Production and characterization of AG based catalyst for HC-SCR system

Yıl 2021, , 154 - 160, 31.12.2021

Hakan Hanna Çalışkan , Ali Keskin

https://doi.org/10.18245/ijaet.963529

Öz

In this study, Ag-Cu-Ce/TiO2 catalyst was produced by using impregnation method for hydrocarbon-selective catalytic reduction (HC-SCR) system. In this system, as a reducing agent ethyl alcohol and urea solution mixture was used. The NOx conversion efficiency of the system with using synthesized catalyst was analyzed. Chemical and structural properties of the used catalyst were examined by SEM, BET and XRD analyzes. In the SCR test system, the experiments were conducted in different temperatures ranged from 200 C to 300 C in constant gas hourly space velocity (GHSV) (30000 h-1). The tests were carried out by using 2 cylinders, V-type diesel engine with constant speed (3000 rpm) under 3 different loads (1 kW, 3 kW and 5 kW). These tests identified the effects of produced catalyst on NOx conversion rate of SCR system. In result, NOx conversion rates were measured between 66 % and 93 %. In 1 kW load, at 300 C, SV= 30000 h-1, 100% ethyl alcohol spraying the NOx conversion rate was reached approximately to 93% which is the highest point.

Anahtar Kelimeler

HC-SCR, NOX, CATALYST, DIESEL ENGINE, EMISSION

Proje Numarası

FYL-2019-11570

Kaynakça

• I. A. Reşitoğlu, “Dizel motorlarda kirletici emisyonların kontrol edilmesine yönelik Fe2O3 esaslı katalizörlerin kullanıldığı DOC ve SCR sistemlerinin geliştirilmesi,” Selçuk Üniversitesi, 2016.
• M. Piumetti, S. Bensaid, D. Fino, and N. Russo, “Catalysis in Diesel engine NOX aftertreatment: a review,” Catal. Struct. React., vol. 1, no. 4, pp. 155–173, 2015.
• Z. Keskin, “Metal Nano Partiküllerin Kullanımı ile Seçici Katalitik İndirgeme Sistemi Tasarlanması ve Test Edilmesi Metal Nano Partiküllerin Kullanımı ile Seçici Katalitik İndirgeme Sistemi Tasarlanması ve Test Edilmesi,” Tarsus Üniversitesi, 2019.
• Z. Keskin, T. Özgür, H. Özarslan, and A. C. Yakaryılmaz, “Effects of hydrogen addition into liquefied petroleum gas reductant on the activity of Ag–Ti–Cu/Cordierite catalyst for selective catalytic reduction system,” Int. J. Hydrogen Energy, vol. 46, no. 10, pp. 7634–7641, 2021.
• R. Mrad, A. Aissat, R. Cousin, D. Courcot, and S. Siffert, “Catalysts for NOX selective catalytic reduction by hydrocarbons (HC-SCR),” Appl. Catal. A Gen., vol. 504, no. x, pp. 542–548, 2015.
• H. T. Xu, Z. Q. Luo, N. Wang, Z. G. Qu, J. Chen, and L. An, “Experimental study of the selective catalytic reduction after-treatment for the exhaust emission of a diesel engine,” Appl. Therm. Eng., vol. 147, no. July 2018, pp. 198–204, 2019.
• Yasar, A. Keskin, Z. Keskin, H. Özarslan, and S. Kaltar, “Low temperature catalytic activity of Ag based SCR catalysts with 2-propanol-Toluene mixture as reductant,” Mater. Res. Express, vol. 6, no. 9, 2019.
• M. Ambast, S. A. Malamis, and M. P. Harold, “Coupled uptake and conversion of C12H26 and NO on Pd / SSZ-13 : Experiments and modeling,” Chem. Eng. J., vol. 423, no. February, p. 129958, 2021.
• F. Liu, L. Yang, J. Cheng, X. Wu, W. Quan, and K. Saito, “Low temperature DeNOX catalytic activity with C2H4 as a reductant using mixed metal Fe-Mn oxides supported on activated carbon,” Energies, vol. 12, no. 22, 2019.
• N. Zhang et al., “A MnO2-based catalyst with H2O resistance for NH3-SCR: Study of catalytic activity and reactants-H2O competitive adsorption,” Appl. Catal. B Environ., vol. 270, no. February, p. 118860, 2020.
• M. Al Cheikh Mohamad Ahmad, A. Keskin, H. Özarslan, and Z. Keskin, “Properties of ethyl alcohol-water mixtures as a reductant in a SCR system at low exhaust gas temperatures,” Energy Sources, Part A Recover. Util. Environ. Eff., vol. 00, no. 00, pp. 1–12, 2020.
• F. Martinovic et al., “Simultaneous improvement of ammonia mediated NOX SCR and soot oxidation for enhanced SCR-on-Filter application,” Appl. Catal. A Gen., vol. 596, no. x, 2020.
• P. Xu, J. Zheng, F. Jing, and W. Chu, “Influence of support precursor on FeCe-TiO2 for selective catalytic reduction of NO with ammonia,” Mol. Catal., vol. 508, no. February, p. 111586, 2021.
• T. Qiao, Z. Liu, C. Liu, W. Meng, H. Sun, and Y. Lu, “MnOx location on MnOx-ZSM-5 to influence the catalytic activity for selective catalytic reduction of NOx by NH3,” Appl. Catal. A Gen., vol. 617, no. January, p. 118128, 2021.
• Y. Cao et al., “The effect of Si environments on NH3 selective catalytic reduction performance and moisture stability of Cu-SAPO-34 catalysts,” J. Catal., vol. 391, no. x, pp. 404–413, 2020.
• I. A. Resitoglu, A. Keskin, H. Özarslan, and H. Bulut, “Selective catalytic reduction of NOX emissions by hydrocarbons over Ag–Pt/Al2O3 catalyst in diesel engine,” Int. J. Environ. Sci. Technol., vol. 16, no. 11, pp. 6959–6966, 2019.
• [17] C. L. Song, F. Bin, Z. M. Tao, F. C. Li, and Q. F. Huang, “Simultaneous removals of NOX, HC and PM from diesel exhaust emissions by dielectric barrier discharges,” J. Hazard. Mater., vol. 166, no. 1, pp. 523–530, 2009.
• G. Qi and R. T. Yang, “Performance and kinetics study for low-temperature SCR of NO with NH3 over MnOX-CeO2 catalyst,” J. Catal., vol. 217, no. 2, pp. 434–441, 2003.
• A. Åberg, A. Widd, J. Abildskov, and J. K. Huusom, “Parameter estimation and analysis of an automotive heavy-duty SCR catalyst model,” Chem. Eng. Sci., vol. 161, pp. 167–177, 2017.
• L. Valanidou, C. Theologides, A. A. Zorpas, P. G. Savva, and C. N. Costa, “A novel highly selective and stable Ag/MgO-CeO2-Al2O3 catalyst for the low-temperature ethanol-SCR of NO,” Appl. Catal. B Environ., vol. 107, no. 1–2, pp. 164–176, 2011.
• B. Sawatmongkhon, “Modelling of catalytic aftertreatment of NOX emissions using hydrocarbon as a reductant,” no. x, p. 115, 2011.
• D. Yang et al., “NO selective catalytic reduction with propylene over one-pot synthesized Fe-SAPO-34 catalyst under diesel exhaust conditions,” Fuel, no. November, p. 119822, 2020.
• R. Wu et al., “Enhancement of low-temperature NH3-SCR catalytic activity and H2O & SO2 resistance over commercial V2O5-MoO3/TiO2 catalyst by high shear-induced doping of expanded graphite,” Catal. Today, no. April, pp. 1–9, 2020.
• R. Yu, Z. Zhao, S. Huang, and W. Zhang, “Cu-SSZ-13 zeolite–metal oxide hybrid catalysts with enhanced SO2-tolerance in the NH3-SCR of NOX,” Appl. Catal. B Environ., vol. 269, no. February, p. 118825, 2020.
• Y. Su, N. Wen, J. Cheng, W. Deng, H. Zhou, and B. Zhao, “Experimental study on SCR-C3H6 over Cu-Fe/Al-PILC catalysts: Catalytic performance, characterization, and mechanism,” Ind. Eng. Chem. Res., vol. 59, no. 33, pp. 14776–14788, 2020.
• K. Liu, H. He, and B. Chu, “Microkinetic study of NO oxidation , standard and fast NH3 -SCR on CeWOX at low temperatures,” Chem. Eng. J., vol. 423, no. February, p. 130128, 2021.
• G. Fu et al., “Enhanced hydrothermal stability of Cu/SSZ-39 with increasing Cu contents, and the mechanism of selective catalytic reduction of NO,” Microporous Mesoporous Mater., vol. 320, no. December 2020, p. 111060, 2021.
• Keskin, A. Yaşar, O. C. Candemir, and H. Özarslan, “Influence of transition metal based SCR catalyst on the NOX emissions of diesel engine at low exhaust gas temperatures,” Fuel, vol. 273, no. x, 2020.