pusan, 46241, Korea
| | - Hyun Chul Lee
- Samsung Electronics Co., Ltd, Samsung Advanced Institute of Technology, 130 Samsung-ro, Yeongtong-gu, Suwon, Gyeonggi-do, 16678, Korea
| | - Jeong Gil Seo
- Department of Energy Science and Technology, Myongji University, Yongin, 17058, Korea
| |
Collapse
|
5
|
Yang ZZ, Wei JJ, Zeng GM, Zhang HQ, Tan XF, Ma C, Li XC, Li ZH, Zhang C. A review on strategies to LDH-based materials to improve adsorption capacity and photoreduction efficiency for CO2. Coord Chem Rev 2019. [DOI: 10.1016/j.ccr.2019.01.018] [Citation(s) in RCA: 121] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
6
|
Bhatta LKG, Bhatta UM, Venkatesh K. Metal Oxides for Carbon Dioxide Capture. SUSTAINABLE AGRICULTURE REVIEWS 2019. [DOI: 10.1007/978-3-030-29337-6_3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
|