Review
Chemistry, Physical
Zan Lian, Chaowei Si, Faheem Jan, ShuaiKe Zhi, Bo Li
Summary: This study critically analyzes the formation of coke on Pt-based catalyst in propane dehydrogenation, covering aspects such as the nature of coke, development of kinetics model, and methods to prevent coke deposition. The focus is on providing insights for the rational design of future Pt catalysts, with discussions on regeneration of deactivated catalyst and new strategies like single atom/site and confined metal cluster approaches. This comprehensive summary serves as a solid foundation for further advancements in Pt catalysts for propane direct dehydrogenation.
Article
Chemistry, Physical
Linlin Wang, Xuetao Qin, Ting Sun, Xiangbin Cai, Mi Peng, Zhimin Jia, Xiaowen Chen, Ning Wang, Jiangyong Diao, Hongyang Liu, Ding Ma
Summary: This study focuses on the improvement of the direct dehydrogenation process of ethylbenzene by fabricating fully-exposed Pt clusters on a Sn-ND@G hybrid support. The fully-exposed Pt clusters enhance the catalytic performance and maintain good stability at 500 degrees Celsius.
Article
Materials Science, Multidisciplinary
Jiashun Wang, Linlin Wang, Jiangyong Diao, Xi Xie, Guoming Lin, Qing Jia, Hongyang Liu, Guoxin Sui
Summary: In this study, 3D SiC@C hybrid materials with core-shell structure were synthesized using a novel method and utilized as catalysts for direct dehydrogenation reactions, showing excellent activity and high yield rate. The research results suggest that this material has promising applications in catalytic dehydrogenation.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Physical
Xueya Dai, Tianlong Cao, Xingyu Lu, Yunli Bai, Wei Qi
Summary: A dual-path dehydrogenation route was developed to convert ethylbenzene to styrene efficiently using a Pd/hollow nanocarbon spheres catalyst. The catalyst exhibited high activity and selectivity, providing a rational design strategy for efficient alkane dehydrogenation reactions.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Narayanan Raman, Moritz Wolf, Martina Heller, Nina Heene-Wuerl, Nicola Taccardi, Marco Haumann, Peter Felfer, Peter Wasserscheid
Summary: This study investigated the use of supported catalytically active liquid metal solutions (SCALMS) of Pt in Ga for propane dehydrogenation in the 500 to 600 degrees C temperature range. The synthesis procedure using ultrasonication was compared to a previously reported organo-chemical route for gallium deposition. The SCALMS catalysts showed varying performance on different support materials, with SiC-based SCALMS demonstrating the highest activity and SiO2-based SCALMS exhibiting the highest stability and lowest cracking tendency at elevated temperatures.
Article
Chemistry, Physical
Yuwei Liu, Hongyang Liu, Lukai Luo, Baining Lin, Yonghua Zhou, Hanqing Wang, Ping Wang, Yu Mao
Summary: Phosphorus-doped boron nitride (PBN) has been confirmed as an effective metal-free catalyst for the direct dehydrogenation (DDH) of ethylbenzene to styrene. This study utilized barbituric acid as co-reactant sources to create B defects in PBN and mesoporous PBN (m-PBN) materials, improving their catalytic activity. The m-PBN with B defects delivered a high styrene production rate of 22.54 mmol(ST) g(-1) h(-1) and stable operation for 300 hours when grown on Al2O3, demonstrating the usefulness of defect tuning strategy in constructing efficient catalysts for styrene production.
Article
Chemistry, Physical
Alexander Sogaard, Ana Luiza de Oliveira, Nicola Taccardi, Marco Haumann, Peter Wasserscheid
Summary: Non-precious metal supported catalytically active liquid metal solutions show attractive performance in ethylene oligomerization. The Ga-rich systems forming liquid alloys exhibit a higher Ni-based catalytic activity than solid intermetallic compounds or Ni nanoparticles. The performance depends strongly on the applied Ga/Ni ratio in the Ga-Ni system on silica.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Guifang Ge, Xiaojing Wei, Hongchen Guo, Zhongkui Zhao
Summary: This work reports a novel method for preparing a nanodiamond-based monolithic foam catalyst, which exhibits enriched surface C = O groups, abundant structural defects, and improved nucleophilicity. Compared to traditional nanodiamond catalysts, this catalyst shows higher steady-state styrene rate and selectivity, as well as excellent long-term stability.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Applied
Rui Han, Jiangyong Diao, Sonu Kumar, Andrey Lyalin, Tetsuya Taketsugu, Gilberto Casillas, Christopher Richardson, Feng Liu, Chang Won Yoon, Hongyang Liu, Xudong Sun, Zhenguo Huang
Summary: Highly defective boron nitride with dispersed carbon doping shows outstanding performance in oxidative dehydrogenation reactions, attributed to the formation of carbon atomic clusters that enhance catalytic activity. Carbon doping is highly effective in defect formation and enhancing catalytic activity in oxidative dehydrogenation reactions.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Materials Science, Multidisciplinary
Yongfeng Li, Jiaojiao Su, Feng Yu, Xiaoliang Yan, Dahai Pan, Ruifeng Li, Yongxing Yang
Summary: The Co-containing catalysts supported on super-microporous Al2O3-ZrO2 with different Al/Zr molar ratios showed that the catalytic performance was highly influenced by the textural and chemical properties. Among them, the 2.5Co/AZ(0.7) catalyst with intermediate acidity, high surface area, and high metal dispersion exhibited the best performance in the dehydrogenation of ethylbenzene with CO2.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Physical
Yu Hou, Miao Xia, Yingyi Han, Xuefei Zhang, Yanbing Lu, Quan-Hong Yang, Zailai Xie
Summary: In this study, the influence of nitrogen doping on the catalytic properties of carbon nanocatalysts in the oxidative dehydrogenation (ODH) reaction was investigated. It was found that a nitrogen-doped nanocarbon catalyst, FA-180-1000, prepared by sulfuric acid-assisted hydrothermal carbonization, exhibited high ethylbenzene conversion (up to 62%) and styrene selectivity (-87%), outperforming other hydrothermal carbon-based catalysts. The findings provide new insights into the contribution of nitrogen doping to the ODH reaction and offer guidance for the rational design of carbon catalysts for hydrocarbon conversion.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Energy & Fuels
A. S. Fedotov, I. Uvarov, M. V. Tsodikov, S. Paul, P. Simon, M. Marinova, F. Dumeignil
Summary: This study investigates the characteristics of dehydrogenation of ethylbenzene to styrene using an original ceramic catalytic converter, showing significantly higher styrene yield and selectivity compared to conventional industrial catalysts, with a low degree of carbonization after 6 hours of reaction.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2021)
Article
Chemistry, Physical
Jiajia Shi, Yao Wei, Leilei Zhang, Dan Zhou, Zhounan Yu, Shengxin Zhang, Xiaofeng Yang, Ji Yang, Yang Su, Zheng Jiang, Aiqin Wang
Summary: This study reports for the first time the significant promotional effect of potassium on the Co-N-C single-atom catalyst for the direct dehydrogenation of ethylbenzene. The introduction of potassium resulted in the formation of Co-O-K moiety, which facilitated the heterolytic cleavage of the C-H bond of ethylbenzene, achieving the highest steady-state reaction rate reported thus far.
Article
Chemistry, Physical
Rui Ma, Junxian Gao, Jiajing Kou, David P. Dean, Christian J. Breckner, Kaijun Liang, Bo Zhou, Jeffrey T. Miller, Guojun Zou
Summary: In this study, a selective and stable Ni-based catalyst was successfully synthesized by settling Ni2+ cations into Al3+ vacancy on gamma-Al2O3. The catalyst showed superior performance in propane dehydrogenation (PDH) with over 93% propylene selectivity at propane conversions of 15-45%. The atomically dispersed Ni(II) sites with coordinatively unsaturated tetrahedral structures were found to facilitate the desorption of propylene and inhibit side reactions.
Article
Chemistry, Multidisciplinary
Ming Chen, Guangbin Dong
Summary: This article describes a platinum-catalyzed desaturation of cyclic ketones to their conjugated alpha,beta-unsaturated counterparts, which operates under mild conditions without the need for strong bases or acids. The method shows good functional group tolerance and can be applied to diverse and complex structures. The mechanism involves fast and reversible alpha-deprotonation followed by a rate-determining beta-hydrogen elimination process, distinguishing it from prior palladium-catalyzed methods.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Physical
Giulia Tuci, Andree Iemhoff, Andrea Rossin, Dmitry Yakhvarov, Marco Filippo Gatto, Rafael Balderas-Xicohtencatl, Linda Zhang, Michael Hirscher, Regina Palkovits, Cuong Pham-Huu, Giuliano Giambastiani
Summary: The development of functional porous samples for gas adsorption is a significant challenge in modern materials chemistry, particularly in addressing global warming and renewable energy storage solutions. In this study, a series of Covalent Triazine Frameworks (CTFs) with high specific surface area and nitrogen content were prepared and investigated for their gas uptake properties. Among the CTFs examined, CTF-pDCB/DCIHT(4) exhibited ideal morphological and chemical features for CO2 and H2 adsorption, outperforming other materials in terms of adsorption capacity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Lai Truong-Phuoc, Cuong Duong-Viet, Giulia Tuci, Andrea Rossin, Jean-Mario Nhut, Walid Baaziz, Ovidiu Ersen, Mehdi Arab, Alex Jourdan, Giuliano Giambastiani, Cuong Pham-Huu
Summary: This paper presents a series of graphite felt-sandwiched Ni-k/SiC composites with different metal loadings and their application in the CO2 methanation process under two heating setups. It reveals that radiofrequency-heated catalysts show superior performance compared to other heating methods. Induction heating technology demonstrates advantages in terms of process rates, energy efficiency, and process safety in the methanation process.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Physical
Xiong Zhang, Lai Truong-Phuoc, Xuemei Liao, Vasiliki Papaefthimiou, Matteo Pugliesi, Giulia Tuci, Giuliano Giambastiani, Sergey Pronkin, Cuong Pham-Huu
Summary: This study introduces a novel N-enriched C-network with Cl-FeN4 sites as a low-cost catalytic material, outperforming traditional Pt/C catalysts in ORR performance. By simplifying the chemical synthesis methods, highly reproducible synthetic paths were achieved, avoiding complex thermo-chemical treatments.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Inorganic & Nuclear
Giorgio Mercuri, Marco Moroni, Simona Galli, Clara Piccirillo, Agostina-Lina Capodilupo, Giulia Tuci, Giuliano Giambastiani, Andrea Rossin
Summary: Solvent-assisted ligand exchange in Zr-MOF UiO-67 led to the synthesis of mixed MOFs UiO-67-TpTp and UiO-67-TzTz with lower BET specific surface area but maintained thermal stability. These MOFs show potential as sensors for contaminants of emerging concern in water, with UiO-67-TzTz also exhibiting adsorption capabilities.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Giulia Tuci, Andrea Rossin, Xiong Zhang, Cuong Pham-Huu, Giuliano Giambastiani
Summary: Electrochemical synthesis is a powerful tool for sustainable production of chemicals, but the complexity of catalysts and the elusive nature of active sites limit their performance optimization. Exohedral surface functionalization of carbon materials can shed light on catalyst mechanisms and help understand electrocatalytic reaction mechanisms.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2022)
Article
Chemistry, Physical
Werner Oberhauser, Marco Frediani, Iman Mohammadi Dehcheshmeh, Claudio Evangelisti, Lorenzo Poggini, Laura Capozzoli, Peyman Najafi Moghadam
Summary: Polymer-supported PdCu alloy nanoparticles with a Pd:Cu atom ratio of 1 were synthesized and applied in the semi-hydrogenation of alkynols, showing high selectivity and mild reaction conditions.
Article
Chemistry, Inorganic & Nuclear
Emanuela Pitzalis, Rinaldo Psaro, Claudio Evangelisti
Summary: The increasing demand for metal catalysts has led to the development of new approaches for highly efficient catalyst synthesis. Metal and organometallic vapor-based synthesis methods offer great control over the morphological and structural features of the supported metal active phase, enabling the design of advanced catalysts and a better understanding of reaction mechanisms at the atomic scale. In this mini-review, recent advances in the synthesis of heterogeneous catalysts using vapors of metal or organometallic complexes as precursors are described, with a focus on atomic layer deposition, cluster beam deposition, and metal vapor synthesis. The catalytic applications and potential of these three approaches are discussed.
INORGANICA CHIMICA ACTA
(2022)
Article
Chemistry, Physical
Lu Feng, Sajjad Ali, Chi Xu, Shuo Cao, Giulia Tuci, Giuliano Giambastiani, Cuong Pham-Huu, Yuefeng Liu
Summary: Nanodiamonds show great promise as metal-free catalysts for alkane-to-alkene conversion, especially under oxygen-free direct dehydrogenation conditions, with the potential active sites being ortho-quinone groups at the edge of cubic-sp(3) NDs. Further studies are needed to fully understand the mechanism and nature of active sites in carbon catalysts for alkane steam-free DDH.
Article
Chemistry, Multidisciplinary
Patricia Perez Schmidt, Katiuscia Pagano, Cristina Lenardi, Marta Penconi, Ruth Mateu Ferrando, Claudio Evangelisti, Luigi Lay, Laura Ragona, Marcello Marelli, Laura Polito
Summary: This study presents a simple photo-induced synthesis method for the production of Glyco-UAuNPs using a reliable microfluidic approach at room temperature. The method eliminates the need for chemical reductants, templating agents, or co-solvents and demonstrates good feasibility and stability. Using nuclear magnetic resonance spectroscopy, the study shows a linear correlation between the exposed thiol ligands on the UAuNPs and the ligand concentration in the initial mixture, providing a precise design method for engineered UAuNPs or smart hybrid nano-systems.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Demetrio Scelta, Samuele Fanetti, Selene Berni, Matteo Ceppatelli, Roberto Bini
Summary: Methane hydrate is widely present in the Universe and its properties have been extensively studied. This research provides new insights into the crystalline structures, decomposition conditions, and molten fluid characteristics of methane hydrate under high pressure.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Physical
Marcello Marelli, Federica Zaccheria, Nicoletta Ravasio, Emanuela Pitzalis, Youcef Didi, Anne Galarneau, Nicola Scotti, Claudio Evangelisti
Summary: A simple and reproducible method called flow chemisorption hydrolysis (flow-CH) was reported for the synthesis of Cu-based heterogeneous catalysts.The method enabled the synthesis of size-controlled CuO nanoparticles (mean diameter 2.9 nm) that are homogeneously dispersed into meso-/macroporous silica monoliths.The CuO@SiO2-MN catalysts exhibited remarkable activity and high selectivity in the styrene oxide ring opening reaction under continuous flow-through conditions, surpassing the performance of previously reported CuO/SiO2 catalysts.
Review
Chemistry, Physical
Soroosh Saeedi, Xuan Trung Nguyen, Filippo Bossola, Claudio Evangelisti, Vladimiro Dal Santo
Summary: In this review, the performance of Ni-based catalysts supported on Mg(Al)O for SMR and DRM processes is analyzed in-depth. It is found that bimetallic catalysts, with the addition of a small amount of a second metal to Ni, can improve the catalyst durability. Innovative synthesis and pretreatment methods have also shown relevant improvements in enhancing the overall H-2 productivity.
Article
Chemistry, Physical
Demetrio Scelta, Matteo Ceppatelli, Roberto Bini, Anna Pakhomova, Gaston Garbarino, Mohamed Mezouar, Mario Santoro
Summary: Experimental investigations were conducted on the high temperature transformation of amorphous polymeric carbon monoxide (pCO) in the pressure range of 47-120 GPa. The results showed that the decomposition of a-pCO into CO2 and likely a mixture of amorphous CxOy suboxides and amorphous carbon occurred, supporting the theoretical understanding. It was also found that the decomposition was strongly pressure-dependent with a steep pressure-temperature kinetic barrier.
JOURNAL OF CHEMICAL PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Marta Stucchi, Alessandro Vomeri, Sandor Stichleutner, Karoly Lazar, Emanuela Pitzalis, Claudio Evangelisti, Laura Prati
Summary: Acetone-stabilized Au- and Sn-solvated metal atoms were used to prepare Au and AuSn-supported catalysts, and their morphological and physical properties were studied. It was found that the bare supports played a significant role in the reaction mechanism, and the interaction between Au and Sn could affect the catalytic behavior.
CHEMISTRY-SWITZERLAND
(2023)