Article
Engineering, Chemical
Fahmi Anwar, K. Suresh Kumar Reddy, Anish Mathai Varghese, Maryam Khaleel, Kean Wang, Georgios N. Karanikolos
Summary: Paraffin-selective adsorbents for ethane/ethylene separation were developed using surface-functionalized mesoporous silica adsorbents. The adsorbents exhibited reverse selectivity, becoming paraffin-selective due to enhanced van der Waal's interactions between the grafted ionic liquids and ethane. Various silica-based adsorbents functionalized with different loadings, anion, and cation types were synthesized and characterized. The adsorbents showed stable performance in pressure swing adsorption and breakthrough cyclic testing, with a breakthrough ethylene productivity of up to 1.2 mmol/g and a breakthrough selectivity of 2.4.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Inorganic & Nuclear
Hong-Xin Li, Han Fang, Yu-Feng Zhang, Zong-Hui Zhang, Dong-Xu Xue
Summary: The industrial demand for ethylene is increasing and the efficient purification of ethylene from ethane is challenging. Pillar-layered metal-organic frameworks (MOFs) have shown potential in gas separation, storage, and catalysis. In this study, five pillar-layered rare-earth (RE)-MOFs were successfully synthesized using different metal sources and bridge linkers. These MOFs demonstrated microporous characteristics and exhibited selective adsorption for different gases. Among them, Tb-NTB-1,4-NDC showed the best separation potential.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Hyein Park, Minjung Kang, Dong Won Kang, Chang Seop Hong
Summary: This study reports the synthesis of seven robust hypercrosslinked polymers for the separation of ethane and ethylene. One of the polymers exhibited the highest ethane capture capacity, and scalable and stable adsorbents were designed by tuning the nonpolar pore environment.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Multidisciplinary
Shuaiqiang Jia, Qinggong Zhu, Shitao Han, Jianxin Zhai, Mengke Dong, Wei Xia, Xueqing Xing, Haihong Wu, Mingyuan He, Buxing Han
Summary: In this study, a fast, efficient, and simple electrodeposition strategy was developed to synthesize 3D porous Cu/Zn heterostructures. These heterostructures demonstrated excellent electrocatalytic performance for the reduction of carbon dioxide, achieving high CO faradaic efficiency and current density.
Article
Chemistry, Multidisciplinary
Shuaiqiang Jia, Qinggong Zhu, Shitao Han, Jianxin Zhai, Mengke Dong, Wei Xia, Xueqing Xing, Haihong Wu, Mingyuan He, Buxing Han
Summary: This study presents a fast, efficient, and simple electrodeposition strategy for synthesizing three-dimensional porous Cu/Zn heterostructures for electro-catalytic carbon dioxide reduction applications. The obtained electrodes demonstrate high CO faradaic efficiency and partial current density under specific conditions, attributed to the formation of 3D porous Cu/Zn heterostructures and rapid mass/ion diffusion.
Article
Environmental Sciences
Claude F. G. Mbafou, Brice Takam, Franck W. Boyom-Tatchemo, Jean-Baptiste Tarkwa, Elie Acayanka, Georges Y. Kamgang, Eric M. Gaigneaux, Samuel Laminsi
Summary: This study proposes a greener approach to enhance the adsorption capacity of clays for wastewater pollutants. By mixing clay with eggshell and calcining, the internal specific surface area and retention capacity of the clays are increased, resulting in improved removal efficiency of dyes from polluted water.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Jaquebet Vargas-Bustamante, Roberto Salcedo, Jorge Balmaseda
Summary: This study fills the knowledge gap regarding the adsorptive separation of ethane and ethylene using ZIF-8 molecular sieve. The research findings show that ZIF-8 has minimal interactions with ethylene, while it exhibits selectivity towards ethane. These findings provide a platform for designing new systems for the adsorptive separation of ethane and ethylene, thereby reducing the environmental impact of ethylene production.
Article
Multidisciplinary Sciences
Kongzhao Su, Wenjing Wang, Shunfu Du, Chunqing Ji, Daqiang Yuan
Summary: The study presents a porous organic cage based on truncated octahedral calix[4]resorcinarene that can efficiently separate high-purity ethylene from ethane/ethylene mixtures.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Inorganic & Nuclear
Jing-Jing Pang, Zhi-Han Ma, Qiang-Qiang Yang, Kuo Zhang, Xin Lian, Hongliang Huang, Zhao-Quan Yao, Baiyan Li, Jian Xu, Xian-He Bu
Summary: In this study, a highly efficient method for separating ethylene and ethane through one-step adsorption process was reported. The researchers designed a Tb-MOF material with high selectivity, which can effectively trap ethane while retaining ethylene. Experimental results demonstrate that this material exhibits high selectivity and adsorption ratio at 298K and 1 bar.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Jing-Jing Pang, Zhi-Han Ma, Qiang-Qiang Yang, Kuo Zhang, Xin Lian, Hongliang Huang, Zhao-Quan Yao, Baiyan Li, Jian Xu, Xian-He Bu
Summary: In this study, a highly efficient adsorption process for separating ethylene from ethane was achieved using a Tb-MOF material. The assembled MOF exhibits high selectivity and adsorption capacity, making it a promising candidate for industrial applications.
INORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Physical
Angela Andrea Maggio, Maria Eugenia Roca Jalil, Jhonny Villarroel-Rocha, Karim Sapag, Miria Teresita Baschini
Summary: This study used pillared clays to remove ciprofloxacin from aqueous media and investigated the influence of different drying methods on the properties of the materials. The results showed that pillared clays have good adsorption performance and exhibit differences under different pH values and drying methods.
APPLIED CLAY SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Vadim A. Dubskikh, Konstantin A. Kovalenko, Anton S. Nizovtsev, Anna A. Lysova, Denis G. Samsonenko, Danil N. Dybtsev, Vladimir P. Fedin
Summary: A porous metal-organic framework based on thieno [3,2-b]thiophenedicarboxylate was synthesized and characterized. The framework showed a high selectivity for CO2 adsorption and a potential application in the separation and sequestration of CO2 from biogas and flue gas.
Article
Chemistry, Applied
Kyounghee Chung, Dooyong Park, Kyung-Min Kim, Chang-Ha Lee
Summary: This study establishes the design basis for the cyclic adsorption process of ethylene purification by measuring the adsorption equilibria and kinetics of ethane and ethylene on zeolite 13X pellets. The strong cation-pi interaction between ethylene and Na+ in zeolite 13X leads to higher adsorption capacity and affinity for ethylene. Additionally, macropore diffusional resistance also contributes to the adsorption kinetics.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Physical
Ying Yu, Lifeng Yang, Bin Tan, Jianbo Hu, Qingju Wang, Xili Cui, Huabin Xing
Summary: This study successfully achieved the challenging separation of C5 olefins using two novel adsorbents, demonstrating unprecedented separation and recycling performance. The experimental results validated the excellent separation performance of these two adsorbents for C5 olefins, while regeneration tests showed easy desorption.
Article
Chemistry, Physical
Hmoud Al Dmour, Fethi Kooli, Ahmed Mohmoud, Yan Liu, Saheed A. Popoola
Summary: The study successfully removed dye molecules using two doped porous clay heterostructures, with Zr-PCH showing higher efficiency and better regeneration performance compared to Al-PCH, which exhibited lower removal efficiency and significant reduction in efficiency after regeneration.
Review
Chemistry, Medicinal
Rosana Pinto, Silvia Carvalho, Fernando Antunes, Joao Pires, Moises L. Pinto
Summary: This review discusses the importance of nitric oxide and hydrogen sulfide in wound healing applications, as well as the challenges in designing effective delivery systems. It introduces different types of new releasing carriers to facilitate the application of these molecules in clinical practice.
Article
Chemistry, Physical
Mary Batista, Moises L. Pinto, Renato Carvalho, Joao Pires
Summary: The research demonstrated that glycerin-activated carbons prepared via chemical activation exhibit high selectivity in adsorption-separation of ethane and ethylene, showing a higher adsorption capacity for ethane. This serves as a successful example of utilizing glycerin, a low-cost by-product, to produce promising adsorbents for gas separation.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Physical
Abeer Al Mohtar, Moises L. Pinto
Summary: This study investigates the effect of moisture on the CO2 capture mechanism using an amine-functionalized silica support through density functional theory. The presence of water reduces the activation energy of the capture reaction and promotes product stability.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Nanoscience & Nanotechnology
Rosana V. Pinto, Silvia Carvalho, Fernando Antunes, Joao Pires, Moises L. Pinto
Summary: A polymeric film with a nanoporous carrier was developed to deliver nitric oxide (NO) or hydrogen sulfide (H2S) for wound healing. The film achieved sustained gas release in biological media due to the polymer barrier. Gas-loaded films showed different biological actions, with NO being non-toxic and H2S approaching toxic levels at lower concentrations. The films also demonstrated potential antibacterial efficacy against E. coli.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Maria Ines Severino, Abeer Al Mohtar, Carla Vieira Soares, Catia Freitas, Nicolas Sadovnik, Shyamapada Nandi, Georges Mouchaham, Vanessa Pimenta, Farid Nouar, Marco Daturi, Guillaume Maurin, Moises L. Pinto, Christian Serre
Summary: Metal-Organic Frameworks (MOFs) with open metal sites (OMS) can strongly interact with polar gases/vapors. However, their selective adsorption is usually hindered by a high affinity to water under ambient conditions. This study challenges the paradigm by demonstrating that metal(III) polycarboxylates MOFs, such as MIL-100(Fe), with a high concentration of OMS, enable the selective capture of polar VOCs even in the presence of water. The adsorption mechanism involves a direct coordination of the VOC on the OMS, which has a stronger interaction energy compared to water.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Silvia Carvalho, Rosana V. Pinto, Joao Pires, Joao Rocha, Fernando Antunes, Moises L. Pinto
Summary: Four PEG composites were synthesized and characterized for their adsorption and release performance of hydrogen sulfide (H2S) and nitric oxide (NO). Cytotoxicity studies showed that the PEG composites had no toxicity to human cells.
MICROPOROUS AND MESOPOROUS MATERIALS
(2023)
Article
Chemistry, Physical
Maria Ines Severino, Abeer Al Mohtar, Carla Vieira Soares, Oleksii Kolmykov, Catia Freitas, Iurii Dovgaliuk, Charlotte Martineau, Vanessa Pimenta, Farid Nouar, Guillaume Maurin, Moises L. Pinto, Christian Serre
Summary: Effective capture of polar volatile organic compounds under environmental conditions is a challenge that can be overcome by introducing perfluorinated groups into a flexible microporous MOF. The perfluorinated flexible MIL-53(Al) with one CF3 group exhibits outstanding affinity for acetic acid even in the presence of water, making it an optimum sorbent for indoor air quality management under real working conditions.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Review
Multidisciplinary Sciences
Marta Bordonhos, Tiago L. P. Galvao, Jose R. B. Gomes, Jose D. Gouveia, Miguel Jorge, Mirtha A. O. Lourenco, Jose M. Pereira, German Perez-Sanchez, Moises L. Pinto, Carlos M. Silva, Joao Tedim, Bruno Zezere
Summary: This article presents an overview of a collaborative research effort on computational approaches to understand materials and tools at different length and time scales. It introduces various techniques and models used in the study, as well as recent computational case studies focusing on material synthesis, interpretation of experimental results, prediction of material properties, and material selection for specific applications.
ADVANCED THEORY AND SIMULATIONS
(2023)
Article
Chemistry, Multidisciplinary
Beatriz Matos, Mary Batista, Joao Pires
Summary: In the face of global warming and the energy crisis, it is crucial to reduce the emissions of greenhouse gases like CO2 and CH4 and recycle biomethane from landfill biogas. This study demonstrates the potential of converting glycerol, a by-product of biodiesel production, into activated carbon using potassium acetate as an activating agent. The activated carbon exhibits high adsorption capacities for CO2 and CH4, with selectivity values that enable effective separation. Additionally, the study finds that the CO2 emissions produced during activated carbon synthesis can be easily neutralized through their use in small biogas production units.
ENVIRONMENTAL CHEMISTRY LETTERS
(2023)
Article
Biochemistry & Molecular Biology
Mary Batista, Renato Carvalho, Moises L. Pinto, Joao Pires
Summary: Glycerin and dopamine were used as precursors to prepare microporous activated carbon adsorbent materials for the separation of ethane/ethylene and natural gas or landfill gas components. The activated carbons were produced through carbonization and chemical activation, with the introduction of nitrogenated groups to improve selectivity. Methane had the lowest adsorption capacity on the most effective material, followed by carbon dioxide, ethylene, and ethane.
Article
Chemistry, Physical
Silvia Carvalho, Joao Pires, Cristina Moiteiro, Moises L. Pinto
Summary: A new imine-linked polymer organic framework with microporosity and temperature stability has been synthesized using inexpensive reagents. The material has a higher capacity to adsorb NO compared to H2S. This study explores the potential use of the framework in the therapeutic release of NO or H2S.
Article
Energy & Fuels
Agata Mlonka-Medrala, Tarikul Hasan, Wojciech Kalawa, Marcin Sowa, Karol Sztekler, Moises Luzia Pinto, Lukasz Mika
Summary: Adsorption chillers use heat instead of electricity to produce cold energy, reducing electrical energy consumption. In this study, different types of zeolites were synthesized from fly ash and tested as adsorbents in adsorption chillers. Results indicate that only 13X zeolite has the potential for application in sorption chillers.
