Article
Chemistry, Multidisciplinary
Thalita S. Galhardo, Adriano H. Braga, Bruno H. Arpini, Janos Szanyi, Renato Goncalves, Bruno F. Zornio, Caetano R. Miranda, Liane M. Rossi
Summary: Control of the selectivity of CO2 hydrogenation catalysts is a fundamental challenge. In this study, it was found that changing the surface of a common Ni catalyst can lead to high selectivity toward CO formation in CO2 hydrogenation processes, representing an important step towards high-added-value products.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Liliana P. L. Gonsalves, Jerrik Mielby, O. Salome G. P. Soares, Juliana P. S. Sousa, Dmitri Y. Petrovykh, Oleg I. Lebedev, M. Fernando R. Pereira, Soren Kegnaes, Yury V. Kolen'ko
Summary: Understanding the reaction mechanism on different materials can optimize the development of cost-efficient, high-performing catalysts for CO2 methanation at low temperatures. Ni nanoparticles supported on a carbon/CeO2 composite and pure CeO2 show excellent low-temperature activity, achieving up to 87% CO2 conversion with full selectivity towards CH4 at 370 degrees C. The study of the reaction mechanism reveals that the CO2 methanation reaction follows a combination of the CO and formate pathways on pure CeO2, while it only follows the formate pathway on the carbon/CeO2 composite.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Energy & Fuels
Eduardo Poggio-Fraccari, Antonella Abele, Nicolas Zitta, Javier Francesconi, Fernando Marino
Summary: The combination of Water Gas Shift (WGS) and CO preferential oxidation (COPROX) reactions is considered effective for CO removal in H-2 feed for PEM fuel cells. Monolithic catalysts coated with Ce or Ce-Pr and Cu or Cu-Ni showed promising results with a 35% mass increase. Adjusting the Pr content in WGS monoliths and using Cu/ceria monolithic samples for COPROX resulted in optimal activity-selectivity ratios. Operating at around 130 degrees C with a contact time of 0.1 g.s/cm^3 and an O-2/CO = 1 M ratio was found to be the most suitable parameters set.
Article
Multidisciplinary Sciences
Mohamed S. Challiwala, Hanif A. Choudhury, Dingdi Wang, Mahmoud M. El-Halwagi, Eric Weitz, Nimir O. Elbashir
Summary: This study demonstrates two patented processes for converting CO2 and CH4 into solid carbon as a potential carbon capture and sequestration technique. The first process can reduce energy requirement by at least 50% and achieve at least 65% CO2 conversion, while the second process offers an alternative pathway for the regeneration/reactivation of spent DRM/CARGEN catalyst by using CO2.
SCIENTIFIC REPORTS
(2021)
Article
Chemistry, Physical
Dongjiang Jiang, Ying Shi, Guofeng Zhao, Xiaodi Gong, Jichang Liu, Dengpeng Lan, Lidong Zhang, Jianping Ge, Huimin Fang, Denghui Cheng, Haitao Xu
Summary: This study demonstrates a feasible strategy for converting CO2 into CO using nanocable catalysts Pt-Ni@UiO-67, and the catalytic performance can be improved by adjusting the thickness of the UiO-67 membrane. The results show that an appropriate thickness of the UiO-67 membrane can enhance CO2 conversion.
MATERIALS TODAY ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Weijian Wang, Gianni Olguin, Dachamir Hotza, Majid Ali Seelro, Weng Fu, Yuan Gao, Guozhao Ji
Summary: This article summarizes the research on in-situ separation of hydrogen using inorganic membranes, focusing on the advantages and disadvantages of palladium, silica, and zeolite molecular sieve membranes to enhance hydrogen production from thermochemical reactions.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2022)
Article
Chemistry, Applied
Andrea Fasolini, Elena Spennati, Sina Ebrahim Atakoohi, Matteo Percivale, Guido Busca, Francesco Basile, Gabriella Garbarino
Summary: Ni/Mg/Al mixed oxides were prepared from layered double hydroxides of the hydrotalcite family. The prepared materials consist of a rock-salt type Mg1-xNixO solid solution with Al3+ in the tetrahedral interstices. These materials, when activated at high temperature, convert into optimal size supported Ni metal catalysts which show high activity and selectivity for CO2 methanation. The presence of basic oxides as activating components enhances the adsorption of CO2 on the support, forming surface (bi)carbonates as active species.
Article
Chemistry, Physical
A. V. Vutolkina, G. Baygildin, A. P. Glotov, K. A. Cherednichenko, A. L. Maksimov, E. A. Karakhanov
Summary: The Ni-Mo catalysts formed through high-temperature decomposition of water-soluble metal precursors in invert sulfur-containing emulsions showed high HDS activity under various reaction conditions, and can be reused multiple times in sulfur-assisted HDS processes.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Paola Riani, Elena Spennati, Maria Villa Garcia, Vicente Sanchez Escribano, Guido Busca, Gabriella Garbarino
Summary: Samples of NiO on silica and alumina doped with silica were prepared and characterized. The SiO2 support showed low Ni dispersion ability, producing segregated NiO particles and dispersed Ni2+ in exchange sites, while the Si-doped alumina formed a surface spinel monolayer phase, leading to the formation of NiO. H2-TPR results indicated that NiO particles are more easily reduced than Ni species. Low loading Ni/SiO2 catalysts showed high selectivity and moderate activity for RWGS reaction, while high loading Ni/SiO2 catalysts showed both methanation and RWGS with short-term deactivation for methanation. Ni on alumina-rich carriers exhibited high activity and selectivity for methanation, attributed to small nickel clusters or metal particles interacting with alumina.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Applied
Hui-Ju Byeon, Kyung-Won Jeon, Hak-Min Kim, Yong-Hee Lee, Yu-Seung Heo, Min-Ju Park, Dae-Woon Jeong
Summary: In this study, alkali and alkaline earth metal-promoted Ni-CeO2 catalysts were developed for the water-gas shift reaction to increase hydrogen production by suppressing methanation. Various characterization techniques were employed to determine the relationship between catalyst activity and properties. The results showed that the promoted Ni-CeO2 catalysts effectively suppressed methanation, with the Ca/NiCeO2 catalyst exhibiting the highest activity and stability due to its high oxygen storage capacity.
FUEL PROCESSING TECHNOLOGY
(2022)
Article
Energy & Fuels
Loukia-Pantzechroula Merkouri, Estelle le Sache, Laura Pastor-Perez, Melis S. Duyar, Tomas Ramirez Reina
Summary: This study investigates the performance of a combination catalyst of Ni and Ru in reactions such as dry reforming of methane, reverse water-gas shift, and CO2 methanation. The catalyst shows excellent stability in CO2 hydrogenation reactions but suffers from coke formation in dry reforming. Overall, the study highlights the versatility of the Ni-Ru/CeO2-Al2O3 catalyst for gas phase CO2 recycling and its switchable selectivity control.
Article
Chemistry, Multidisciplinary
Na Li, Zhiyuan Li, Nan Wang, Jun Yu, Yusen Yang
Summary: The Na-loaded Ni@TiOx-1Na catalyst shows enhanced WGSR activity at lower temperature, with a stronger metal-support interaction and increased interfacial sites serving as dual-active sites for the reaction, leading to improved catalytic performance.
Article
Chemistry, Physical
Liang Shen, Wenhao Zhang, Yifei Feng, Jing Xu, Minghui Zhu
Summary: Hydrogenation of CO2 to produce high-value chemicals is important for addressing environmental and energy concerns. Understanding catalyst selectivity control is crucial for this process. This study focuses on elucidating the selectivity regulation of Zn on Ni catalysts, exploring the relationship between their structure and selectivity. It is found that Zn forms an alloy with Ni and interacts with the support, significantly affecting the catalytic performance and CO2 activation mechanism.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Engineering, Chemical
Lizandra M. N. C. Alves, Mayra P. Almeida, Martin Ayala, Caleb D. Watson, Gary Jacobs, Raimundo C. Rabelo-Neto, Fabio B. Noronha, Lisiane V. Mattos
Summary: Zirconia was used to support Ru, Ni, and Ru-Ni bimetallic nanoparticles for CO2 methanation. The Ru/ZrO2 catalyst exhibited the highest CO2 reaction rate and CH4 selectivity. The performance improvement was attributed to the Ru-zirconia interface and Ru on-top atoms promoting reverse water gas shift and CO hydrogenation reactions.
CHEMICAL ENGINEERING SCIENCE
(2021)
Article
Chemistry, Physical
Vincenzo Palma, Russell Goodall, Adam Thompson, Concetta Ruocco, Simona Renda, Richard Leach, Marco Martino
Summary: The study demonstrated a significant correlation between the textural properties of the structure and the preparation technique, highlighting the suitability of chemical conversion coating for highly porous structures. The experimental results showed that compressed aluminium foams exhibited higher catalytic activity compared to uncompressed foams, indicating the importance of structure textural properties for catalyst performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Applied
Zhoufeng Bian, Sibudjing Kawi
Article
Thermodynamics
Ziwei Li, Min Li, Jangam Ashok, Kawi Sibudjing
ENERGY CONVERSION AND MANAGEMENT
(2019)
Article
Engineering, Environmental
Subhasis Pati, Ashok Jangam, Wang Zhigang, Nikita Dewangan, Wai Ming Hui, Sibudjing Kawi
CHEMICAL ENGINEERING JOURNAL
(2019)
Article
Engineering, Chemical
Zhigang Wang, Zhoufeng Bian, Nikita Dewangan, Jeff Xu, Sibudjing Kawi
JOURNAL OF MEMBRANE SCIENCE
(2019)
Article
Chemistry, Physical
Parviz Yazdani, Bo Wang, Sajjad Rimaz, Sibudjing Kawi, Armando Borgna
MOLECULAR CATALYSIS
(2019)
Article
Engineering, Chemical
Ning Han, Chi Zhang, Xiaoyao Tan, Zhigang Wang, Sibudjing Kawi, Shaomin Liu
JOURNAL OF MEMBRANE SCIENCE
(2019)
Article
Engineering, Environmental
Tianjia Chen, Zhigang Wang, Lina Liu, Subhasis Pati, Ming Hui Wai, Sibudjing Kawi
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Chemistry, Applied
Xingyuan Gao, Ping Cai, Ziyi Wang, Xiaomei Lv, Sibudjing Kawi
Summary: CO2 utilizations and conversions play a significant role in reducing greenhouse gas emissions and regenerating industrial exhausts. Metal oxides, as catalysts, have been proven effective in adsorbing and activating CO2 based on surface acidity/basicity and oxygen defects. This review comprehensively summarizes the impacts of these physicochemical properties of metal oxides on CO2 adsorption and activation, with a focus on CO2 conversion activity, product yield selectivity, and catalyst stability in reforming and hydrogenation reactions. Additionally, the review explores the structure-performance relationships, reaction/deactivation mechanisms, and origins of surface acidity/basicity and oxygen defects.
TOPICS IN CATALYSIS
(2023)
Article
Engineering, Environmental
Guoqiang Song, Claudia Li, Wenjun Zhou, Libo Wu, Kang Hui Lim, Feiyang Hu, Tianchang Wang, Shaomin Liu, Zhifeng Ren, Sibudjing Kawi
Summary: This study reports a structure-reconstruction strategy based on a micropore-confined process to prepare yolk-shell catalysts with highly dispersed metallic nickel. The size of the nickel particles has a significant impact on the rates of methane decomposition, penetration of dissolved carbon, and growth of carbon nanotubes (CNTs), which provides an important route for the design of functionalized CDM catalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Polymer Science
Yingjie Guo, Zan Chen, Xue Hu, Yawei Du, Cuijia Duan, Claudia Li, Sibudjing Kawi, Yinhui Li
Summary: Imino hypercrosslinked polymers (NH-HCPs), amino hypercrosslinked polymers (NH2-HCPs), and carboxyl hypercrosslinked polymers (COOH-HCPs) were synthesized as highly efficient adsorbents for doxycycline hydrochloride (DOX) in water. The NH-HCPs exhibited the highest specific surface area and adsorption capacity, while the COOH-HCPs showed the strongest adsorption capability. Structural adjustments played a more significant role in improving adsorption performance compared to functional adjustments. The primary DOX adsorption mechanism involved hydrogen bonding and other mechanisms.
JOURNAL OF APPLIED POLYMER SCIENCE
(2023)
Article
Chemistry, Physical
Xiaoyu Han, Tiantian Xiao, Maoshuai Li, Ziwen Hao, Jiyi Chen, Yutong Pan, Xiaohui Zi, Heng Zhang, Shibo Xi, Hui Ming Wai, Sibudjing Kawi, Xinbin Ma
Summary: CuGaZrOx solid solution catalysts show promise for the selective hydrogenation of CO2 to methanol. The structural complexity of the catalyst presents a challenge to understanding the nature of active sites. This study reveals that synergistic interactions between copper and gallium species enhance the capacity for CO2 adsorption/activation and promote the hydrogenation of CO2 to form methanol via a formate pathway.
Review
Chemistry, Physical
Zhikun Zhang, Ziyan Yang, Lina Liu, Yaru Wang, Sibudjing Kawi
Summary: This review provides a comprehensive overview of the catalytic performance and mechanism of single-atom catalysts (SACs) in the thermocatalytic conversion of CO2 to C1 chemicals. SACs offer advantages in performance tuning through the regulation of coordination environment. However, there are still limitations in current studies that need to be addressed in order to drive decarbonization and greenhouse gas cycling in industries.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Yuepeng Hei, Zuojun Lu, Claudia Li, Jian Song, Bo Meng, Naitao Yang, Sibudjing Kawi, Jaka Sunarso, Xiaoyao Tan, Shaomin Liu
Summary: In this study, Ce0.8Y0.2O2-delta-BaCe0.8Y0.2O3-delta (YDC-BCY) hollow fiber (HF) membranes were developed and characterized for their hydrogen (H-2) permeation fluxes. By synthesizing YDC and BCY ceramic powders using the sol-gel method and fabricating YDC-BCY dual-phase ceramic HF membranes, it was found that the YDC/BCY molar ratio of 4:1 exhibited the highest hydrogen flux under certain conditions.
Meeting Abstract
Chemistry, Multidisciplinary
Zhigang Wang, Ziwei Li, Nikita Dewangan, Yifan Cui, Sonali Das, Sibudjing Kawi
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
Meeting Abstract
Chemistry, Multidisciplinary
Plaifa Hongmanorom, Sibudjing Kawi
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY
(2019)
