Results 11 to 20 of about 482,318 (212)

Benthic Dinitrogen Fixation Traversing the Oxygen Minimum Zone Off Mauritania (NW Africa)

Frontiers in Marine Science, 2017
Despite its potential to provide new nitrogen (N) to the environment, knowledge on benthic dinitrogen (N2) fixation remains relatively sparse, and its contribution to the marine N budget is regarded as minor.
Jessica Gier, Carolin R. Löscher, Andrew W. Dale, Stefan Sommer, Ulrike Lomnitz, Tina Treude, Tina Treude   +6 more
doaj   +2 more sources

Catalytic and stoichiometric stepwise conversion of side-on bound dinitrogen to ammonia mediated by a uranium complex. [PDF]

Nat Chem
The well-defined catalytic conversion of dinitrogen (N2) to ammonia (NH3) by molecular complexes is of fundamental interest and important for providing an atomic-level understanding of reactivity that can be related to industrial and biological nitrogen ...
Batov MS, Partlow HT, Chatelain L, Seed JA, Scopelliti R, Zivkovic I, Adams RW, Liddle ST, Mazzanti M.   +8 more
europepmc   +2 more sources

Genetic algorithm-based re-optimization of the Schrock catalyst for dinitrogen fixation [PDF]

PeerJ Physical Chemistry, 2023
This study leverages a graph-based genetic algorithm (GB-GA) for the design of efficient nitrogen-fixing catalysts as alternatives to the Schrock catalyst, with the aim to improve the energetics of key reaction steps. Despite the abundance of nitrogen in
Magnus Strandgaard, Julius Seumer, Bardi Benediktsson, Arghya Bhowmik, Tejs Vegge, Jan H. Jensen   +5 more
doaj   +2 more sources

Hydrides mediate nitrogen fixation

Cell Reports Physical Science, 2022
Summary: The fixation of atmospheric dinitrogen to ammonia is crucial for the sustainable growth of human society. The reduction of N2 to NH3 needs the inputs of electrons and hydrogens, which could be supplied by hydridic hydrogens. Hydrides are thus at
Qianru Wang, Yeqin Guan, Jianping Guo, Ping Chen   +3 more
doaj   +1 more source

Transition-Metal-Free Barium Hydride Mediates Dinitrogen Fixation and Ammonia Synthesis.

Angewandte Chemie, 2022
Transition-metal-mediated dinitrogen fixation has been intensively investigated. The employment of main group elements for this vital reaction recently aroused increasing interest because of new dinitrogen reaction chemistry.
Yeqin Guan, Chuangwei Liu, Qianru Wang, Wenbo Gao, H. Hansen, Jianping Guo, T. Vegge, Ping Chen   +7 more
semanticscholar   +1 more source

The Angola Gyre is a hotspot of dinitrogen fixation in the South Atlantic Ocean

Communications Earth & Environment, 2022
Biological dinitrogen fixation is the major source of new nitrogen to marine systems and thus essential to the ocean’s biological pump. Constraining the distribution and global rate of dinitrogen fixation has proven challenging owing largely to ...
T. Marshall, J. Granger, K. Casciotti, K. Dähnke, K. Emeis, D. Marconi, M. McIlvin, A. Noble, M. Saito, D. Sigman, S. Fawcett   +10 more
semanticscholar   +1 more source

Direct synthesis of cyanate anion from dinitrogen catalysed by molybdenum complexes bearing pincer-type ligand

Nature Communications, 2022
Direct conversion of dinitrogen to organonitrogen compounds is a challenging goal in nitrogen fixation chemistry. Here, the authors report the catalytic formation of cyanate anion from dinitrogen under ambient conditions using a molybdenum complex.
Takayuki Itabashi, Kazuya Arashiba, Akihito Egi, Hiromasa Tanaka, Keita Sugiyama, Shun Suginome, Shogo Kuriyama, Kazunari Yoshizawa, Yoshiaki Nishibayashi   +8 more
doaj   +1 more source

Localized osmotic stress activates systemic responses to N limitation in Medicago truncatula–Sinorhizobium symbiotic plants

Frontiers in Plant Science, 2023
In mature symbiotic root nodules, differentiated rhizobia fix atmospheric dinitrogen and provide ammonium to fulfill the plant nitrogen (N) demand. The plant enables this process by providing photosynthates to the nodules.
Marie-Laure Martin, Marie-Laure Martin, Marie-Laure Martin, Marjorie Pervent, Marjorie Pervent, Ilana Lambert, Stefano Colella, Stefano Colella, Mathilde Tancelin, Dany Severac, Gilles Clément, Pascal Tillard, Florian Frugier, Florian Frugier, Marc Lepetit, Marc Lepetit   +15 more
doaj   +1 more source

Catalytic nitrogen fixation using visible light energy

Nature Communications, 2022
The development of a nitrogen fixation process that relies on the renewable energy, such as visible light, is an important goal in sustainable chemistry. Here, authors establish an iridium and molybdenum-catalysed ammonia formation from dinitrogen driven
Yuya Ashida, Yuto Onozuka, Kazuya Arashiba, Asuka Konomi, Hiromasa Tanaka, Shogo Kuriyama, Yasuomi Yamazaki, Kazunari Yoshizawa, Yoshiaki Nishibayashi   +8 more
doaj   +1 more source

Photocatalytic Dinitrogen Fixation with Water on Bismuth Oxychloride in Chloride Solutions for Solar-to-Chemical Energy Conversion.

Journal of the American Chemical Society, 2020
Ammonia is an indispensable chemical. Photocatalytic NH3 production via dinitrogen fixation using water by sunlight illumination under ambient conditions is a promising strategy, although previously reported catalysts show insufficient activity.
Yasuhiro Shiraishi, M. Hashimoto, Kiyomichi Chishiro, K. Moriyama, Shunsuke Tanaka, T. Hirai   +5 more
semanticscholar   +1 more source