New insights into 3M3M1B: the role of water in ˙OH-initiated degradation and aerosol formation in the presence of NOX (X = 1, 2) and an alkali

2019 ◽  
Vol 21 (31) ◽  
pp. 17378-17392 ◽  
Author(s):  
Feng-Yang Bai ◽  
Shuang Ni ◽  
Yi-Zhen Tang ◽  
Xiu-Mei Pan ◽  
Zhen Zhao
Keyword(s):  
Aerosol Formation ◽  
Metal Free ◽  
Nitrate Aerosol

Metal-free catalysis of the ˙OH-initiated degradation of 3M3M1B, nitrate aerosol formation, and peroxynitrate decomposition.

The Role of Binary and Ion Nucleation of Sulfuric Acid and Water Vapor in the Dynamics of Sulfate Aerosol Formation in the Atmosphere

2021 ◽  
pp. 53-60
Author(s):  
A. E. Aloyan ◽  
◽  
A. N. Yermakov ◽  
V. O. Arutyunyan ◽  
◽  
...  
Keyword(s):  
Water Vapor ◽  
Sulfuric Acid ◽  
Three Dimensional ◽  
Ionization Rate ◽  
Sulfate Aerosol ◽  
Aerosol Formation ◽  
Three Dimensional Model ◽  
Aerosol Composition ◽  
Transport And Transformation

The results of one-dimensional calculations of the height profiles of nucleated sulfate aerosol particles for the northern mid-latitudes and tropics in winter are presented. Numerical calculations were performed using a three-dimensional model of the transport and transformation of multicompo- nent gas and aerosol substances in the atmosphere, incorporating photochemistry, nucleation involving neutral molecules and ions, as well as condensation/evaporation and coagulation. It is found that the resulting dynamics of the formation of aerosol particle nuclei is not a simple sum of ion and binary (water vapor/sulfuric acid) nucleation rates. This dynamics is determined by the ratio of critical radii of nucleated particles due to binary and ion nucleation of these substances (rcr_bin and rcr_ion) depending on temperature, relative humidity, and ionization rate. This should be taken into account in modeling the gas and aerosol composition of the atmosphere and comparing calculated and observed data.

scholarly journals Role of Ammonia on the Feedback Between AWC and Inorganic Aerosol Formation During Heavy Pollution in the North China Plain

2019 ◽  
Vol 6 (9) ◽  
pp. 1675-1693 ◽  
Author(s):  
Baozhu Ge ◽  
Xiaobin Xu ◽  
Zhiqiang Ma ◽  
Xiaole Pan ◽  
Zhe Wang ◽  
...  
Keyword(s):  
North China Plain ◽  
North China ◽  
Aerosol Formation ◽  
The North ◽  
The North China Plain ◽  
Heavy Pollution ◽  
Inorganic Aerosol

scholarly journals Role of flexible bulky groups and weak interactions involving halogens in the vapoluminescence of a metal-free dye

RSC Advances ◽  
2016 ◽  
Vol 6 (78) ◽  
pp. 74506-74509 ◽  
Author(s):  
Y. Akune ◽  
R. Hirosawa ◽  
H. Takahashi ◽  
M. Shiro ◽  
S. Matsumoto
Keyword(s):  
Weak Interactions ◽  
Molecular Flexibility ◽  
Metal Free

The vapoluminescence of a 2,5-diamino-3,6-dicyanopyrazine dye was correlated with molecular flexibility of bulky substituents and weak interactions involving halogens.

scholarly journals Catalytic oxidative desulfurization of a 4,6-DMDBT containing model fuel by metal-free activated carbons: the key role of surface chemistry

2019 ◽  
Vol 21 (24) ◽  
pp. 6685-6698 ◽  
Author(s):  
Zoi Christina Kampouraki ◽  
Dimitrios A. Giannakoudakis ◽  
Konstantinos S. Triantafyllidis ◽  
Eleni A. Deliyanni
Keyword(s):  
Surface Chemistry ◽  
Activated Carbons ◽  
Oxidative Desulfurization ◽  
Ambient Conditions ◽  
Metal Free ◽  
Model Fuel ◽  
Catalytic Oxidative Desulfurization

Commercial micro/mesoporous activated carbons were utilized as metal-free catalysts for the desulfurization of a model fuel, i.e. 4,6-dimethyldibenzothiophene (4,6-DMDBT) in hexadecane, under ambient conditions. Oxidation of carbons led to a further catalytic improvement.

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