Results 21 to 30 of about 2,564 (186)

The Simulation and Control of Ammonia Unit of Shiraz Petrochemical Complex, Iran [PDF]

Journal of Chemical and Petroleum Engineering, 2018
The aim of this paper is the steady state and dynamic simulations of the ammonia unit of Shiraz petrochemical complex and system behavior study versus the feed flow rate change for producing a good quality product.
Fereshte Tavakoli Dastjerd, Jafar Sadeghi   +1 more
doaj   +3 more sources

Splicing the active phases of copper/cobalt-based catalysts achieves high-rate tandem electroreduction of nitrate to ammonia

Nature Communications, 2022
Electrocatalytic recycling of waste nitrate to NH3 under ambient conditions maybe an appealing alternative to the Haber−Bosch process. Here the authors report a tandem catalyst system involving cooperative adsorption of reaction intermediate on different
Wenhui He, Jian Zhang, Stefan Dieckhöfer, Swapnil Varhade, Ann Cathrin Brix, Anna Lielpetere, Sabine Seisel, João R. C. Junqueira, Wolfgang Schuhmann   +8 more
doaj   +1 more source

Recent advances and intensifications in Haber-Bosch ammonia synthesis process

Chemical Engineering and Processing: Process Intensification
Matthew Watson, Luqmanulhakim Baharudin, Navid Erfani   +2 more
exaly   +2 more sources

Salting-out effect promoting highly efficient ambient ammonia synthesis

Nature Communications, 2021
The electroreduction of nitrogen to ammonia offers a promising alternative to the Haber–Bosch process but suffers from low activity and selectivity. Here, authors demonstrate that triggering a salting-out effect in a highly concentrated electrolyte can ...
Mengfan Wang, Sisi Liu, Haoqing Ji, Tingzhou Yang, Tao Qian, Chenglin Yan   +5 more
doaj   +1 more source

A Route to Renewable Energy Triggered by the Haber-Bosch Process [PDF]

Chem, 2019
Using renewable energy to facilitate the Haber-Bosch process is of significant importance. In this issue of Chem, Wang et al. report an ingenious approach for the design of an electrode-solution-reactant interface for efficient, light-assisted N2 reduction in aqueous solution.
Meyer, Thomas J., Wang, Ying
openaire   +1 more source

Looking for Options to Sustainably Fixate Nitrogen. Are Molecular Metal Oxides Catalysts a Viable Avenue?

Frontiers in Chemistry, 2021
Fast and reliable industrial production of ammonia (NH3) is fundamentally sustaining modern society. Since the early 20th Century, NH3 has been synthesized via the Haber–Bosch process, running at conditions of around 350–500°C and 100–200 times ...
Rebeca González-Cabaleiro, Jake A. Thompson, Laia Vilà-Nadal   +2 more
doaj   +1 more source

Solid solution for catalytic ammonia synthesis from nitrogen and hydrogen gases at 50 °C

Nature Communications, 2020
Ammonia synthesis via the Haber–Bosch process typically takes place at an elevated temperature in order to achieve a reasonable rate. Here the authors report on a CaFH solid solution with low activation energy for catalytic ammonia synthesis at lower ...
Masashi Hattori, Shinya Iijima, Takuya Nakao, Hideo Hosono, Michikazu Hara   +4 more
doaj   +1 more source

Carbon‐Confined Fe3C/Fe3N Janus Interfaces for Selective Nitric Oxide‐to‐Ammonia Electroreduction

Angewandte Chemie, EarlyView.
A defect‐rich, graphitic‐carbon‐confined Fe3C/Fe3N Janus catalyst integrates NO transport, adsorption/activation, and interfacial H supply for efficient nitric oxide electroreduction to ammonia. Built from earth‐abundant elements, this architecture enables high‐yield and high‐efficiency NH3 synthesis while valorizing industrial NO emissions.
Jialing Song, Ziqi Wei, Haotian Huang, Lupeng Han, Biyi Huang, Evangelina Pensa, Sam Fong Yau Li, Eslam Hamed, Fun Man Fung, Emiliano Cortés, Dengsong Zhang   +10 more
wiley   +2 more sources

Direct Solar Power‐Driven Durable Ammonia Electrosynthesis From Nitrate Under Fluctuating Voltage Conditions

Angewandte Chemie, EarlyView.
Isolated Sn sites on Cu(111) induce a highly asymmetric charge distribution, which promotes water dissociation, accelerates key intermediate hydrogenation, and suppresses competing hydrogen evolution. As a result, SnCu111 delivers NH3 Faradaic efficiencies above 90% over an 800 mV potential window and enables stable direct solar power‐driven NH3 ...
Xiaokang Wang, Jiankun Li, Liyun Wu, Sirui Tang, Chuangwei Liu, Jianping Yang, Qilong Wu, Xiangdong Yao, Jun Chen   +8 more
wiley   +2 more sources

Acceptor‐Doped Cerium Oxides Enabling Metallic Nanocatalyst Exsolution for Hydrogen Production From Ammonia

Angewandte Chemie, EarlyView.
Outstanding catalytic results for NH3 decomposition for H2 production were obtained with metallic Ru, Rh, and RuRh nanoparticle‐exsolved CeO2‐based catalysts. Significant lower amounts of available superficial metallic fractions were needed in comparison to conventional Ru‐impregnated materials.
Andrés López‐García, Elena Barrio‐Querol, Álvaro Represa, Jesús Ara, Ana B. Hungría, David Catalán‐Martínez, Alfonso J. Carrillo, Sonia Escolástico, José Manuel Serra   +8 more
wiley   +2 more sources