Results 41 to 50 of about 2,422 (117)

(Ru-)Mo2C (MXene) catalysts for ammonia synthesis: From Haber-Bosch to chemical looping processes

Materials Today Catalysis
This study investigated (Ru-)Mo2C (MXene) materials for ammonia thermo-catalytic synthesis under atmospheric or moderate pressure. Under a H2-N2 (3:1) flow, the Mo2C MXene phase showed limited activity in ammonia synthesis at atmospheric pressure at 400 °
Charlotte Croisé, Xavier Courtois, Stéphane Célérier, Lola Loupias, Christine Canaff, Julie Rousseau, Nicolas Bion, Fabien Can   +7 more
doaj   +1 more source

Intermetallic Compounds from Non-Noble Metals as Catalysts in the Electrochemical Reactions of Ammonia Synthesis

Chemistry Proceedings
Intermetallic compounds (IMCs) can be used to create catalysts with unsurpassed practical characteristics, including for demanding and stable electrochemical reactions such as nitrogen reduction (NRR), nitrate reduction (NO3RR), and nitrite reduction ...
Irina Kuznetsova, Dmitry Kultin, Olga Lebedeva, Sergey Nesterenko, Sergey Fyodorovich Dunaev, Leonid Kustov   +5 more
doaj   +1 more source

Global change pattern of sedimentary nitrogen isotope during the Anthropocene epoch

Communications Earth & Environment
Nitrogen (N) cycling has been reshaped during the Anthropocene epoch, yet the global change pattern of sedimentary N stable isotope (δ15N) remains unclear.
Xin Li, Meng Lu, Jintai Wu, Liding Chen, Zhiming Zhang, Xun Wang, Jianjun Zhou, Kai Jensen, Xiaonan Zhang, Xiaolin Dou   +9 more
doaj   +1 more source

Recent research trends in the rational design strategies of carbon-based electrocatalysts for electrochemical ammonia synthesis

Carbon Trends
Ammonia electrosynthesis is the most sustainable way to produce carbon-free hydrogen carriers, which would pave the way for the foreseen hydrogen economy and carbon neutralization as it has the potential to replace the conventional Haber-Bosch process ...
Hyojung Lim, Jinuk Choi, Euihyeon Hwang, Sathyanarayanan Shanmugapriya, Gnanaprakasam Janani, Subramani Surendran, Heechae Choi, Gibum Kwon, Kyoungsuk Jin, Uk Sim   +9 more
doaj   +1 more source

Ammonia Synthesis Over an Iron Catalyst with an Inverse Structure

Advanced Science
Achieving a substantial increase in the ammonia productivity of the Haber‐Bosch (HB) process at low temperatures has been a significant challenge for over 100 years.
Masashi Hattori, Kento Miyashita, Yuki Nagasawa, Ryo Suzuki, Michikazu Hara   +4 more
doaj   +1 more source

Economic Estimation of a Green Ammonia Production System from Off Gas

Chemical Engineering Transactions
Most renewable ammonia plants developing from the conventional Haber-Bosch Process employ water electrolysis for hydrogen production and air separation for nitrogen production powered by renewables.
Ruitao Sun, Jie Li, Li Sun
doaj  

Techno-economic and life cycle greenhouse gas assessment of green ammonia produced by low-pressure Haber-Bosch process

Energy Nexus
Green ammonia can be used as an energy storage carrier and a sustainable chemical. To improve the competitiveness of green ammonia, two power-to-ammonia (PtA) processes integrated with low-pressure (LP) and ultra-low-pressure (ULP) Haber-Bosch (HB ...
Guohui Song, Yumeng Chen, Yingfeng He, Qize Jia, Qingjiao Wu, Xiaobo Cui, Hao Zhao   +6 more
doaj   +1 more source

From defects to catalysis: mechanism and optimization of NO electroreduction synthesis of NH3

Frontiers in Chemistry
Ammonia (NH₃) is a crucial industrial raw material, but the traditional Haber-Bosch process is energy-intensive and highly polluting. Electrochemical methods for synthesizing ammonia using nitric oxide (NO) as a precursor offer the advantages of ...
Gan Linling, Zhen Liao, Huimei Zhang, Jinxia Jiang, Zhikai Chen   +4 more
doaj   +1 more source

Operating envelope of Haber-Bosch process design for power-to-ammonia. [PDF]

RSC Adv, 2018
Cheema II, Krewer U.
europepmc   +1 more source

Glutamate production from aerial nitrogen using the nitrogen-fixing bacterium Klebsiella oxytoca

Communications Biology
Glutamate is an essential biological compound produced for various therapeutic and nutritional applications. The current glutamate production process requires a large amount of ammonium, which is generated through the energy-consuming and CO2-emitting ...
Daisuke Yoshidome, Makoto Hidaka, Toka Miyanaga, Yusuke Ito, Saori Kosono, Makoto Nishiyama   +5 more
doaj   +1 more source