scholarly journals A Tuned Lewis Acidic Catalyst Guided by Hard-soft Acid-base Theory to Promote N2 Electroreduction

2021 ◽  
Author(s):  
Yongwen Ren ◽  
Chang Yu ◽  
Xuedan Song ◽  
Fengyi Zhou ◽  
Xinyi Tan ◽  
...  
Keyword(s):  
Reduction Reaction ◽  
Ambient Conditions ◽  
Renewable Electricity ◽  
Acid Base ◽  
Acidic Catalyst ◽  
Bosch Process ◽  
Base Theory ◽  
Soft Acid

Electrocatalytic N2 reduction reaction (NRR) to ammonia (NH3) driven by intermittent renewable electricity under ambient conditions offers an alternative to the energy-intensive Haber−Bosch process. However, as a distinct core of...

scholarly journals Communication—Partial Oxidation of MnS for Synergistic Electrocatalysis of N2-to-NH3 Fixation at Ambient Conditions

2021 ◽  
Author(s):  
Peiei Li ◽  
Dan Cheng ◽  
Xiaohua Zhu ◽  
Meiling Liu ◽  
Youyu Zhang
Keyword(s):  
Partial Oxidation ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Faradaic Efficiency ◽  
Bosch Process ◽  
Ambient Nh3 ◽  
Reaction Performance ◽  
Excellent Selectivity

Abstract Compared with the traditional Haber-Bosch process, electrochemical N2-to-NH3 reduction affords an eco-friendly and sustainable alternative to ambient NH3 synthesis with the aid of efficient electrocatalysts. In this work, partial oxidation of MnS to obtain the MnS-Mn3O4 is proved as a promising noble-free electrocatalysts of N2to NH3 fixation at ambient conditions. When tested in 0.1 M Na2SO4, the electrochemical N2 reduction reaction performance of MnS-Mn3O4 is improved comparing with the MnS, which achieves large NH3 yield of 16.74 μg h–1 mgcat.–1 and a high Faradaic efficiency of 5.72%. It also exhibits excellent selectivity of N2-to-NH3 and strong long-term electrochemical stabil

scholarly journals Transition Metal Oxynitrides Catalysts for Electrochemical Reduction of Nitrogen to Ammonia

2021 ◽  
Author(s):  
Damilola Ologunagba ◽  
Shyam Kattel
Keyword(s):  
Density Functional Theory ◽  
Transition Metal ◽  
Dft Calculations ◽  
Electrochemical Reduction ◽  
Density Functional ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Functional Theory ◽  
Nitrogen Reduction ◽  
Bosch Process

Electrochemical nitrogen reduction reaction (ENRR) at ambient conditions is beneficial compared to energy intensive thermochemical Haber-Bosch process for NH3 production. Here, periodic density functional theory (DFT) calculations are carried out...

An amorphous WC thin film enabled high-efficiency N2 reduction electrocatalysis at ambient conditions

2021 ◽  
Author(s):  
Shaoxiong Li ◽  
Yonglan Luo ◽  
Luchao Yue ◽  
Ting Shuai Li ◽  
Yan Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
High Efficiency ◽  
Aqueous Media ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Promising Alternative ◽  
Bosch Process

Ambient electrochemical N2 reduction offers a promising alternative for the energy-intensive Haber-Bosch process toward renewable NH3 synthesis in aqueous media but needs efficient electrocatalysts to enable the N2 reduction reaction...

Application of hard and soft acid base theory to uncover Lewis bases’ destructiveness to UiO-66 type metal organic frameworks in aqueous solutions

2021 ◽  
Author(s):  
Liangjie Wang ◽  
Juan Li ◽  
Luyao Cheng ◽  
Yonghui Song ◽  
Ping Zeng ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Aqueous Solutions ◽  
Metal Organic Frameworks ◽  
Acid Base ◽  
Lewis Bases ◽  
Base Theory ◽  
Metal Organic ◽  
The Stability ◽  
Soft Acid

Lewis bases (L-bases) in wastewater, such as F- and PO43-, are destructive to the stability of MOFs which have attracted increasing attentions in wastewater treatment field as adsorbents and catalysts....

scholarly journals Ambient nitrogen reduction cycle using a hybrid inorganic–biological system

2017 ◽  
Vol 114 (25) ◽  
pp. 6450-6455 ◽  
Author(s):  
Chong Liu ◽  
Kelsey K. Sakimoto ◽  
Brendan C. Colón ◽  
Pamela A. Silver ◽  
Daniel G. Nocera
Keyword(s):  
Hydrogen Generation ◽  
Reduction Reaction ◽  
Ambient Conditions ◽  
Renewable Electricity ◽  
Turnover Number ◽  
Chemical Reagents ◽  
Reduction Cycle ◽  
Reaction Proceeds ◽  
Solid Biomass ◽  
Production Of Ammonia

We demonstrate the synthesis of NH3 from N2 and H2O at ambient conditions in a single reactor by coupling hydrogen generation from catalytic water splitting to a H2-oxidizing bacterium Xanthobacter autotrophicus, which performs N2 and CO2 reduction to solid biomass. Living cells of X. autotrophicus may be directly applied as a biofertilizer to improve growth of radishes, a model crop plant, by up to ∼1,440% in terms of storage root mass. The NH3 generated from nitrogenase (N2ase) in X. autotrophicus can be diverted from biomass formation to an extracellular ammonia production with the addition of a glutamate synthetase inhibitor. The N2 reduction reaction proceeds at a low driving force with a turnover number of 9 × 109 cell–1 and turnover frequency of 1.9 × 104 s–1⋅cell–1 without the use of sacrificial chemical reagents or carbon feedstocks other than CO2. This approach can be powered by renewable electricity, enabling the sustainable and selective production of ammonia and biofertilizers in a distributed manner.

Rational design of nanocatalysts for ambient ammonia electrosynthesis

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Limin Wu ◽  
Weiwei Guo ◽  
Xiaofu Sun ◽  
Buxing Han
Keyword(s):  
Rational Design ◽  
Research Area ◽  
Reduction Reaction ◽  
Single Atom ◽  
Future Research ◽  
Design Strategies ◽  
Ambient Conditions ◽  
Renewable Electricity ◽  
Huge Amount ◽  
Nano Structure

Abstract Ammonia (NH3) is one of the key commercial chemicals and carbon-free energy carriers. It is mainly made by Haber-Bosch process under high temperature and high pressure, which consumes huge amount of energy and releases large amounts of CO2. Developing sustainable approaches to its production is of great importance. Powered by a renewable electricity source, electrochemical N2 reduction reaction (NRR) and nitrate reduction reaction (NITRR) are potential routes to synthesize NH3 under ambient conditions. This review summarizes major recent advances in the NRR and NITRR, especially for several years. Some fundamentals for NRR and NITRR are first introduced. Afterward, the design strategies of nanocatalysts are discussed, mainly focusing on nano-structure construction/nanoconfinement, doping/defects engineering and single-atom engineering. Finally, the critical challenges remaining in this research area and promising directions for future research are discussed.

Sign in / Sign up

Export Citation Format

Share Document