Results 41 to 50 of about 21,930 (288)

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

Advanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li, Yunpeng Zuo, Xiaoran Zhang, Jieqiong Shan, Kenneth Mei Yee Leung, Bin Liu, Peter Strasser, Adrian Fisher, Zonglong Zhu, Xin Wang   +9 more
wiley   +1 more source

Nitrogen Radical Photocatalysed Reduction of Nitrous Oxide

Angewandte Chemie, EarlyView.
This work offers the first example of reduction of the potent greenhouse gas N2O to the benign products N2 and O(Bpin)2 using a nitrogen‐based catalyst. The active catalyst is shown to be a nitrogen‐based radical which operates under photocatalytic conditions.
Reece Lister‐Roberts, Agamemnon E. Crumpton, Meera Mehta   +2 more
wiley   +2 more sources

Hierarchical HZSM-5 for Catalytic Cracking of Oleic Acid to Biofuels

Nanomaterials, 2021
Solid acid catalyzed cracking of waste oil-derived fatty acids is an attractive route to hydrocarbon fuels. HZSM-5 is an effective acid catalyst for fatty acid cracking; however, its microporous nature is susceptible to rapid deactivation by coking.
Mahashanon Arumugam, Chee Keong Goh, Zulkarnain Zainal, Sugeng Triwahyono, Adam F. Lee, Karen Wilson, Yun Hin Taufiq-Yap   +6 more
doaj   +1 more source

Reductive Deoxygenation of Alcohols: Catalytic Methods Beyond Barton–McCombie Deoxygenation

, 2013
Deoxygenation is an extensively studied field in organic chemistry, and over the last decades many methods such as the Barton–McCombie deoxygenation reaction or deoxygenation with alkali metals in liquid ammonia have been established.
Herrmann, Josef M., Burkhard König, Josef M. Herrmann, König, Burkhard   +3 more
core   +1 more source

Tungsten-Based Catalysts for Selective Deoxygenation [PDF]

, 2013
On the tip of the tung(sten): The title catalysts selectively perform deoxygenation of vegetable‐oil‐based feeds by either decarboxylation/decarbonylation or hydrodeoxygenation (HDO) pathways, depending on the dominant tungsten phase (WO3 and W2C).
Inorganic Chemistry and Catalysis, Sub Inorganic Chemistry and Catalysis, Daniel R. Stellwagen, Johannes H. Bitter, Robert W. Gosselink, Bitter, J.H., Stellwagen, D.R., Gosselink, R.W.   +7 more
core   +1 more source

Spatially Configurable Conformal Sensor Integration on an Ultra‐Fine Metallic Needle for Minimally Invasive Deep‐Tissue Oxygen Monitoring

Advanced Materials Technologies, EarlyView.
A multi‐point oxygen‐sensing ultra‐fine needle (MO‐UFN) is developed by conformally integrating a lithographically patterned flexible electrochemical sensor array onto a clinical acupuncture needle. The platform preserves an approximately 0.3 mm diameter while enabling spatially resolved oxygen profiling along the insertion pathway.
Yeju Seo, Jaeho Park, Yongrok Jeong, Ji‐Hwan Ha, Junseong Ahn, Jimin Gu, Su A Park, Ilwoo Jun, Kichul Lee, Inkyu Park   +9 more
wiley   +1 more source

Challenges and Opportunities in the Integrated Economic and Oceanographic Analysis of Deoxygenation Impacts on Marine Fisheries and Ecosystems

Journal of Marine Science and Engineering
We argue that a multidisciplinary approach is essential to identify deoxygenation impacts on marine ecosystems and fisheries, bridging across the traditionally separate fields of oceanography and economics.
Hongsik Kim, U. Rashid Sumaila
doaj   +1 more source

Construction and performance optimization of PVDF deoxygenation membranes via Bi/C–TiO2 photocatalytic synergy [PDF]

AIP Advances
Metal corrosion induced by dissolved oxygen necessitates cost-effective and efficient deoxygenation technologies. Membrane-based deoxygenation has become the mainstream approach owing to its simplicity, low energy consumption, and environmental ...
Zhihui Lin, Chentao Li, Yufei Liu, Di Cai, Peng Yang, Hailin Liu   +5 more
doaj   +1 more source

Radical Deoxygenation of Hydroxyl Groups via Phosphites

, 2016
A highly efficient, two-step sequence method for the deoxygenation of hydroxyl groups has been developed. The method involves the preparation of the 2-(2-iodophenyl)ethyl methyl phosphite derivative of an alcohol using methyl dichlorophosphite and 2-(2 ...
Liming Zhang (213971), Masato Koreeda (2704789)   +1 more
core   +2 more sources

Adaptive Cu Reconstruction in Heterostructure Drives High‐Rate Nitrate‐to‐Ammonia Conversion

Advanced Science, EarlyView.
An adaptively reconstructed Cu/CoOX heterojunction, featuring a surface‐localized, hydroxyl‐rich oxidized Cu species, forms in situ from a CuO/CoOX (Co1Cu9OX) pre‐catalyst during electrochemical nitrate reduction. The self‐adaptive reconstruction and the incorporation of heterostructure regulate nitrogen‐containing intermediate adsorption and *H supply,
Chunyu Yuan, Saikat Bolar, Yongzheng Zhang, Akitaka Ito, Tatsuhiko Ohto, Takeshi Fujita   +5 more
wiley   +1 more source