Article
Chemistry, Multidisciplinary
Hu Liu, Xuexiang Li, Zhenhui Ma, Mingzi Sun, Menggang Li, Zhenyu Zhang, Liang Zhang, Zuobin Tang, Yao Yao, Bolong Huang, Shaojun Guo
Summary: The researchers have developed a new strategy to incorporate single atom Cu sites into melem ring, resulting in Cu-1/CN catalyst with high selectivity, activity, and stability for selective hydrogenation of 4-nitrostyrene. The presence of hydroxymethyl from trimethylolmelamine is found to be beneficial for atomically dispersing Cu atoms in CN, contributing to the optimal chemical environment for efficient hydrogenation reaction. X-ray absorption fine structure tests indicate that the Cu atom of Cu-1/CN is dominated by quaternary coordination way in the melem ring of CN.
Article
Chemistry, Physical
Liangmin Ning, Mingtao Zhang, Shengyun Liao, Yuting Zhang, Dandan Jia, Yunfang Yan, Wen Gu, Xin Liu
Summary: This study presents a method for preparing bimetallic nanostructure catalysts and their application in selective hydrogenation reactions. These catalysts exhibit excellent catalytic activity, enhanced selectivity, and improved stability in selective hydrogenation reactions, providing a new avenue for designing advanced catalysts.
Article
Chemistry, Multidisciplinary
Bruno C. Mascarenhas, Laudemir C. Varanda
Summary: This study demonstrates the synthesis of Ag nanoparticles supported on reduced graphene oxide as a nanocatalyst, which successfully promotes the catalytic hydrogenation of dyes. The research findings show that the adsorption of dyes on the catalyst was accelerated by the rGO support, and the catalyst maintained good integrity during successive catalytic cycles.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Physical
Marvin C. Schmidt, Carsten Schroeder, Philipp A. Haugg, Ann-Katrin Baumann, Jan Smyczek, Swetlana Schauermann
Summary: We conducted a mechanistic study on the interaction between allyl cyanide (AC) and Pd(111), and observed the formation of different types of self-organized 2D layers at different temperatures. By using scanning tunneling microscopy and infrared reflection absorption spectroscopy, we obtained complementary information on the distribution and chemical structure of AC molecules in the self-organized 2D layers.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Chemistry, Multidisciplinary
Jie Ding, Fuhua Li, Jincheng Zhang, Haifeng Qi, Zhiming Wei, Chenliang Su, Hong Bin Yang, Yueming Zhai, Bin Liu
Summary: This study reports an atomic catalyst, Ir1P1/NPG, with asymmetric IrN2P1 sites, which exhibits excellent activity and selectivity in the hydrogenation reaction. The P site in Ir1P1/NPG binds nitrostyrene, while the neighboring Ir site activates H2 to reduce the nitro group, achieving chemoselective hydrogenation.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Iris Berg, Helen Eisenberg, Shahar Dery, Tehila Shahar, Albano Cossaro, Alberto Verdini, Luca Floreano, Tamar Stein, Elad Gross
Summary: This study investigates the correlation between adsorption geometry and nitro reduction affinity in nitroaromatics on Au surface. The results reveal that the parallel positioning of the nitro group and high surface proximity are essential descriptors for nitro reduction affinity.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2022)
Article
Multidisciplinary Sciences
Rui Sang, Yuya Hu, Rauf Razzaq, Guillaume Mollaert, Hanan Atia, Ursula Bentrup, Muhammad Sharif, Helfried Neumann, Henrik Junge, Ralf Jackstell, Bert U. W. Maes, Matthias Beller
Summary: Using CO2 as C1-feedstock for the chemical industry has attracted great attention. Here the authors develop a two-step cascade process to perform catalytic carbonylations of olefins, alkynes, and aryl halides using CO2 and H-2.
NATURE COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Yang Song, Chaoquan Hu, Chang Li, Xuebing Xu
Summary: The butane dehydrogenation at different butane coverages on the Pt(111) surface was investigated using density functional theory (DFT) calculations. It was found that the coverage has a strong influence on the reaction activity but no obvious effect on the reaction pathway. Deeper dehydrogenation and primary occurrence of C-C bond cleavage were observed at lower coverage.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Robert Bavisotto, Sree Pradipta Roy, Nicholas Hopper, Wilfred T. Tysoe
Summary: We investigated the influence of hydrogen pressure on the selectivity of furfural hydrogenation on palladium. Our findings show that at low hydrogen pressures, decarbonylation products are formed, while at higher pressures, 2-methyl furan is produced. This change in selectivity is attributed to the effect of co-adsorbed hydrogen on the orientation of furfural adsorbed on the surface. The results obtained from studying the hydrogenation of furfural on a Pd(111) single crystal support this postulate.
JOURNAL OF CATALYSIS
(2023)
Article
Chemistry, Physical
David L. Molina, Mark Muir, Mohammed K. Abdel-Rahman, Michael Trenary
Summary: The study investigated the selective hydrogenation of acetylene on both a clean Ag(111) surface and on a Pd/Ag(111) single-atom-alloy surface using RAIRS and TPR techniques. By exposing the surfaces to atomic hydrogen generated by a hot filament, hydrogen atoms were found to react with acetylene to produce adsorbed ethylene at 85 K. The formation of ethylene and ethane was detected, but no acetylene coupling products, such as benzene, were found.
JOURNAL OF CHEMICAL PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Jianbo Zhao, Xiaomeng Li, Meng Zhang, Zhuo Xu, Xiaomei Qin, Yingfan Liu, Lifeng Han, Gao Li
Summary: In this study, a hollow mesoporous Co-N-C@mSiO(2) nanostructure derived from ZIF-67 was designed via the encapsulation-pyrolysis strategy. The Co-N-C@mSiO(2) catalyst exhibited excellent catalytic performance in the furfural hydrogenation towards furfuryl alcohol with good stability, and it was much better than other reported transition metal catalysts. This work provides a novel and facile strategy for preparing highly efficient non-precious metal catalysts to replace Cr-based and noble metal catalysts for furfural hydrogenation.
Article
Nanoscience & Nanotechnology
Fan Yang, Hongbo Yu, Chunzheng Wu, Shiwei Wang, Tong Li, Hongfeng Yin
Summary: Supported Rh nanoparticles (NPs) have excellent activity for the hydrogenation of halonitrobenzenes (HNBs), but their selectivity and recycling stability are not satisfactory. In this study, a yolk-shell-structured catalyst consisting of RhCu alloy cores and hollow/microporous carbon shells (HCS) was designed to overcome these problems. The obtained RhCu@HCS catalyst showed good activity, selectivity, and stability in the hydrogenation of p-chloronitrobenzene to produce p-chloroaniline. This research provides a general strategy to design highly efficient and stable hydrogenation catalysts.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Biplab Rajbanshi, Wenqiang Yang, Adam Yonge, Subrata Kumar Kundu, Charles Fricke, Andreas Heyden
Summary: Cu-based alloy catalysts have been experimentally investigated for the hydrodeoxygenation of biomass-derived organic acids. Through mean-field microkinetic modeling, it was found that the rate-controlling elementary step of propanoic acid conversion on Cu(111) varies depending on the reaction environment and hydrogen partial pressure. At low pressures, decarboxylation is dominant, while at high pressures, hydrogenation at the carbonyl carbon becomes the rate-controlling step.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Physical
Minghui Zhang, Xiao Wang, Xiwei Qi, Hongxia Guo, Li Liu, Qiao Zhao, Wenquan Cui
Summary: CuO/Ag/UiO-66 catalysts exhibit high selectivity towards HCOOH in photocatalytic CO2 reduction. The formation of a Z-scheme heterojunction between CuO and UiO-66, with Ag as a bridge, promotes charge transfer and separation, leading to the high selectivity. Experimental and theoretical results confirm that CuO is responsible for the activation of CO2, while Ag possesses strong adsorption capacity for *H protons, facilitating the generation of HCOOH.
JOURNAL OF CATALYSIS
(2022)
Article
Chemistry, Physical
Hung-Chi Wu, Tse-Ching Chen, Jia-Huang Wu, Chih-Wen Pao, Ching-Shiun Chen
Summary: The presence of Na additives can influence the selectivity of CO formation on Ni/SiO2 catalysts, with hydrogen carbonate species proposed as key intermediates.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Carlos Sanchez-Sanchez, Noe Orozco, Juan P. Holgado, Simon K. Beaumont, Georgios Kyriakou, David J. Watson, Agustin R. Gonzalez-Elipe, Leticia Feria, Javier Fernandez Sanz, Richard M. Lambert
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2015)
Article
Chemistry, Multidisciplinary
Mark Turner, Owain P. H. Vaughan, Georgios Kyriakou, David J. Watson, Lukas J. Scherer, Greg J. E. Davidson, Jeremy K. M. Sanders, Richard M. Lambert
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2009)
Article
Chemistry, Multidisciplinary
David J. Watson, R. J. Bennie Ram John Jesudason, Simon K. Beaumont, Georgios Kyriakou, Jonathan W. Burton, Richard M. Lambert
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2009)
Article
Chemistry, Multidisciplinary
Mark Turner, Owain P. H. Vaughan, Georgios Kyriakou, David J. Watson, Lukas J. Scherer, Anthoula C. Papageorgiou, Jeremy K. M. Sanders, Richard M. Lambert
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2009)
Article
Chemistry, Multidisciplinary
Vijay K. Kanuru, Georgios Kyriakou, Simon K. Beaumont, Anthoula C. Papageorgiou, David J. Watson, Richard M. Lambert
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2010)
Article
Chemistry, Physical
David J. Watson, Sushma Acharya, Richard E. J. Nicklin, Georg Held
Article
Chemistry, Analytical
F. J. Vidal-Iglesias, A. Al-Akl, D. Watson, G. A. Attard
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2007)
Article
Chemistry, Multidisciplinary
Alexander Orlov, David J. Watson, Federico J. Williams, Williams Mintcho Tikhov, Richard M. Lambert
Article
Chemistry, Multidisciplinary
Alexander I. McIntosh, David J. Watson, Richard M. Lambert
Letter
Chemistry, Physical
Georgios Kyriakou, David J. Davis, Robert B. Grant, David J. Watson, Anthony Keen, Mintcho S. Tikhov, Richard M. Lambert
JOURNAL OF PHYSICAL CHEMISTRY C
(2007)
Article
Electrochemistry
F. J. Vidal-Iglesias, A. Al-Akl, D. J. Watson, G. A. Attard
ELECTROCHEMISTRY COMMUNICATIONS
(2006)
Article
Chemistry, Multidisciplinary
Alexander I. McIntosh, David J. Watson, Jonathan W. Burton, Richard M. Lambert
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2006)
Article
Chemistry, Multidisciplinary
ME Chiu, G Kyriakou, FJ Williams, DJ Watson, MS Tikhov, RM Lambert
CHEMICAL COMMUNICATIONS
(2006)
Article
Chemistry, Multidisciplinary
May E. Chiu, David J. Watson, Georgios Kyriakou, Mintcho S. Tikhov, Richard M. Lambert
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2006)