Article
Chemistry, Physical
Paola Riani, Ioannis Valsamakis, Tullio Cavattoni, Vicente Sanchez Escribano, Guido Busca, Gabriella Garbarino
Summary: Ni-based catalysts with enhanced thermal stability and catalytic performance for CO2 methanation have been synthesized, and it was found that La2O3 plays a promoting role in the reaction.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Li Liu, Fei Wang, Xiang Chu, Lingling Zhang, Shuaishuai Zhang, Xiao Wang, Guangbo Che, Shuyan Song, Hongjie Zhang
Summary: Renewable electricity-powered electrochemical CO2 reduction is a promising method to convert exhaust CO2 into valuable chemicals and fuels. In this work, a CeNCl-CeO2 heterojunction-modified Ni catalyst was synthesized and showed high CO2RR catalytic performance. The catalyst exhibited excellent CO selectivity and stability.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Carole Le Berre, Andrea Falqui, Alberto Casu, Tekalign T. Debela, Mathias Barreau, Christopher H. Hendon, Philippe Serp
Summary: In the context of CO2 valorization, Ni catalysts can shift their selectivity from CO2 methanation to reverse water gas shift reaction by adding sulfur, improving the efficiency and stability of the catalysts.
CATALYSIS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Song Lu, Yang Zhang, Mohamed F. Mady, Obinna Egwu Eleri, Wakshum Mekonnen Tucho, Michal Mazur, Ang Li, Fengliu Lou, Minfen Gu, Zhixin Yu
Summary: In this research, a sulfur-doped Ni-N-C catalyst was successfully synthesized through a facile ion-adsorption and pyrolysis treatment. This catalyst showed higher activity and selectivity in electrochemical CO2 reduction (ECR) to CO, along with excellent stability. The synergetic effect between sulfur and Ni-N-X moieties was identified as the key factor contributing to the high activity and selectivity.
Article
Chemistry, Physical
Man Ho Han, Dongjin Kim, Sangkuk Kim, Seung-Ho Yu, Da Hye Won, Byoung Koun Min, Keun Hwa Chae, Woong Hee Lee, Hyung-Suk Oh
Summary: This study demonstrates that nickel sulfide nanoparticles can mimic the electronic structure of nickel single atom catalysts and enhance catalytic activity in CO2 reduction reaction. However, the stability of nickel sulfide is low and needs further improvement.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Haesol Kim, Dongyup Shin, Woojin Yang, Da Hye Won, Hyung-Suk Oh, Min Wook Chung, Donghyuk Jeong, Sun Hee Kim, Keun Hwa Chae, Ji Yeon Ryu, Junseong Lee, Sung June Cho, Jiwon Seo, Hyungjun Kim, Chang Hyuck Choi
Summary: The study found that the broken ligand-field symmetry is key for active CO2 electrolysis, which leads to an increase in the Ni redox potential yielding Ni-I, and is directly related to the stability of the Ni center. This suggests a new direction for rational ligand-field engineering of single-atom Ni catalysts for efficient CO2 electrolysis.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Jiaming Wang, Guilong Liu, Huixian Zhong, Pengfei Song, Kang An, Ziyang Zhang, Ang Cao, Yuan Liu
Summary: In this study, bimetallic Co-Ni alloy@Co-Co2C catalyst with excellent ethanol selectivity for direct ethanol synthesis was successfully prepared by loading Co delta+-Co2C decorated-Co-Ni alloy nanoparticles on Mg-Al-O complex oxides. The catalyst showed a high ethanol selectivity and the mutual dilution between Co and Ni in the Co-Ni alloy NPs effectively inhibited the formation of heavy hydrocarbons, further improving the selectivity towards alcohols.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Yidan Sun, Fang Liu, Xuerong Wang, Kangkang Lu, Xiaojing Liu, Yan Huang, Fengjiao Yu, Yuhui Chen
Summary: In this work, Ni NPs were modified by encapsulating them into porous Ni-N-C nanosheets (Ni@Ni-N-C) to enhance the synergy between Ni NPs and dispersed Ni-N species in CO2RR. The CO faradaic efficiency (FECO) reached 96.4% at -0.9 V and remained above 90% in a wide potential window. Moreover, FECO values of over 94% were achieved from -50 to -170 mA cm(-2) with a peak FECO of 99% in a flow cell. This study demonstrates the practical design strategy of surface modification for CO2RR catalysts by inhibiting the unwanted HER and activating surface sites.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Chenxi Song, Linjie Gao, Mengqi Wu, Dachao Yuan, Xiaoxiao Kang, Ruqian Lian, Xingyuan San, Yaguang Li
Summary: In this study, theoretical calculations are used to predict and experimental verification shows that Ni single atom catalysts exhibit high selectivity and activity for CO2 hydrogenation. The synthesized Ni single atom catalyst supported on CeO2 nanosheets demonstrates 100% CO selectivity and high CO production rate. Furthermore, solar heating conversion device is utilized to achieve solar-driven CO2 hydrogenation with 100% CO selectivity.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Saade Abdalkareem Jasim, Maria Jade Catalan Opulencia, Azam Abdusalamovich Khalikov, Walid Kamal Abdelbasset, Erich Potrich, Tiejun Xu
Summary: In this study, the reduction of CO2 on Ni-C-80 and Co-Si-60 was investigated and compared with various metal catalysts. It was found that the metals on Ni-C-80 and Co-Si-60 have strong bonds with surrounding atoms. The adsorption and desorption energies on Ni-C-80 and Co-Si-60 were higher, and the over potentials were lower compared to other metal catalysts, suggesting that Ni-C-80 and Co-Si-60 can serve as efficient catalysts for the reduction of CO2.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Zhitao Zhang, Chenyang Shen, Kaihang Sun, Chang-Jun Liu
Summary: Ni/In2O3-ZrO2 catalyst supported on In2O3-ZrO2 solid solution was prepared and applied in CO2 hydrogenation to methanol. The catalytic performance of Ni/In2O3-ZrO2 showed higher methanol space-time yield compared to Ni/In2O3.
CATALYSIS COMMUNICATIONS
(2022)
Article
Biochemistry & Molecular Biology
Paulina Summa, Katarzyna Swirk, Dominik Wierzbicki, Monika Motak, Ivo Alxneit, Magnus Ronning, Patrick Da Costa
Summary: Promotion with V on Co-precipitated Ni-Mg-Al hydrotalcite-derived catalyst significantly alters textural properties and basicity, leading to improved dispersion of nickel and enhanced activity in CO2 methanation. An optimal loading of 2 wt% V shows the highest activity, correlating directly with specific surface area and basic properties of the catalysts.
Article
Chemistry, Physical
Patryk Blaszczak, Marcin Zajac, Agata Ducka, Krzysztof Matlak, Barbara Wolanin, Sea-Fue Wang, Anna Mandziak, Beata Bochentyn, Piotr Jasinski
Summary: In this study, a series of SOECs modified with a small amount of Co ions were used to investigate the synergy between transition metals for enhancing electrochemical and chemical activity. The addition of Co significantly increased the concentration of CH4 and improved the electrochemical efficiency of water and CO2 co-electrolysis. The characterization analysis revealed the mechanism of synergy between Ni and Co host metals and identified the causes of increased activity. Additionally, a novel discovery was made regarding the catalytic performance of NiCo2O4 spinel structure.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Adriana Blanco, Josefina Caroca, Rocio Tamayo, Marcos Flores, Manuel Romero-Saez, Rodrigo Espinoza-Gonzalez, Francisco Gracia
Summary: Nickel-doped CaTiO3 (Ni@CTO) perovskites prepared by sol-gel synthesis showed high catalytic activity and selectivity in the CO2 methanation reaction. The catalysts with particle sizes below 10 nm exhibited the highest activity. The doped catalysts exhibited activity at lower temperatures, possibly due to enhanced CO2 adsorption sites and higher specific surface area resulting from the formation of oxygen vacancies in the perovskite. The 10Ni@CTO catalyst demonstrated high stability over 40 hours of reaction.
Article
Chemistry, Physical
Zouhair Boukha, Alejandro Bermejo-Lopez, Benat Pereda-Ayo, Jose A. Gonzalez-Marcos, Juan R. Gonzalez-Velasco
Summary: The performance of nickel catalyst supported on lanthana-modified hydroxyapatite (HAP) in CO2 methanation was investigated, with La addition improving the dispersion and reducibility of Ni particles, increasing the amounts of basic sites and their thermal stability, leading to enhanced catalytic activity.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Alexander C. Brannan, Yunho Lee
INORGANIC CHEMISTRY
(2020)
Article
Thermodynamics
Vikas K. Bhosale, Junyeong Jeong, Jonghoon Choi, David G. Churchill, Yunho Lee, Sejin Kwon
COMBUSTION AND FLAME
(2020)
Article
Chemistry, Multidisciplinary
Sudakar Padmanaban, Yunho Lee, Sungho Yoon
Summary: In this study, a Ru-immobilized bisphosphine-based porous organic polymer (Ru@PP-POP) was used as an efficient heterogeneous catalyst for the chemoselective hydrogenation of cinnamaldehyde to cinnamyl alcohol with high chemoselectivity (98%) and excellent recyclability. The catalyst showed a high turnover number (970) and a high turnover frequency (240h^-1), representing the best activity obtained using a phosphine-based heterogeneous Ru-catalyst in this transformation.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Changho Yoo, Alexander J. M. Miller
Summary: A study reported the application of an iodide-free catalyst in the production of acetic acid through methanol carbonylation, achieving methylation without the use of iodide. Experimental results showed that the catalyst mediated methylation through C-H bond activation and acetate migration, ultimately producing methyl acetate and acetic acid.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Editorial Material
Chemistry, Multidisciplinary
Dipankar Sahoo, Diana A. Iovan
Summary: A recent study reported the isolation and characterization of an N-trifluoromethyl-substituted Fe(IV) bisimido species that undergoes intramolecular C-H activation. This discovery opens up new possibilities for N-group-transfer chemistry.
Article
Chemistry, Multidisciplinary
Yasmine S. Zubi, Bingqing Liu, Yifan Gu, Dipankar Sahoo, Jared C. Lewis
Summary: This study successfully created artificial metalloenzymes (ArMs) by incorporating Ru (II) polypyridyl complexes into a protein scaffold for controlling the properties of photocatalysts in visible light photocatalysis. By engineering modifications, the photophysical properties of ArMs were improved, resulting in higher efficiency compared to Ru(Bpy)(3)(2+) in certain organic transformations.
Article
Chemistry, Multidisciplinary
Kyung-Ryul Oh, Anil H. Valekar, Ga-Young Cha, Mijung Lee, Changho Yoo, Young Kyu Hwang
Summary: The catalytic hydrogenation of CO2 to formate is a sustainable and green process. By replacing fossil fuel-based H2 with biomass-derived H2 and using recyclable heterogeneous catalysts, sugars derived from biomass can be efficiently converted into formate under mild reaction conditions.
JOURNAL OF CO2 UTILIZATION
(2022)
Article
Chemistry, Physical
Kyung-Ryul Oh, Gwang-Nam Yun, Ki-Duk Kim, Yeon-Joo Cheong, Changho Yoo, Fajar Prihatno, Hye-Young Jang, Anil H. Valekar, Ga-Young Cha, Mijung Lee, Jaehoon Jung, Young-Uk Kwon, Young Kyu Hwang
Summary: In this study, efficient methods for preparing SACs were demonstrated by incorporating an Ir complex into a ZIF support. The results showed that the prepared catalysts had different immobilization efficiencies, particle shapes, and catalytic activities. The proposed local structures of the catalysts were confirmed by density functional theory modeling and X-ray absorption spectroscopy results. The catalysts exhibited unprecedented catalytic performance in glycerol dehydrogenation and CO2 hydrogenation, and showed heterogeneity and stability under harsh reaction conditions.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Physical
Kyung-Ryul Oh, Sanil E. Sivan, Changho Yoo, Do-Young Hong, Young Kyu Hwang
Summary: The study synthesized Ru-nanoparticles-supported MIL-101(Cr) catalyst and achieved good performance.
Article
Nanoscience & Nanotechnology
Kyung-Ryul Oh, Hyunjoon Lee, Gwang-Nam Yun, Changho Yoo, Ji Woong Yoon, Ali Awad, Hyun-Wook Jeong, Young Kyu Hwang
Summary: This study presents a facile one-pot synthesis method for PdCo-ZIFs with various Pd/Co ratios, where Pd(II) ions are successfully incorporated into the Co node sites of the ZIF structure. The bimetallic ZIFs exhibit different coordination geometries of Co (tetrahedral) and Pd (square planar) ions connected by the benzimidazolate ligand. The PdCo-ZIFs show significantly higher catalytic activity in the cycloaddition of CO2 to epoxides, indicating that the undercoordinated Co sites with distorted structure are the active sites rather than the incorporated Pd ions.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Environmental
Jaedeuk Park, Anil H. Valekar, Kyung-Ryul Oh, Ali Awad, In-Hyoup Song, Changho Yoo, Jinjoo An, Young Kyu Hwang
Summary: Biomass and CO2 conversion is important for addressing climate change and energy crisis. Current technologies for bio-based lactic acid production suffer from low productivity and waste production. This study proposes an integrated process for the conversion of glycerol and CO2 to lactic acid and formic acid derivatives, achieving high product yield and catalyst reusability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Sanil E. Sivan, Kyung-Ryul Oh, Ji-Woong Yoon, Changho Yoo, Young Kyu Hwang
Summary: In this study, molecular trimeric ruthenium carboxylate clusters (Ru-3 clusters) were successfully introduced into the pore channels of mesoporous metal-organic framework chromium terephthalate [MIL-101(Cr)] using a two-step post-synthetic strategy. The catalytic activity of the immobilized Ru-3 clusters in the pore channels was significantly enhanced compared to the bulk counterpart.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Multidisciplinary
Sehye Min, Jonghoon Choi, Changho Yoo, Peter M. Graham, Yunho Lee
Summary: This study demonstrates that a special nickel ion, supported by a rigid ligand, can activate C-H and C-O bonds at ambient conditions, playing a crucial role in synthetic applications.
Article
Chemistry, Inorganic & Nuclear
Jonghoon Choi, Yunho Lee
INORGANIC CHEMISTRY FRONTIERS
(2020)
Article
Chemistry, Inorganic & Nuclear
Seji Kim, Yunho Lee
INORGANIC CHEMISTRY FRONTIERS
(2020)