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Emission Control Science and Technology OnlineFirst articles

11.09.2019

A Two-Stage Model for Sequential Engine-Out and Tailpipe Emission Estimation

This paper presents models for the estimation of vehicular NOx emissions of gasoline-powered vehicles and presents an analysis of the performance based on real driving data. The main contribution is a two-stage model for the sequential estimation …

Autoren:
Roland Schmid, Johannes Bürger, Jia Chen

07.09.2019 | Special Issue: 2018 CLEERS Workshop, September 18-20, Ann Arbor, Michigan, United States

Impact of Lubricant Oil Additives on the Performance of Pd-Based Three-Way Catalysts

As alternative lubricant anti-wear additives are sought to reduce friction and improve overall fuel economy, it is important that these additives are also compatible with current emissions control catalysts. In the present work, a …

Autoren:
Daekun Kim, Todd J. Toops, Ke Nguyen, D. William Brookshear, Michael J. Lance, Jun Qu

04.09.2019 | Special Issue: 2018 CLEERS Workshop, September 18-20, Ann Arbor, Michigan, United States

Palladium/Zeolite Low Temperature Passive NOx Adsorbers (PNA): Structure-Adsorption Property Relationships for Hydrothermally Aged PNA Materials

Zeolites with different framework structures (SSZ-13, ZSM-5, BEA) but similar Si/Al ratios (~ 12–15) and Pd loading (~ 1 wt%) were synthesized and evaluated as low-temperature passive NOx adsorbers (PNA). These materials exhibit high NOx …

Autoren:
Konstantin Khivantsev, Nicholas R. Jaegers, Libor Kovarik, Jian Zhi Hu, Feng Gao, Yong Wang, János Szanyi

24.08.2019 | Special Issue: In Recognition of Professor Wolfgang Grünert's Contributions to the Science and Fundamentals of Selective Catalytic Reduction of NOx

CuO/Zn-CeO2 Nanocomposite as an Efficient Catalyst for Enhanced Diesel Soot Oxidation

Development of non-noble metal catalysts with improved structural, surface, and redox properties for catalytic soot oxidation has gained an enormous interest. Among practical alternatives, ceria-supported transition metal oxides have been proved …

Autoren:
Perala Venkataswamy, Deshetti Jampaiah, Deboshree Mukherjee, Benjaram M. Reddy

24.08.2019 | Special Issue: 2018 CLEERS Workshop, September 18-20, Ann Arbor, Michigan, United States

A Review of the 2018 U.S.-DOE CLEERS Conference: Trends and Deeper Insights in Reduction of NOx and Particulate in Diesel and Gasoline Engines and Advances in Catalyst Materials, Mechanisms, and Emission Control Technologies

The annual CLEERS conference sponsored by the U.S. Department of Energy and organized by the Oak Ridge National Laboratory was held in Ann Arbor, MI, 18–20 September 2018. It brought together emission control scientists, engineers, and …

Autoren:
M. Masoudi, J. Hensel, E. Tegeler

23.08.2019

Development of Reduction Scenarios Based on Urban Emission Estimation and Dispersion of Exhaust Pollutants from Light Duty Public Transport: Case of Tabriz, Iran

The transportation sector is one of the major air pollution sources in cities and accounts for about 72% of total air pollution in Tabriz, Iran. The economic burden of air pollution on Iran’s economy was estimated to be 8 and 10 billion dollars in …

Autoren:
Mina Jamshidi Kalajahi, Leila Khazini, Yousef Rashidi, Saeed Zeinali Heris

22.08.2019

TiO2 Coated-Asphalt Buton Photocatalyst for High-Performance Motor Vehicles Gas Emission Mitigation

Gas emission from motor vehicle has become the origin of many serious issues including health and air-quality, green house effect, and other environment issues. While motor vehicle manufacturers have set a particular standard of gas emission and …

Autoren:
Muhammad Zakir Muzakkar, Muhammad Nurdin, Ima Ismail, Maulidiyah Maulidiyah, Dwiprayogo Wibowo, Ratna Ratna, Siti Khatijah Md Saad, Akrajas Ali Umar

21.08.2019 | Special Issue: In Recognition of Professor Wolfgang Grünert's Contributions to the Science and Fundamentals of Selective Catalytic Reduction of NOx

Laser Raman Spectroscopic Investigation on the Conversion of Molten Urea into NH3 for the Selective Catalytic Reduction of NOx in Oxygen-Rich Exhaust Gases

The selective catalytic reduction (SCR) is widely used for the NOx removal from the oxygen-rich exhaust gases of diesel passenger cars and trucks. SCR implies the reduction of NOx by NH3 originated from AdBlue, which is an aqueous solution of urea …

Autoren:
Philipp Langenfeld, Christoph Hahn, Andreas Roppertz, Sven Kureti

07.08.2019 | Special Issue: In Recognition of Professor Wolfgang Grünert's Contributions to the Science and Fundamentals of Selective Catalytic Reduction of NOx

Synthesis and Study of Bimetallic Pd-Rh System Supported on Zirconia-Doped Alumina as a Component of Three-way Catalysts

The present work is aimed at preparation and detailed characterization of the Pd-Rh/γ-Al2O3-ZrO2 composition used as a component of three-way catalysts. Physicochemical properties, such as specific surface area, morphology, secondary structure …

Autoren:
Aleksey A. Vedyagin, Roman M. Kenzhin, Mikhail Yu. Tashlanov, Vladimir O. Stoyanovskii, Pavel E. Plyusnin, Yury V. Shubin, Ilya V. Mishakov, Alexander V. Kalinkin, Mikhail Yu. Smirnov, Valerii I. Bukhtiyarov

01.08.2019 | Special Article from the ETH Conference 2018

Design of a Novel Gasoline Particulate Filter Aging Method

Gasoline particulate filters (GPF) recently entered the market and are already regarded as state-of-the-art for gasoline exhaust aftertreatment systems to enable EU6d-TEMP fulfillment and beyond. Due to its rapid market introduction, the field of …

Autoren:
Stefan Sterlepper, Johannes Claßen, Stefan Pischinger, Jim Cox, Michael Görgen, Helmut Lehn, Johannes Scharf

18.06.2019 | Special Issue: In Recognition of Professor Wolfgang Grünert's Contributions to the Science and Fundamentals of Selective Catalytic Reduction of NOx

Catalytic Carbon Monoxide Oxidation over Potassium-Doped Manganese Dioxide Nanoparticles Synthesized by Spray Drying

Manganese oxides are promising catalysts for the oxidation of CO as well as the removal of volatile organic compounds from exhaust gases because of their structural versatility and their ability to reversibly change between various oxidation …

Autoren:
Kevin Ollegott, Niklas Peters, Hendrik Antoni, Martin Muhler

20.05.2019 | Special Issue: In Recognition of Professor Wolfgang Grünert's Contributions to the Science and Fundamentals of Selective Catalytic Reduction of NOx

Three-way Catalysis with Noble Metal-Substituted La(Fe,Co)O3 Perovskites—the Role of Noble and Base Metal Components

La(FexCo1-x)O3 perovskites with noble metals incorporated (Pd in different amounts, Pt, Rh; with Pd at x ≈ 1, 0.7, 0) were prepared via the dry citrate method and examined with respect to their behavior in three-way catalysis (lean and …

Autoren:
Sascha Heikens, Viktor Ulrich, Pragati S. Joshi, Bilge Saruhan-Brings, Wolfgang Grünert