Article
Chemistry, Inorganic & Nuclear
Fernando Jose Soares Barros, Yue Liu, Clarissa Dantas Paula, Francisco Murilo Tavares de Luna, Enrique Rodriguez-Castellon, Rodrigo Silveira Vieira
Summary: This study assessed the impact of rehydration on the catalytic properties of Mg/Al layered double hydroxides (LDH) for glycerol oligomerization. A LDH modification strategy was developed with the addition of acetic acid, which improved the selectivity to diglycerol. Recycling of the modified LDH showed better performance compared to the non acid treated material. Loss of metallic species by leaching to the reaction products was not observed, an advantage over previous works.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Physical
Namgi Jeon, Jungmok Oh, Akhil Tayal, Beomgyun Jeong, Okkyun Seo, Sujin Kim, Iljun Chung, Yongju Yun
Summary: Co-based catalysts on Al2O3 support with different compositional distribution of Co species were prepared by heat-treating the precursor under O2, Ar, and H2 atmospheres. The H2-treated catalyst showed superior PDH performance due to higher Co surface concentration and higher ratio of tetrahedral Co2+ in Co-Al2O4. Both tetrahedral Co2+ and metallic Co were found to be active for PDH, with the former showing higher selectivity.
JOURNAL OF CATALYSIS
(2021)
Article
Energy & Fuels
Mujahed Al-Dhaifallah, Mohammad Ali Abdelkareem, Hegazy Rezk, Hesham Alhumade, Ahmed M. Nassef, Abdul Ghani Olabi
Summary: The study showed that there is an optimal ratio between TiN and Co to maximize the ORR activity. CoTiN (30)/Gr exhibited an onset potential of 0.926 V vs Ag/AgCl, much higher than commercial Pt/C catalyst. The prepared catalyst has no activity towards methanol oxidation, making it a promising cathode catalyst for direct alcoholic FCs.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2021)
Review
Energy & Fuels
Nurul Nabila Rosman, Rozan Mohamad Yunus, Nur Rabiatul Adawiyah Mohd Shah, Rosmahani Mohd Shah, Khuzaimah Arifin, Lorna Jeffery Minggu, Norasikin Ahmad Ludin
Summary: Hydrogen generation through photoelectrochemical water splitting is a promising method for addressing energy crises and environmental problems. The introduction of co-catalysts can enhance photocatalytic H-2 generation and overcome issues such as charge carrier recombination and low visible light utilization in metal oxides.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Bohang Zhao, Mengyao Sun, Fanpeng Chen, Weichao Wang, Siyu Lu, Bin Zhang
Summary: The study introduces a low-cost Co-supported MnO catalyst for photothermo catalytic CO2 hydrogenation, exhibiting higher activity and selectivity compared to traditional thermal conditions. By enhancing the metal-oxide interaction, the reaction pathway is altered, leading to improved catalytic performance for CO2 hydrogenation.
Article
Materials Science, Ceramics
Hala M. Abo-Dief, Omima K. Hussein, Ayesha Ihsan, Salah M. El-Bahy, Asmaa M. Raslan, Muhammad Shahid, Muhammad Farooq Warsi
Summary: Ternary metal oxides and their nanocomposites with carbon nanotubes were prepared for photocatalytic dye degradation, showing enhanced degradation efficiency. Nanocomposite exhibited higher degradation rate of methylene blue compared to bare mixed metal oxides, indicating improved photocatalytic properties.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Guo-Xu Zheng, Xin-Biao Yu, Yu-Feng Deng, Zhuo Yuan, Xin-Zhe Huang, Ming-Xin Song
Summary: Rambutan-like ZnCo2O4 microsphere was successfully synthesized on foam nickel through a facile low-temperature hydrothermal method. The unique structure consists of self-assembled nanorods, resulting in a porous hierarchical structure with microspheres at the center and outward-growing spiny nanorods. The specific capacity of ZnCo2O4/NF remains at 877.91 mAh g-1 after 400 cycles at a current density of 0.2 A g-1, and 723.33 mAh g-1 at a current density of 1 A g-1 in the rating performance. Its excellent cycling and rating performance is attributed to its unique hierarchical mesoporous structure and high carrier transport efficiency. Additionally, the hierarchical structure improves the pseudo-capacitance effect at the electrode interface, enhancing the additional reversible capacity and charge/discharge capability.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Carmen Ciotonea, Alexandru Chirieac, Brandusa Dragoi, Jeremy Dhainaut, Maya Marinova, Stephane Pronier, Sandrine Arii-Clacens, Jean-Philippe Dacquin, Emil Dumitriu, Adrian Ungureanu, Sebastien Royer
Summary: The preparation of bimetallic materials based on transition metals has attracted interest for their use as catalysts in hydrogenation reactions. The study successfully synthesized Cu and Co based bimetallic materials with high dispersion of active sites and thermal stability. CuCo1:4 exhibited the highest conversion and selectivity towards cinnamyl alcohol in the hydrogenation reaction.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Analytical
Yaling Gao, Tongrui Zhang, Yuezhen Mao, Jingyu Wang, Chunwen Sun
Summary: In this study, CoFeRu-LDH catalyst with bifunctional properties was successfully synthesized by hydrothermal method and partial oxidation, resulting in oxides/LDH. The catalyst exhibited excellent bifunctional activity in zinc-air batteries, with a high voltage difference and good cycle stability, demonstrating its potential practical application.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Physical
Yang Zhang, Manning Zhao, Qian Yang, Mingyang Lai, Junyuan Zhang, Changyu Liu, Xiaolong Xu, Jianbo Jia
Summary: In this study, a self-limiting method using agarose gel was proposed to prepare bimetallic (iron and cobalt) nitrogen-doped carbon composites (FeCo-NC) as efficient electrocatalysts. The optimized FeCo-NC catalyst exhibited a small potential difference between the oxygen reduction reaction (ORR) half-wave potential and the oxygen evolution reaction (OER) potential, and demonstrated excellent performance in Zn-air batteries. This research provides an effective means of designing electrocatalysts and energy conversion systems.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Engineering, Multidisciplinary
Behnam Seyyedi, Bafrin Shakhseh
Summary: This study introduces a Cobalt-rGO composite with excellent activity for converting oxygen to hydrogen peroxide and producing electrochemical energy. The composite exhibits good catalytic performance, economical synthesis method, high specific surface area, high selectivity, and electrochemical durability.
ALEXANDRIA ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Luca Spiridigliozzi, Gianfranco Dell'Agli, Emanuela Callone, Sandra Dire, Renzo Campostrini, Paolo Bettotti, Mauro Bortolotti, Giorgio Speranza, Vincenzo M. Sglavo, Mattia Biesuz
Summary: This work investigates the effect of lithium doping on the structural and thermal behavior of a high entropy oxide. The results show that the presence of lithium prevents the reduction of Co3+ ions in the high entropy oxide and suggests the existence of Co3+ within the rock salt lattice. At high temperature, the high entropy oxide loses oxygen and changes the charge compensation mechanism for lithium incorporation. Additionally, the study finds that lithium exists in two distinct chemical environments in the high entropy oxide, indicating the presence of short-range order and possible M3+-Li+ pairs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Juhua Luo, Xiaopeng Li, Wenxing Yan, Pengcheng Shu, Jie Mei
Summary: A series of reduced graphene oxide (RGO) supported symmetrical lotus-like cobalt/manganese oxide/porous carbon (Co/MnO/PC/RGO) composites were synthesized, which exhibited excellent electromagnetic wave absorbing capacity with wide effective absorption bandwidth (EAB).
Article
Materials Science, Multidisciplinary
Toyokazu Tanabe, Kazuma Aso, Shugoro Tsutsumi, Seiya Shimono, Saburo Hosokawa
Summary: In this study, Pd-loaded perovskite composite manganese oxide catalysts were prepared and characterized to investigate the metal-support interaction on the morphology and electronic structure of PdO. The results showed that the CO oxidation activity of the catalysts followed the trend of PdO valence band shift, with Pd/LaMnO3 having the highest activity. The correlation observed can be understood in terms of the CO adsorption strength.
MATERIALS TRANSACTIONS
(2023)
Article
Energy & Fuels
Ha Huu Do, Mahider Asmare Tekalgne, Vy Anh Tran, Quyet Van Le, Jin Hyuk Cho, Sang Hyun Ahn, Soo Young Kim
Summary: This study demonstrates that a hollow-structured Co/Co3O4/C composite can serve as an efficient catalyst for hydrogen production, exhibiting low overpotential and moderate Tafel slope. The composite also shows remarkable durability due to the synergy of Co, Co3O4, and the hollow morphological architecture.
Review
Chemistry, Physical
Zahra Gholami, Guohua Luo, Fatemeh Gholami, Fan Yang
Summary: This review paper examines the importance of controlling NOx emissions and discusses various NOx control technologies and challenges for SCR process. It also explores the efficiency of different catalysts for NOx reduction by CO in the presence of oxygen, water steam, and sulfur dioxide. Additionally, it reviews possible reaction mechanisms for CO-SCR process.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2021)
Review
Chemistry, Physical
Zahra Gholami, Zdenek Tisler, Vlastimil Rubas
Summary: The Fischer-Tropsch (FT) process is a promising method for producing liquid fuels and valuable chemicals through CO hydrogenation. Catalyst activity and product selectivity are influenced by parameters such as support and promoters, which affect metal-support interaction, crystallite size, and more. This paper reviews the history of the FT process, the impact of different supports and promoters on cobalt-based catalyst performance, and the importance of proper reactor design for handling the heat of the exothermic reaction.
CATALYSIS REVIEWS-SCIENCE AND ENGINEERING
(2021)
Article
Engineering, Chemical
Ahmad Zuhairi Abdullah, Natasha Ghazali, Peng Yong Hoo, Nor Irwin Basir
Summary: In this study, zirconia was incorporated into mesoporous MCM-41 support for the selective esterification of glycerol with fatty acid. The catalysts showed correlations between their characteristics and activity under different reaction conditions, with the precipitation method demonstrating more internal incorporation of the acidic component.
CHEMICAL ENGINEERING COMMUNICATIONS
(2022)
Review
Energy & Fuels
Zahra Gholami, Fatemeh Gholami, Zdenek Tisler, Martin Tomas, Mohammadtaghi Vakili
Summary: The FCC process is an alternative technology for olefin production with lower CO2 emission and higher energy efficiency. Various parameters such as operating conditions, feedstock properties, and catalyst type can significantly impact catalytic activity and product distribution.
Article
Engineering, Chemical
Martyna Murat, Zahra Gholami, Josef Simek, Daily Rodriguez-Padron, Jose Miguel Hidalgo-Herrador
Summary: This study focuses on the feasibility of using waste from the food or wood industry to produce biofuels under high-temperature conditions. It was found that the feedstock composition had little impact on the product composition, and the pyrolysis reaction could produce high-energy materials.
Article
Engineering, Environmental
Mohammadtaghi Vakili, Yixiang Bao, Fatemeh Gholami, Zahra Gholami, Shubo Deng, Wei Wang, Abhishek Kumar Awasthi, Mohd Rafatullah, Giovanni Cagnetta, Gang Yu
Summary: HFPO-DA and GenX are anthropogenic substances widely used in the industry, characterized by high chemical stability, high mobility, and high water solubility. Due to their persistence in the environment and adverse effects on human health, these chemicals are receiving increasing regulatory attention.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Zahra Gholami, Fatemeh Gholami, Zdenek Tisler, Mohammadtaghi Vakili
Summary: This paper discusses the importance of light olefins in the petrochemical and chemical industries, with steam cracking being the main production technology. The cracking process occurs in the cracking furnace, with various operating parameters affecting product yield.
Article
Chemistry, Physical
Zahra Gholami, Fatemeh Gholami, Zdenek Tisler, Jan Hubacek, Martin Tomas, Miroslav Baciak, Mohammadtaghi Vakili
Summary: This review describes the production of light olefins through the FTO process using both unsupported and supported iron-based catalysts. It discusses the catalytic properties and performances of different catalysts, as well as the effect of support and physico-chemical properties on catalyst activity. The selection of suitable catalysts and optimal process conditions can enhance the FTO reaction for light olefins production.
Article
Chemistry, Applied
Jan Hubacek, Jaromir Lederer, Pavel Kuran, Petr Koutnik, Zahra Gholami, Michal Zbuzek, Miroslav Baciak
Summary: This study explores the possibility of chlorine removal from a model plastic mixture and compares different pyrolysis conditions and sorbents. The results show that using sorbents in situ is not suitable, but combining stepwise pyrolysis and sorbents ex-situ can reach the limit of 10 ppm for refinery introduction. Fe(3)O4 displays the highest efficiency.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Chemistry, Physical
Zahra Gholami, Zdenek Tisler, Eliska Svobodova, Ivana Hradecka, Nikita Sharkov, Fatemeh Gholami
Summary: The determination of the catalyst's active phase plays a crucial role in improving the catalytic performance of Fischer-Tropsch synthesis. This study investigates the effect of different carbidation temperatures on the catalytic performance of cobalt carbide catalysts. The results indicate that higher carbidation temperatures result in the decomposition of cobalt carbide into metallic cobalt, leading to enhanced catalyst activity and selectivity.
Article
Engineering, Chemical
Zdenek Tisler, Pavla Vondrova, Katerina Peroutkova, Josef Simek, Lenka Skuhrovcova, Katerina Strejcova, Eliska Svobodova, Zahra Gholami
Summary: The aldol condensation of furfural and acetone is a promising method for liquid fuel production. This research focuses on the effect of water on the conversion and product distribution, and found that the addition of water can increase selectivity to the target product but shorten catalyst lifetime.
Article
Engineering, Chemical
Nikita Sharkov, Zahra Gholami, Ivana Hradecka, Zdenek Tisler, Josef Simek
Summary: This study compared the catalytic activity and product selectivity of cobalt and iron catalysts supported on SBA-15, with and without a carbide phase and reduction treatment before the reaction. The presence of carbide phase and reduction treatment were found to significantly influence the catalytic behavior and product selectivity. The findings provide new insights into the role of carbide in the performance of cobalt and iron catalysts in Fischer-Tropsch synthesis.
Article
Green & Sustainable Science & Technology
Wei Wang, Minjuan Gong, Donghai Zhu, Mohammadtaghi Vakili, Zahra Gholami, Huanhuan Jiang, Shuangxi Zhou, Han Qu
Summary: Covalent organic frameworks (COFs) have been developed as efficient materials for the remediation of mercury ion pollution. Modified COFs showed excellent adsorption abilities for Hg(II) and selective absorbability for cationic metals in water. The study also revealed a synergistic adsorption mechanism between mercury ions and organic pollutants.
ENVIRONMENTAL SCIENCE AND ECOTECHNOLOGY
(2023)
Article
Engineering, Chemical
Zahra Gholami, Zdenek Tisler, Josef Simek
Summary: Fischer-Tropsch synthesis is a widely recognized process for converting syngas into higher hydrocarbons and oxygenates. The use of a multilayered catalytic bed has shown positive effects in addressing temperature control and heat dissipation, as well as underutilization of the catalyst bed in fixed-bed reactors.
CHEMICAL ENGINEERING RESEARCH & DESIGN
(2023)
Article
Engineering, Environmental
Mohammadtaghi Vakili, Fatemeh Gholami, Haider M. Zwain, Wei Wang, Amin Mojiri, Martin Tomas, Giovanni Cagnetta, Reza Gholizadeh, Wafa Dastyar, Zahra Gholami
Summary: This study achieved effective adsorption of GenX by using chitosan (CS) modified adsorbent. The prepared CS-DEO-APTES adsorbent showed high adsorption capacity and excellent stability. Kinetic and isothermal data revealed chemisorptive interactions between GenX and CS-DEO-APTES with a uniform distribution of adsorption sites. GenX-saturated beads were successfully regenerated multiple times. Density functional theory calculations indicated that electrostatic interactions primarily influenced the adsorption of GenX. These results highlight the effectiveness of the CS-DEO-APTES adsorbent for removing GenX from aqueous solutions.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Xu Yang, Jieshi Xiao, Jian Huang, Kaixiang Peng
Summary: This study introduces an online convolutional adversarial autoencoder (AAE) model to learn representative industrial process information. By extracting features that reflect diverse information and follow a Gaussian distribution, the model improves the accuracy of fault detection and removes redundant information through a feature selection strategy.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
Article
Engineering, Chemical
Shao-Yang Wu, Meng-Tsun Lai, Chung-Hui Hsu, Kevin C. W. Wu, Yesong Gu
Summary: This study investigated the effectiveness of using Fe-based MOF or MIL-100(Fe) in conjunction with a PEDOT-modified Pt electrode for detecting the synthetic azo dye tartrazine. By modifying the electrode with two different methods, favorable lower reductive potentials, competitive sensitivities, and good repeatability and stability were achieved in all MIL-100(Fe)/PEDOT/Pt electrodes.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2024)
