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Journals / Çukurova Üniversitesi Mühendislik-Mimarlik Fakültesi Dergisi / 2020 / Cilt: 35 - Sayı: 3

Investigation on SCR Activity of Ag-Pt-W/TiO2 Catalyst

Ag-Pt-W/TiO2 Katalizörünün SCR Aktivitesinin Araştırılması

Zeycan KESKİN
Pages
805–812
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

When the surface area of not pre-treated cordierite and synthesized catalyst was compared, it was found that the surface area of the catalyst was approximately 60.76 times higher.

📌 3 Key Takeaways

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Objective & Hypothesis:In this study, the effect of catalyst containing silver (Ag)-platinum (Pt)-tungsten (W) on the selective catalytic reduction (SCR) of nitrogen oxides (NOx) was investigated.
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Key Findings & Data:Before coating, the cordierite material was pre-treated with 40% oxalic acid solution and made ready for coating by increasing the surface area.
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Conclusion & Impact:When the surface area of not pre-treated cordierite and synthesized catalyst was compared, it was found that the surface area of the catalyst was approximately 60.76 times higher.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

In this study, the effect of catalyst containing silver (Ag)-platinum (Pt)-tungsten (W) on the selective catalytic reduction (SCR) of nitrogen oxides (NOx) was investigated. Cordierite was used as catalyst support material and catalyst production was carried out by impregnation method. Before coating, the cordierite material was pre-treated with 40% oxalic acid solution and made ready for coating by increasing the surface area. After coating, the catalyst was characterized by BET analysis. When the surface area of not pre-treated cordierite and synthesized catalyst was compared, it was found that the surface area of the catalyst was approximately 60.76 times higher. The activity of the Ag-Pt-W/TiO2 catalyst within the temperature range of 200 to 270 °C, at three different space velocities (40000 h-1 , 50000 h-1 , 60000 h-1 ) and four different engine loads (1 kW, 2 kW, 3 kW 4 kW) has been investigated. It was found that the catalytic activity increased with the increase in temperature but decreased with the increase in the engine load. The highest NOx conversion ratio of the catalyst was found to be 86.1%, which was achieved at 40000 h-1 space velocity, 270 °C temperature and 4 kW engine load

Özet

Bu çalışmada gümüş (Ag)-platin (Pt)-tungsten (W) içeren katalizörün azot oksitlerin (NOx) seçicikatalitik indirgenmesine (SCR) etkisi araştırılmıştır. Katalizör destek materyali olarak kordiyeritkullanılmış olup katalizör üretiminde daldırma yöntemi kullanılmıştır. Kaplamadan önce kordiyeritmateryali %40’lık okzalik asit çözeltisiyle ön muamele işleminden geçirilmiş ve yüzey alanı arttırılarakkaplamaya hazır hale getirilmiştir. Kaplama işleminden sonra BET analizi ile katalizör karakterizeedilmiştir. Sentezlenen katalizör ile ön muamele işleminden geçirilmeyen kordiyeritin yüzey alanıkarşılaştırıldığında, katalizörün yüzey alanının yaklaşık olarak 60,76 kat fazla olduğu tespit edilmiştir.Ag-Pt-W/TiO2 katalizörünün aktivitesi 200 ile 270 °C sıcaklık aralığında, üç farklı akış hızında(40000 h-1, 50000 h-1, 60000 h-1) ve dört farklı motor yükünde (1 kW, 2 kW, 3 kW, 4 kW) araştırılmıştır.Katalitik aktivitenin sıcaklık artışına bağlı olarak arttığı fakat motor yükü artışına bağlı olarak azaldığıbelirlenmiştir. Katalizörün en yüksek NOx dönüşüm oranı %86,1 olarak bulunmuştur ve bu değer40000 h-1 akış hızında, 270 °C sıcaklıkta ve 4 kW motor yükünde elde edilmiştir.

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Cite This Article

KESKİN, Z. (2020). Investigation on SCR Activity of Ag-Pt-W/TiO2 Catalyst. Çukurova Üniversitesi Mühendislik-Mimarlik Fakültesi Dergisi, Cilt: 35 - Sayı: 3, 805–812. https://ajindex.com/articles/350212

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