Article
Energy & Fuels
Dalia Liuzzi, Francisco J. Perez-Alonso, Sergio Rojas
Summary: Ru-Co/Al2O3 and Ru-Fe/Al2O3 catalysts prepared by reduction-deposition method exhibit high activity in Fischer-Tropsch Synthesis, showing different conversion rates and product selectivity. The interaction between Ru and Co in Ru-Co/Al2O3 enhances the activity, while Ru-Fe/Al2O3 displays superior initial performance but declines over time, with less enriched products compared to Ru/Al2O3.
Article
Chemistry, Physical
Jiachun Chai, Robert Pestman, Wei Chen, A. Iulian Dugulan, Bo Feng, Zhuowu Men, Peng Wang, Emiel J. M. Hensen
Summary: The formation of Fe-carbide phases is crucial for Fischer-Tropsch synthesis catalysts. Carburization of Raney Fe showed that CO dissociation occurs at -150 degrees C, while C diffusion into metallic Fe requires higher temperature. The carburization rate increases with H2/CO ratio, leading to predominant formation of carbon-rich ε'-carbide.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Applied
C. F. Toncon-Leal, J. F. Munera, J. J. Arroyo-Gomez, K. Sapag
Summary: Iron, cobalt, and bimetallic catalysts were synthesized and impregnated on mesoporous silica support to study their behavior in Fischer-Tropsch Synthesis. Bimetallic catalysts exhibited higher catalytic activity than monometallic catalysts.
Article
Chemistry, Physical
Yuzhen Ge, Tangsheng Zou, Antonio J. Martin, Javier Perez-Ramirez
Summary: This study investigates the impact of highly dispersed metal oxides of Co-Cu, Cu-Fe, and Co-Fe m-FTS systems on the direct synthesis of higher alcohols (HA) and demonstrates the viability of ZrO2 as a promoter. The addition of ZrO2 significantly increases HA productivity, with the Cu(1)Co(4)@ZrO2-5 catalyst exhibiting a 2.5-fold increase compared to its ZrO2-free counterpart. The Co1Fe4@ZrO2-10 catalyst shows the most productive performance among similar systems.
Article
Chemistry, Physical
Zixu Yang, Zhengpai Zhang, Yitao Liu, Xiaoxu Ding, Jun Zhang, Jing Xu, Yifan Han
Summary: Highly dispersed FeMn bimetallic nanoparticles prepared by a low-temperature co-precipitation method were used for direct CO hydrogenation to produce light olefins. The strong interaction between Fe and Mn stabilized the Fe1-xMnxO phase during activation, while Mn decreased the surface energy of nanocrystals and reduced agglomeration, resulting in smaller particle sizes of Mn-promoted catalysts.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Amel Cydric Ghogia, Bruno F. Machado, Simon Cayez, Ange Nzihou, Philippe Serp, Katerina Soulantica, Doan Pham Minh
Summary: The chemistry between the Co precursor and the support during catalyst preparation has a crucial impact on the catalyst properties, while the CNT surface chemistry also influences the characteristics of the catalyst. The study found an inverse correlation between Co particle size and activity, highlighting the importance of precursor/support couple in the structure and performance of Co/CNT catalysts.
JOURNAL OF CATALYSIS
(2021)
Article
Green & Sustainable Science & Technology
Higor A. Garona, Fabio M. Cavalcanti, Thiago F. de Abreu, Martin Schmal, Rita M. B. Alves
Summary: This study used Machine Learning models to predict optimal reaction conditions for Fischer-Tropsch Synthesis, showing the efficacy of neural networks in predicting key variables. In comparison to recent studies, this research included more variables in the model such as catalyst support, active phase, and promoters. The Fe-based catalyst showed the highest light olefins selectivity and yield at optimal conditions, despite emitting the most carbon dioxide.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Chemistry, Physical
Joakim Tafjord, Samuel K. Regli, Achim Iulian Dugulan, Magnus Ronning, Erling Rytter, Anders Holmen, Rune Myrstad, Jia Yang
Summary: Transition metals supported on carbons are important in catalysis and energy storage. Pyrolysis of metal alginate can produce highly active catalysts for Fischer-Tropsch synthesis. This study explores the evolution of carbon and transition metal during pyrolysis and provides valuable knowledge for rational design of metal-alginate-based materials.
APPLIED CATALYSIS A-GENERAL
(2022)
Article
Chemistry, Applied
Yu Zhang, Ming Qing, Hong Wang, Xing-Wu Liu, Suyao Liu, Hongliu Wan, Linge Li, Xiang Gao, Yong Yang, Xiao-Dong Wen, Yong-Wang Li
Summary: The configuration between SiO2 and iron species plays a crucial role in determining the structure and performance of SiO2-promoted Fe-based Fischer-Tropsch synthesis catalysts. The construction of a SiO2 shell around iron species can inhibit iron oxides reduction and increase diffusion resistance, while physically separating iron species from SiO2 shell can effectively hinder sintering. Impregnated and precipitated Fe-Si catalysts experienced aggregation, and their performance correlated with the strength of Fe-SiO2 interaction.
Article
Chemistry, Physical
Tshepo Molefe, Dean Barrett, Beatriz Diaz, Roy Forbes, Neil J. Coville
Summary: This study reports on the synthesis and application of osmium nanoparticles supported on and/or encapsulated in hollow carbon spheres for Fischer-Tropsch Synthesis (FTS). It is demonstrated that the interaction between osmium and cobalt has a significant effect on the catalyst activity when loaded together. Proximity of osmium and cobalt leads to higher FTS activity and C5+ production through the primary spillover effect. This study reveals the effect of osmium on FTS catalysts for the first time.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
Erling Rytter, Christian Aaserud, Anne-Mette Hilmen, Edvard Bergene, Anders Holmen
Summary: The pretreatment and reduction time significantly influence the catalytic activity of cobalt foil catalysts, increasing the available surface area and cobalt site density, and enhancing the olefin hydrogenation reaction and selectivity to heavier components. However, prolonged reduction time leads to sintering of cobalt crystallites, while too short of a reduction time results in incomplete reduction.
Article
Energy & Fuels
Chao Wang, Huaqing Zhu, Juan Zhang, Zhijun Huang, Jiangang Chen
Summary: A series of Fe-Mn bimetallic catalysts with different pretreatment atmospheres were used for the Fischer-Tropsch synthesis (FTS). The structure of Fe-Mn bimetallic catalysts was analyzed and the effect of different pretreatment atmospheres on reduction efficiency was investigated. It was found that nitrided Fe-Mn catalysts exhibited better stability and higher light olefin selectivity.
Article
Chemistry, Applied
Sergei A. Chernyak, Dmitrii N. Stolbov, Konstantin I. Maslakov, Sergey V. Maksimov, Ruslan V. Kazantsev, Oleg L. Eliseev, Dmitry O. Moskovskikh, Serguei V. Savilov
Summary: Different carbon nanomaterials are considered promising supports for Fischer-Tropsch synthesis catalysts. This study successfully synthesized consolidated Co and Fe catalysts supported on graphene nanoflakes for the first time using spark plasma sintering. The results showed that sintering significantly increased the activity and TOF of the Co catalyst, while decreasing the activity of the Fe catalyst but increasing its C5+ selectivity and olefins to paraffins ratio. These improvements were attributed to the unique structure of the nanoparticles and the close contact between the support and the metal particles.
Article
Chemistry, Physical
Jane N. Agwara, Nikki J. Bakas, Michael L. Neidig, Marc D. Porosoff
Summary: Fe-based catalysts encapsulated within ZSM-5 exhibit improved selectivity towards desired light olefins in Fischer-Tropsch synthesis. While the encapsulation process may destabilize the Fe-based active phase, the core-shell catalysts demonstrate enhanced performance compared to the control samples.
Article
Chemistry, Physical
Xiaoxue Han, Qiao Zhao, Huiyong Gong, Chongyang Wei, Jing Lv, Yue Wang, Mei-yan Wang, Shouying Huang, Xinbin Ma
Summary: In this study, Fe-oxide interfaces were constructed to investigate their effect on phase transformation and Fischer-Tropsch synthesis (FTS) performance. By correlating performance to the composition of iron species, the crucial role of Fe2.2C in high CO conversion and C5+ productivity has been confirmed. Furthermore, a heterogeneous spatial distribution of iron carbides and oxides induced by Fe-oxide interfaces was observed. This study provides insights for iron carbides formation and stability by modulating interfaces, which guides the further development of Fe-based FTS catalysts.
Article
Chemistry, Physical
Zhenxin Liu, Yingying Xue, Depeng Wu, Yu Xing, Shaoming Fang
Article
Chemistry, Multidisciplinary
Zhenxin Liu, Yu Xing, Yingying Xue, Depeng Wu, Shaoming Fang
JOURNAL OF NANOPARTICLE RESEARCH
(2015)
Article
Chemistry, Physical
Yu Xing, Zhenxin Liu, Yingying Xue, Depeng Wu, Shaoming Fang
Article
Chemistry, Multidisciplinary
Yongbiao Zhai, Yingying Xue, Zheng Chen, Min Chen, Buhuan Wang, Jiangang Chen
Article
Engineering, Chemical
Zheng Chen, Juan Zhang, Mohamed Abbas, Yingying Xue, Jiaqiang Sun, Kefeng Liu, Jiangang Chen
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2017)
Article
Chemistry, Physical
Yingying Xue, Yongbiao Zhai, Zheng Chen, Juan Zhang, Jiaqiang Sun, Mohamed Abbas, Yilong Chen, Jiangang Chen
Article
Chemistry, Applied
Mohamed Abbas, Yingying Xue, Juan Zhang, Jiangang Chen
FUEL PROCESSING TECHNOLOGY
(2019)
Article
Energy & Fuels
Yingying Xue, Shengyang Duan, Guangying Chen, Jiaqiang Sun, Mohamed Abbas, Jiangang Chen
Article
Engineering, Chemical
Yingying Xue, Zengchen Liu, Yaxuan Zhang, Shengyang Duan, Jiangang Chen
Summary: This study reveals that the performance of iron-based catalysts can be modified by simply changing the percentage of Fe(II)/Fe(III) in the raw materials. The catalysts prepared by FeCl2·4H2O exhibit higher CO conversion, lower methane selectivity, and higher C-2-C-4 olefin-to-paraffin ratio, which can be mainly attributed to the higher Fe2+ content in the unreduced state.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Zengchen Liu, Like Wang, Baodui Wang, Yahong Chen, Fengshou Tian, Yingying Xue, Yanxia Li, Wenping Zhu, Weijie Yang
Summary: Carbonized polymer dots (CPDs), also known as carbon dots (CDs), have attracted wide interest due to their unique water solubility, fluorescence properties, and rich surface functional groups. However, the directional tuning of their fluorescence properties remains incomplete. In this study, bicolor fluorescence emission CPDs were successfully prepared by modulating the pH of the solution, and it was found that the fluorescence properties were regulated by the diameter and surface groups of the carbon cores. The pH value also affected the nucleation process.
Article
Chemistry, Physical
Yingying Xue, Shengyang Duan, Tianlei Du, Yi Chen, Hongkun Chen, Mengting Li, Jiangang Chen
Summary: The superhydrophobic/superoleophilic Cu-loaded FeNi foam was successfully prepared using an in-situ hydrothermal approach and subsequent stearic acid modification. The surface structure and properties were precisely controlled, resulting in strong hydrophobicity and good stability. This environmentally friendly method provides a facile way to fabricate metal surfaces with special superwetting behavior, expanding the application of metal foam in wastewater treatment.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Chemistry, Multidisciplinary
Yingying Xue, Shengyang Duan, Zihao Liu, Miaomiao Cui, Zhanghui Xiong, Zengchen Liu, Jiangang Chen
Summary: Stable Fe-based superhydrophobic surfaces are constructed using a hydrothermal method and an autocatalytic CO hydrogenation reaction. The use of syngas as an alternative to traditional low-free-energy materials is proposed. Syngas may serve as a powerful tool for fabricating superhydrophobic surfaces that can catalyze the CO hydrogenation reaction.
CHEMICAL COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Yingying Xue, Jiaqiang Sun, Mohamed Abbas, Zheng Chen, Pengfei Wang, Yilong Chen, Jiangang Chen
NEW JOURNAL OF CHEMISTRY
(2019)
Article
Chemistry, Physical
Zi-Ye Liu, Qian-Yu Wang, Ji-Ming Hu
Summary: In this study, a layered carbon dot composite catalyst (NiFe LDH@CDs) was prepared using a one-step coprecipitation method, without the need for heating or hydrothermal treatment. The CD-functionalized catalyst facilitated rapid charge transfer and accelerated the oxygen evolution reaction. Additionally, the heterojunction structure formed between NiFe LDH and CDs efficiently suppressed photoelectron-hole recombination.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Rohit Kumar, Ankit Kumar Srivastava, Palaniyappan Nagarasu, Vedichi Madhu, Ekambaram Balaraman
Summary: We designed and synthesized a NN-CoII bidentate complex and used it for the amination of alcohols under mild and solventless conditions. The complex exhibited good reactivity towards both primary and sterically hindered secondary alcohols, providing high yields of amines. The pyrazole moiety in the ligand played a crucial role in the reaction. Furthermore, we demonstrated the reusability of the complex as a homogeneous cobalt catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shivanand Chettri, Liang-Ting Wu, Sagarmani Rasaily, Debesh Sharma, Bikram Gurung, Rajani Dewan, Sudarsan Tamang, Jyh-Chiang Jiang, Anand Pariyar
Summary: Replicating the enzymatic surface microenvironment in vitro is challenging, but constructing an analogous model could facilitate our understanding of surface effects and aid in developing an efficient bioinspired catalytic system. In this study, five unique Cu2O morphologies were generated, and the surface morphology variations were found to be a consequence of differences in the exposure of low-index facets. The reactivity of Cu2O was found to be influenced by the proportion of {110} planes, with r-Cu2O exhibiting the highest reactivity.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Yong Tang, Jianhao Qiu, Dingliang Dai, Guanglu Xia, Lu Zhang, Jianfeng Yao
Summary: Defect engineering has been shown to improve the photocatalytic performance. This study investigated the use of defect-rich UiO-66-NH2 wrapped by ZnIn2S4 as a catalyst for photocatalytic H2O2 production. The defects in UiO-66-NH2 enhanced O-2 adsorption and charge separation, leading to higher H2O2 yield. The insights from this work can advance the research in defect engineering of MOFs and photocatalytic H2O2 synthesis.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Ruiyang Qu, Shuxin Mao, Jana Weiss, Vita A. Kondratenko, Evgenii V. Kondratenko, Stephan Bartling, Haifeng Qi, Annette-Enrica Surkus, Kathrin Junge, Matthias Beller
Summary: The hydrogenation of amides, a challenging reaction usually performed at high temperatures, has been achieved under milder conditions using a new Pt-MoOx/TiO2 catalyst. This catalyst system enables the selective hydrogenation of various amides and imides.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Xiaoran Niu, Ao Wang, Lei Tong, Lei Wang, Yuan Kong, Chenliang Su, Hai-Wei Liang
Summary: This study introduces a novel intermetallic PdCu3 catalyst supported on defective nanodiamond-graphene (ND@G), which exhibits high selectivity (95%) and remarkable activity (turnover frequency: 2940 h(-1)), six times higher than that of the commercial Lindlar catalyst.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Review
Chemistry, Physical
Zhiyuan Zheng, Yiming Yue, Hongying Zhuo, Qinggang Liu, Yanqiang Huang
Summary: This review presents the recent research advances on single-atom catalysis for deep reduction of CO2. Detailed introductions and summaries were classified into three categories based on proton-coupled multi-electron transfer approaches: strengthening metal-support interaction, rational design and regulation of coordination environment, and development of SACs with multi-atom active sites. The challenges and future research directions in the field of SACs for CO2 reduction are also proposed.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
Shiv Kumar, Paramita Datta, Anup Bhunia, Swadhin K. Mandal
Summary: This article reports a transition-metal-free process for in situ denitrogenation of tosylhydrazones, resulting in the production of various sulfones. The authors used a phenalenyl-based odd alternant hydrocarbon as a photoredox catalyst, which acted as a potent oxidant to facilitate the denitrogenation reaction. The method showed wide functional-group tolerance and high yields, making it suitable for late-stage modification of natural products.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
Article
Chemistry, Physical
L. A. Luque-Alvarez, J. Gonzalez-Arias, F. Romero-Sarria, T. R. Reina, L. F. Bobadilla, J. A. Odriozola
Summary: Currently, the production of acetic acid through the carbonylation reaction of methanol has limitations, leading to the exploration of alternative methods using heterogeneous catalysts. This study investigates the methanol carbonylation reaction over a Cu-H-MOR catalyst and proposes a reaction mechanism based on the catalytic behavior and performance of the catalyst. The results provide insights into the reaction mechanism and the involvement of acid and redox centers.
CATALYSIS SCIENCE & TECHNOLOGY
(2024)
