Mutlu ŞİMŞEK, Onur DEMİR, Deniz ŞANLI YILDIZ, Selmi Erim BOZBAĞ, Can ERKEY, Hüseyin Barkın ÖZENER, Gökhan HİSAR

8495

Experimental and theoretical study of NH3 adsorption and desorption over a Cu-chabazite NH3 -SCR catalyst

Experimental and theoretical study of NH3 adsorption and desorption over a Cu-chabazite NH3 -SCR catalyst

NH3 adsorption and desorption behavior of a commercial Cu-chabazite (CHA) NH3 selective catalyticreduction (NH3 -SCR) catalyst was studied in the presence and absence of H2 O. NH3 uptake values at various adsorptiontemperatures were obtained during various steps of the adsorption and temperature-programmed desorption (TPD)experiments. Total NH3 uptake decreased from 4.6 to 1.6 g NH3 /L catalyst when the adsorption temperature wasincreased from 50 to 300 ◦ C. Three major adsorption sites for NH3 adsorption could be identified and quantified usingTPD experiments, namely loosely, moderately, and strongly bound NH3 with peak centers at around 147, 266, and 447◦ C. The total NH3 uptake was significantly affected by the presence of H2 O in the feed. This resulted in a significantuptake loss (nearly 60%) for the loosely bound NH3 . Three single-site and one three-site model were developed andcompared in terms of NH3 uptake and release. The effects of site density values and thermodynamic restrictions inone-site models were investigated. The model using site density values obtained during the TPD phase resulted in thebest fit among one-site models. The three-site model, which uses site density values obtained using dry adsorption ofNH3 , best represented the experimental data.
PDF

___

  • 1. Kwak, J. H.; Tonkyn, R. G.; Kim, D. H.; Szanyi, J.; Peden, C. H. F. J. Catal. 2010, 275, 187-190.
  • 2. Kwak, J. H.; Tran, D.; Burton, S. D.; Szanyi, J.; Lee, J. H.; Peden, C. H. F. J. Catal. 2012, 287, 203-209.
  • 3. Gao, F.; Kwak, J. H.; Szanyi, J.; Peden, C. H. F. Top. Catal. 2013, 56, 1441-1459.
  • 4. Brandenberger, S.; Krocher, O.; Tissler, A.; Althoff, R. Catal. Rev. 2008, 50, 492-531.
  • 5. Colombo, M.; Nova, I.; Tronconi, E. Catal. Today 2012, 197, 243-255.
  • 6. Janssens, T. V. W.; Falsig, H.; Lundegaard, L. F.; Vennestrom, P. N. R.; Rasmussen, S. B.; Moses, P. G.; Giordanino, F.; Borfecchia, E.; Lomachenko, K. A.; Lamberti, C. et al. ACS Catal. 2015, 5, 2832-2845.
  • 7. Chatterjee, D.; Burkhardt, T.; Bandl-Konrad, B.; Braun, T.; Tronconi, E.; Nova, I.; Ciardelli, C. SAE Technical Paper Series 2005-01-965; SAE International: Warrendale, PA, USA, 2005,.
  • 8. Chatterjee, D.; Burkhardt, T.; Weibel, M.; Nova, I.; Grossale, A.; Tronconi, E. SAE Technical Paper Series 2007- 01-1136; SAE International: Warrendale, PA, USA, 2007,.
  • 9. Olsson, L.; Sjovall, H.; Blint, R. J. Appl. Catal. B-Environ. 2008, 81, 203-217.
  • 10. Olsson, L.; Wijayanti, K.; Leistner, K.; Kumar, A.; Joshi, S. Y.; Kamasamudram, K.; Currier, N. W.; Yezerets, A. Appl. Catal. B-Environ. 2015, 174, 212-224.
  • 11. Supriyanto; Wijayanti, K.; Kumar, A.; Joshi, S.; Kamasamudram, K.; Currier, N. W.; Yezerets, A.; Olsson, L. Appl. Catal. B-Environ. 2015, 163, 382-392.
  • 12. Sjovall, H.; Blint, R. J.; Olsson, L. Appl. Catal. B-Environ. 2009, 92, 138-153.
  • 13. Bates, S. A.; Verma, A. A.; Paolucci, C.; Parekh, A. A.; Anggara, T.; Yezerets, A.; Schneider, W. F.; Miller, J. T.; Delgass, W. N.; Ribeiro, F. H. J. Catal. 2014, 312, 87-97.
  • 14. Woertink, J. S.; Smeets, P. J.; Groothaert, M. H.; Vance, M. A.; Sels, B. F.; Schoonheydt, R. A.; Solomon, E. I. P. Natl. Acad. Sci. USA 2009, 106, 18908-18913.
  • 15. Groothaert, M. H.; Lievens, K.; van Bokhoven, J. A.; Battiston, A. A.; Weckhuysen, B. M.; Pierloot, K.; Schoonheydt, R. A. ChemPhysChem 2003, 4, 626-630.
  • 16. Groothaert, M. H.; van Bokhoven, J. A.; Battiston, A. A.; Weckhuysen, B. M.; Schoonheydt, R. A. J. Am. Chem. Soc. 2003, 125, 7629-7640.
  • 17. Wang, D.; Zhang, L.; Li, J. H.; Kamasamudram, K.; Epling, W. S. Catal. Today 2014, 231, 64-74.
  • 18. Paolucci, C.; Verma, A. A.; Bates, S. A.; Kispersky, V. F.; Miller, J. T.; Gounder, R.; Delgass, W. N.; Ribeiro, F. H.; Schneider, W. F. Angew. Chem. Int. Edit. 2014, 53, 11828-11833.
  • 19. Giordanino, F.; Borfecchia, E.; Lomachenko, K. A.; Lazzarini, A.; Agostini, G.; Gallo, E.; Soldatov, A. V.; Beato, P.; Bordiga, S.; Lamberti, C. J. Phys. Chem. Lett. 2014, 5, 1552-1559.
  • 20. Bates, S. A.; Delgass, W. N.; Ribeiro, F. H.; Miller, J. T.; Gounder, R. J. Catal. 2014, 312, 26-36.
  • 21. Metkar, P. S.; Harold, M. P.; Balakotaiah, V. Appl. Catal. B-Environ. 2012, 111, 67-80.
  • 22. Sjövall, H.; Blint, R. J.; Olsson, L. J. Phys. Chem. C 2009, 113, 1393-1405.
  • 23. Colombo, M.; Nova, I.; Tronconi, E.; Schmeisser, V.; Weibel, M. Catal. Today 2014, 231, 99-104.
  • 24. Gamma Technologies. GT-SUITE Exhaust Aftertreatment Application Manual; Gamma Technologies LLC: Westmont, IL, USA, 2016.
  • 25. Sharma, S. B.; Meyers, B. L.; Chen, D. T.; Miller, J.; Dumesic, J. A. Appl. Catal. A-Gen. 1993, 102, 253.
Turkish Journal of Chemistry-Cover
  • ISSN: 1300-0527
  • Yayın Aralığı: 6
  • Yayıncı: TÜBİTAK
Arşiv
Sayıdaki Diğer Makaleler

Lokman LİV, Zekerya DURSUN, Nuri NAKİBOĞLU

Synthesis of acetamide derivatives of 1,2,4-triazole bearing azinane and their binding interactions with bovine serum albumin using spectroscopic techniques

Hira KHALID, Javed IQBAL, Aziz UR-REHMAN, Muhammad Athar ABBASI, Sabahat Zahra SIDDIQUI, Sabina Jhaumeer LAULLOO, Nausheen JOONDAN, Aniisah Banu TAUPASS, Shahid RASOOL, Syed Adnan Ali SHAH

Synthesis of E-stilbene azomethines as potent antimicrobial and antioxidant agents

Ahsan IQBAL, Zulfiqar Ali KHAN, Muhammad USMAN, Ayesha BARI, Muhammad Aamir SAJID, Sohail Anjum SHAHZAD, Shakeel Ahmad KHAN, Abdul H. FAUQ

Mustafa BENER, Mustafa Reşat APAK

Javed IQBAL, Aziz Ur REHMAN, Muhammad Athar ABBASI, Sabahat Zahra SIDDIQUI, Hira KHALID, Sabina Jhaumeer LAULLOO, Nausheen JOONDAN, Aniisah Banu TAUPASS, Shahid RASOOL, Syed Adnan Ali SHAH

Selmi Erim BOZBAĞ, Mutlu ŞİMŞEK, Onur DEMİR, Deniz Şanli YILDIZ, Hüseyin Barkin ÖZENER, Gökhan HİSAR, Can ERKEY

Pinar SEYİTDANLIOĞLU, Essam Hamied Ahmed HANASHALHALSHAHABY, Canan ÜNALEROĞLU

Fabrication and electrochemical performance of La$_{0.595}$V$_{0.005}$Sr$_{0.4}$MnO$_{3-\delta }$ (LV05SM) cathode material for solid oxide fuel cells

Ayşenur Eslem KISA, Oktay DEMİRCAN

Experimental and theoretical study of NH3 adsorption and desorption over a Cu-chabazite NH3 -SCR catalyst

Mutlu ŞİMŞEK, Onur DEMİR, Deniz ŞANLI YILDIZ, Selmi Erim BOZBAĞ, Can ERKEY, Hüseyin Barkın ÖZENER, Gökhan HİSAR

Farhat IBRAHEEM, Furqan Ahmad SADDIQUE, Sana ASLAM, Asim MANSHA, Tahir FAROOQ, Matloob AHMAD