Results 51 to 60 of about 152,056 (258)

Preparation and characterization of Mg-modified zirconias as catalysts for the direct synthesis of dimethyl carbonate (DMC)

Revista Facultad de Ingeniería Universidad de Antioquia, 2011
Se preparó circonia por el método sol-gel usando H2SO4, HNO3 o HCl como catalizadores de hidrólisis. Los materiales resultantes se caracterizaron por DRX, BET, FTIR, desorción de CO2 con temperatura programada (TPDCO 2) y desorción de amoníaco con ...
Andrés Orrego Romero, Consuelo Montes de Correa, Felipe Bustamante Lodoño   +2 more
doaj  

Nature of ammonia storage sites in H-SSZ-13 and Cu-SSZ-13 [PDF]

RSC Advances
In this study, the nature of ammonia storage sites in H-SSZ-13 and Cu-SSZ-13 with different Si/Al and Cu/Al molar ratios is characterized by NH3 sorption experiments using in situ DRIFT spectroscopy, and by NH3-TPD flow reactor experiments.
Ghodsieh Isapour, Yingxin Feng, Henrik Grönbeck, Magnus Skoglundh, Hanna Härelind   +4 more
doaj   +1 more source

Gasotransmitter ammonia accelerates seed germination, seedling growth, and thermotolerance acquirement in maize

Plant Signaling & Behavior, 2023
Ammonia (NH3), as an intermediate product of nitrogen metabolism, is recognized as a novel gasotransmitter (namely gaseous signaling molecule), its signaling role being revealed in plants. NH3 exists in two different chemical forms, namely the weak base (
Zhong-Guang Li, Xiao-Qiong Lu, Ji Chen
doaj   +1 more source

A Review on Combustion Characteristics of Ammonia as a Carbon-Free Fuel

Frontiers in Energy Research, 2021
A comprehensive review of combustion characteristics of ammonia (NH3) as a carbon free fuel is presented. NH3 is an attractive alternative fuel candidate to reduce the consumption of fossil fuel and the emission of CO2, soot, and hydrocarbon pollutants ...
Jun Li, Jun Li, Jun Li, Jun Li, Shini Lai, Shini Lai, Danan Chen, Danan Chen, Rongjun Wu, Noriyuki Kobayashi, Lisheng Deng, Lisheng Deng, Lisheng Deng, Hongyu Huang, Hongyu Huang, Hongyu Huang, Hongyu Huang   +16 more
doaj   +1 more source

Functionalizing Micro‐to‐Mesoscopic Electrode Architectures for Regulating Electron Transfer Behaviors in Electrocatalysis

Advanced Functional Materials, EarlyView.
A systematic review is conducted to assess the influence of electrode architecture across micro‐ to mesoscopic length scales on electron‐transfer pathways in electrocatalysis. We discuss the structure‐activity relationships in electrocatalytic applications, including resource recovery and environmental remediation, and provide cost‐effective, efficient
Manshu Zhao, Jiaojiao Zhang, Shideng Yuan, Xinmeng Yu, Keming Wan, Xiaoguang Duan, Zhining Wang   +6 more
wiley   +1 more source

Exposure to the environmental pollutant ammonia causes changes in gut microbiota and inflammatory markers in fattening pigs

Ecotoxicology and Environmental Safety, 2021
Ammonia (NH3) is a major pollutant in livestock houses and atmospheric environment. It has been demonstrated that NH3 can cause a series of damage to animals and human.
Yutao Li, Runxiang Zhang, Xiang Li, Jianhong Li, Wenbo Ji, Xiangyin Zeng, Jun Bao   +6 more
doaj   +1 more source

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

Nitride MXenes Beyond Carbides: Bridging the Gap Between Computational Prediction and Experimental Realization

Advanced Functional Materials, EarlyView.
Nitride MXenes remain constrained by a persistent gap between computational prediction and experimental realization. This Review identifies the thermodynamic, kinetic, and chemical barriers limiting their synthesis, critically evaluates emerging fabrication routes, and proposes a multidimensional computational‐experimental framework to accelerate the ...
Naresh Varnakavi, Masoud Soroush
wiley   +1 more source

Estimation of UNIQUAC-NRF Model Parameters for NH3-CO2-H2O System [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2005
Vapor-liquid equilibrium in NH3-CO2-H2O system at high pressures has been studied. The UNIQUAC-NRF model for this system was extended by using the Goppert 4 maurer reported datas.
Hassan Pahlevanzadeh, Amir Mohseni Ahooei   +1 more
doaj  

Lewis Acid Site Engineering in MOF‐Derived Aluminum Oxide/Carbon Composites for Dechlorination of Waste Plastic Pyrolysis Oil

Advanced Functional Materials, EarlyView.
Controlled carbonization of an Al‐MOF partially decomposes its linkers, exposing coordinatively unsaturated Al centers within an oxide/carbon composite. The resulting Lewis acid sites, rather than surface area, govern organochlorine capture: the composite removes chemically diverse organochlorines from waste plastic pyrolysis oil, outperforms a ...
Seong Cheon Kim, Byeongju Jeon, Suk Hyun Lim, Eun Hee Kwon, Nam Sun Nho, Siyoung Q. Choi, Jeasung Park   +6 more
wiley   +1 more source