[
    {
        "id": "osp-13360",
        "type": "article-journal",
        "title": "Storage of Nitrous Oxide (NOx) in Diesel Engine Exhaust Gas using Alumina-Based Catalysts: Preparation, Characterization, and Testing",
        "author": [
            {
                "family": "Alsobaai",
                "given": "Ahmed Mubarak"
            }
        ],
        "URL": "https://omanscience.com/en/articles/storage-of-nitrous-oxide-nox-in-diesel-engine-exhaust-gas-using-alumina-based-catalysts-preparation-characterization-and-testing",
        "language": "en",
        "issued": {
            "date-parts": [
                [
                    2017
                ]
            ]
        },
        "container-title": "The Journal of Engineering Research",
        "volume": "14",
        "issue": "1",
        "page": "64",
        "DOI": "10.24200/tjer.vol14iss1pp64-73",
        "publisher": "Sultan Qaboos University",
        "ISSN": "1726-6009",
        "abstract": "This work investigated the nitrous oxide (NOx) storage process using alumina-based catalysts (K2 O/Al2 O3 , CaO/Al2 O3, and BaO/Al2 O3 ). The feed was a synthetic exhaust gas containing 1,000 ppm of nitrogen monoxide (NO), 1,000 ppm i-C4 H10 , and an 8% O2 and N2 balance. The catalyst was carried out at temperatures between 250–450°C and a contact time of 20 minutes. It was found that NOx was effectively adsorbed in the presence of oxygen. The NOx storage capacity of K2 O/Al2 O3 was higher than that of BaO/Al2 O3. The NOx storage capacity for K2 O/Al2 O3 decreased with increasing temperature and achieved a maximum at 250°C. Potassium loading higher than 15% in the catalyst negatively affected the morphological properties. The combination of Ba and K loading in the catalyst led to an improvement in the catalytic activity compared to its single metal catalysts. As a conclusion, mixed metal oxide was a potential catalyst for de-NOx process in meeting the stringent diesel engine exhaust emissions regulations. The catalysts were characterized by a number of techniques and measurements, such as X-ray diffraction (XRD), electron affinity (EA), a scanning electron microscope (SEM), Brunner-Emmett-Teller (BET) to measure surface area, and pore volume and pore size distribution assessments."
    }
]