Synthesis of a highly stable Pt/ CeO 2 / Al 2 O 3 catalyst for gasoline engine emission control by adjusting pt distribution

2021 ◽  
Author(s):  
Li Lan ◽  
Junhuai Xiang ◽  
Long Huang ◽  
Xin Huang ◽  
Weiqi Zhou ◽  
...  
Keyword(s):  
Gasoline Engine ◽  
Emission Control ◽  
Engine Emission

scholarly journals Synthesis of an advanced Pd-Rh bimetallic catalyst for gasoline engine emission control

2021 ◽  
pp. 103587
Author(s):  
Li Lan ◽  
Shanhu Chen ◽  
Suning Wang ◽  
Junhuai Xiang ◽  
Long Huang ◽  
...  
Keyword(s):  
Gasoline Engine ◽  
Bimetallic Catalyst ◽  
Emission Control ◽  
Engine Emission

scholarly journals Primary and secondary organic aerosols in 2016 summer of Beijing

2017 ◽  
Author(s):  
Rongzhi Tang ◽  
Zepeng Wu ◽  
Xiao Li ◽  
Yujue Wang ◽  
Dongjie Shang ◽  
...  
Keyword(s):  
Gasoline Engine ◽  
Control Measures ◽  
High Mass ◽  
Urban Site ◽  
Back Trajectory ◽  
Air Pollution Control ◽  
Secondary Sources ◽  
Peking University ◽  
Catalyzed Reactions ◽  
Engine Emission

Abstract. To improve the air quality, Beijing government has employed several air pollution control measures since 2008 Olympics. In order to investigate the organic aerosol sources after the implementation of these measures, ambient fine particulate matters were collected at a regional site Changping (CP) and an urban site Peking University Atmosphere Environment MonitoRing Station (PKUERS) during the Photochemical Smog in China field Campaign in summer of 2016. A chemical mass balance (CMB) modeling and the tracer yield method were used to apportion the primary and secondary organic sources. Our results showed that the particle concentration decreased significantly during the last a few years. The apportioned primary and secondary sources explained 62.8 ± 18.3 % and 80.9 ± 27.2 % of the measured OC at CP and PKUERS, respectively. Vehicular emissions served as the dominant sources. Except gasoline engine emission, the contributions of all the other primary sources decreased. Besides, the anthropogenic SOC, i.e. toluene SOC, also decreased, implying that deducting primary emission can reduce anthropogenic SOA. Different from the SOA from other regions in the world, where biogenic SOA was dominant, anthropogenic SOA was the major contributor to SOA, implying that deducting anthropogenic VOCs emissions is an efficient way to reduce SOA in Beijing. Back trajectory cluster analysis results showed that high mass concentrations of OC were observed when the air mass was from south. However, the contributions of different primary organic sources were similar, suggesting the regional particle pollution. The ozone concentration and temperature correlated well with the SOA concentration. Different correlations between day and night samples suggested the different SOA formation pathways. Significant enhancement of SOA with increasing particle water content and acidity were observed in our study, suggesting the aqueous phase acid-catalyzed reactions may be the important SOA formation mechanism in summer of Beijing.

scholarly journals Multi-Functional Reactor for Advanced Diesel Engine Emission Control

2012 ◽  
Vol 48 ◽  
pp. 3681-3690
Author(s):  
Dimitrios Zarvalis ◽  
Souzana Lorentzou ◽  
Athanasios G. Konstandopoulos
Keyword(s):  
Diesel Engine ◽  
Emission Control ◽  
Engine Emission ◽  
Diesel Engine Emission

Evaluation of Fuel-Borne Sodium Effects on a DOC-DPF-SCR Heavy-Duty Engine Emission Control System: Simulation of Full-Useful Life

2016 ◽  
Vol 9 (3) ◽  
pp. 683-694 ◽  
Author(s):  
Michael Lance ◽  
Andrew Wereszczak ◽  
Todd J. Toops ◽  
Richard Ancimer ◽  
Hongmei An ◽  
...  
Keyword(s):  
Control System ◽  
System Simulation ◽  
Emission Control ◽  
Heavy Duty ◽  
Useful Life ◽  
Emission Control System ◽  
Engine Emission

Low Temperature NO Storage of Zeolite Supported Pd for Low Temperature Diesel Engine Emission Control

2016 ◽  
Vol 146 (9) ◽  
pp. 1706-1711 ◽  
Author(s):  
Hai-Ying Chen ◽  
Jillian E. Collier ◽  
Dongxia Liu ◽  
Loredana Mantarosie ◽  
Desirée Durán-Martín ◽  
...  
Keyword(s):  
Diesel Engine ◽  
Low Temperature ◽  
Emission Control ◽  
Engine Emission ◽  
Diesel Engine Emission ◽  
Supported Pd
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