{"title":"Catalytic Methods for Purification of Exhaust Gases Produced by Ammonia-Fueled Engines","authors":"Prof.Dr. Lucjan Chmielarz","doi":"10.1002/cctc.202500768","DOIUrl":null,"url":null,"abstract":"<p>Ammonia is a potential fuel for use in engines. Burning of ammonia does not result in the CO<sub>x</sub> formation, and therefore, ammonia could be classified as a sustainable fuel. On the other hand, in this case, exhaust gases may contain significant amounts of unburned ammonia and nitrogen oxides (including N<sub>2</sub>O) as pollutants. The problem of the possible catalytic systems for exhaust gases purification is analyzed and discussed, mainly with respect to the application of catalytic processes for NO<sub>x</sub>, N<sub>2</sub>O, and ammonia conversions. The various types of catalysts operating under condtions of exhaust gases (e.g., temperature and composition) were compared and the most promissing catalytic systems were proposed. Attention was mainly focused on the use of pure ammonia as a fuel, although some issues relating to the combustion of mixed fuels, such as ammonia - hydrocarbon fuels as well as ammonia - hydrogen (H<sub>2</sub> obtained by catalytic decomposition of ammonia) were also presented and discussed.</p>","PeriodicalId":141,"journal":{"name":"ChemCatChem","volume":"17 17","pages":""},"PeriodicalIF":3.9000,"publicationDate":"2025-08-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ChemCatChem","FirstCategoryId":"92","ListUrlMain":"https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cctc.202500768","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Ammonia is a potential fuel for use in engines. Burning of ammonia does not result in the COx formation, and therefore, ammonia could be classified as a sustainable fuel. On the other hand, in this case, exhaust gases may contain significant amounts of unburned ammonia and nitrogen oxides (including N2O) as pollutants. The problem of the possible catalytic systems for exhaust gases purification is analyzed and discussed, mainly with respect to the application of catalytic processes for NOx, N2O, and ammonia conversions. The various types of catalysts operating under condtions of exhaust gases (e.g., temperature and composition) were compared and the most promissing catalytic systems were proposed. Attention was mainly focused on the use of pure ammonia as a fuel, although some issues relating to the combustion of mixed fuels, such as ammonia - hydrocarbon fuels as well as ammonia - hydrogen (H2 obtained by catalytic decomposition of ammonia) were also presented and discussed.
期刊介绍:
With an impact factor of 4.495 (2018), ChemCatChem is one of the premier journals in the field of catalysis. The journal provides primary research papers and critical secondary information on heterogeneous, homogeneous and bio- and nanocatalysis. The journal is well placed to strengthen cross-communication within between these communities. Its authors and readers come from academia, the chemical industry, and government laboratories across the world. It is published on behalf of Chemistry Europe, an association of 16 European chemical societies, and is supported by the German Catalysis Society.