Abstract
High engine efficiency, comparably low pollutant emissions, and advantageous carbon dioxide emissions make lean-burn natural gas engines an attractive alternative compared to conventional diesel or gasoline engines. However, incomplete combustion in natural gas engines results in emission of small amounts of methane, which has a strong global warming potential and consequently makes an efficient exhaust gas aftertreatment system imperative. Palladium-based catalysts are considered as most effective in low temperature methane conversion, but they suffer from inhibition by the combustion product water and from poisoning by sulfur species that are typically present in the gas stream. Rational design of the catalytic converter combined with recent advances in catalyst operation and process control, particularly short rich periods for catalyst regeneration, allow optimism that these hurdles can be overcome. The availability of a durable and highly efficient exhaust gas aftertreatment system can promote the widespread use of lean-burn natural gas engines, which could be a key step towards reducing mankind’s carbon footprint.
Highlights
The continuous technological progress initiated by industrialization resulted in our modern globalized world with a society whose energy supply is mainly based on carbon-containing fossil resources like coal, oil, and natural gas
While considerable amounts of carbon monoxide (CO), nitric oxide (NOx), and hydrocarbons (HC) are emitted during stoichiometric operation, especially NOx emissions can be minimized by lean operation [8, 9], since NOx mainly forms during a high temperature reaction between oxygen and nitrogen, which is suppressed by the low combustion temperatures during lean operation
Modern state-of-the-art aftertreatment systems have substantially grown compared to the simple oxidation catalyst originally proposed for emission control by pioneer Eugene J
Summary
The continuous technological progress initiated by industrialization resulted in our modern globalized world with a society whose energy supply is mainly based on carbon-containing fossil resources like coal, oil, and natural gas. Combustion of these resources releases energy, and leads to considerable pollutant emissions. Fossil sources currently represent the main feedstock for natural gas, promising alternative concepts like biomethane and power-to-gas technologies can open up a sustainable access to the highly valuable energy source methane Such carbon-neutral approaches terminate gas emissions that typically occur during the production of fossil natural gas, which increases the sustainability of the whole value chain even further
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
