A review of recent advances in selective catalytic NOx reduction reactor technologies
Source abstract
Abstract
Abstract Research on NOx treatment is extensive in recent years due to growing environmental awareness. Selective catalytic reduction (SCR) of NOx, as a proven technology, offers higher NOx control efficiency than many other NOx treatment methods. The present work reviews the recent development of SCR reactor technologies. Firstly, catalysts and mechanism of different SCRs were briefly summarized. Different SCR reactors, e.g. structured reactor, fluidized bed reactor and moving bed reactor, were then discussed. As a more advanced technology, multifunctional reactors were also developed for SCR process and could be divided into two categories: decoupled adsorption-reaction process and combined SCR system. The mechanism and properties of these processes were discussed in detail. Some recommendations were given for the future work in SCR reactor design. SCR reactor technology for emerging energy processes was also addressed, such as oxyfuel combustion and biofuel conversion processes, which put forward new requirements for SCR technologies and also open new opportunities for advanced design of SCR reactors.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Catalytic Processes in Materials Science · Catalysis and Oxidation Reactions · Industrial Gas Emission Control
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References (100+)
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1. Extended reactor concept for dynamic deNOx design10.1016/0009-2509(88)87086-6 ↗
2. On the promotion by SO2 of the SCR process over Ag/Al2O3: Influence of SO2 concentration with C3H8 versus C3H8 as reductant10.1016/S0926-3373(02)00086-3 ↗
3. From a fixed bed Ag–alumina catalyst to a modified reactor design: How to enhance the crucial heterogeneous–homogeneous reactions in HC-SCR10.1016/j.ces.2004.08.036 ↗
4. NOx removal over a double-bed NSR-SCR reactor configuration10.1016/j.cattod.2010.02.003 ↗
5. Hydrothermal deactivation of Fe-ZSM-5 catalysts for the selective catalytic reduction of NO with NH310.1016/j.apcatb.2010.11.006 ↗
6. The determination of the activities of different iron species in Fe-ZSM-5 for SCR of NO by NH310.1016/j.apcatb.2010.01.013 ↗
7. High-temperature and high-concentration SCR of NO with NH3: Application in a CCS process for removal of carbon dioxide10.1016/j.cej.2012.03.006 ↗
8. An overview of the production and use of ammonia in NSR+SCR coupled system for NOx reduction from lean exhaust gas10.1016/j.cattod.2012.07.032 ↗
9. The mechanism of the selective reduction of nitrogen oxides by hydrocarbons on zeolite catalysts10.1016/S0920-5861(00)00453-3 ↗
10. Cu-ZSM-5 zeolite highly active in reduction of NO with decane: Effect of zeolite structural parameters on the catalyst performance10.1016/j.apcatb.2005.02.026 ↗
11. Cu-ZSM-5 zeolite highly active in reduction of NO with decane under water vapor presence – Comparison of decane, propane and propene by in situ FTIR10.1016/j.apcatb.2005.02.033 ↗
12. Catalytic behaviour of hybrid LNT/SCR systems: Reactivity and in situ FTIR study10.1016/j.jcat.2011.06.002 ↗
13. Activity and durability of Fe/ZSM-5 catalysts for lean burn NOx reduction in the presence of water vapor10.1016/S0920-5861(98)00078-9 ↗
14. Reduction of NOx over Fe/ZSM-5 catalysts: Adsorption complexes and their reactivity toward hydrocarbons10.1006/jcat.1998.2277 ↗
15. Reaction kinetics of selective catalytic reduction of NOx by propylene over Fe/ZSM-510.1016/j.cej.2012.09.055 ↗
16. Modeling and simulation of nitrogen oxides adsorption in fluidized bed reactors10.1016/j.ces.2013.03.052 ↗
17. The different impacts of SO2 and SO3 on Cu/zeolite SCR catalysts10.1016/j.cattod.2010.01.013 ↗
18. Cho, B.K. (2012). Dual bed catalyst system for NOx reduction in lean burn engine exhaust. US Patent 8,099,951 B2.
19. Chou, T.-S. (1995). FCC process with fines tolerant SCR reactor. US Patent 5,413,699.
20. NOx abatement for lean-burn engines under lean-rich atmosphere over mixed NSR-SCR catalysts: Influences of the addition of a SCR catalyst and of the operational conditions10.1016/j.apcata.2009.06.008 ↗
21. Selective catalytic reduction of NOx on Cu-beta zeolites10.1016/S0926-3373(96)00042-2 ↗
22. Influence of the ion exchanged metal (Cu, Co, Ni and Mn) on the selective catalytic reduction of NOx over mordenite and ZSM-510.1016/j.molcata.2004.08.036 ↗
23. Poisoning effect of SO2 on NO reduction by i-butane over Fe/ZSM-5 prepared by sublimation method10.1006/jcat.2001.3346 ↗
24. Downs, W., Ghorishi, S.B., Bailey, R.T., & Rogers, K.J. (2010). Low-temperature, moving bed catalytic reactor for control of NOx emissions from combustion. US Patent 7,776,293 B2.
25. Further evidence of multiple NOx sorption sites on NOx storage/reduction catalysts10.1016/j.cattod.2004.05.004 ↗
26. Continuous reduction of NO with octane over a silver/alumina catalyst in oxygen-rich exhaust gases: Combined heterogeneous and surface-mediated homogeneous reactions10.1016/S0021-9517(03)00195-7 ↗
27. Influence of the reducing agent for lean NOx reduction over Cu-ZSM-510.1016/j.apcatb.2010.12.037 ↗
28. Ertl · 2008 · 2345
29. SCR of NOx in loop reactors: Asymptotic model and bifurcational analysis10.1016/j.cej.2006.05.017 ↗
30. Experimental investigation of the SCR of NOx in a simulated moving bed reactor10.1002/aic.10916 ↗
31. Optimisation of Ag loading and alumina characteristics to give sulphur-tolerant Ag/Al2O3 catalyst for H2-assisted NH3-SCR of NOx10.1016/j.apcatb.2012.06.014 ↗
32. Present status and perspectives in de-NOx SCR catalysis10.1016/S0926-860X(01)00832-8 ↗
33. Furuyama, K., & Ito, Y. (1987). Reactor of moving bed type. US Patent 4,670,226.
34. Urea-SCR in automotive applications10.1023/B:TOCA.0000024348.34477.4c ↗
35. Gandhi, H.S., Cavataio, J.V., Hammerle, R.H., & Cheng, Y. (2002). Catalyst system for the reduction of NOx and NH3 emissions. US Patent 7,332,135 B2.
36. Simultaneous SO2/NOx removal by a powder-particle fluidized bed10.1016/0920-5861(96)00002-8 ↗
37. Performance of a new copper-based sorbent with the addition of potassium sulfate for SO2/NO removal in a powder-particle fluidized bed10.1627/jpi1958.40.227 ↗
38. Combined Fe-Cu SCR systems with optimized ammonia to NOx ratio for diesel NOx control10.4271/2008-01-1185 ↗
39. Influence of the preparation method on the properties of Fe-ZSM-5 for the selective catalytic reduction of NO by n-decane10.1016/j.cattod.2005.07.067 ↗
40. Kinetics of the conversion of NO to N2 during the oxidation of iron particles by NO in a hot fluidised bed10.1016/S0009-2509(98)00009-8 ↗
41. Review of Ag/Al2O3-reductant system in the selective catalytic reduction of NOx10.1007/s10563-007-9038-9 ↗
42. Fe-ZSM-5 catalysts for the selective reduction of NO by isobutane – The problem of the active sites10.1006/jcat.2002.3775 ↗
43. A comparison of the activity and deactivation of Ag/Al2O3 and Cu/ZSM-5 for HC-SCR under simulated diesel exhaust emission conditions10.1016/j.jcat.2004.12.003 ↗
44. Kinetics of selective catalytic reduction of NO with NH3 on Fe-ZSM-5 catalyst10.1016/S0926-860X(02)00268-5 ↗
45. Is advanced SCR technology at a standstill? A provocation for the academic community and catalyst manufacturers10.1016/S0920-5861(98)00073-X ↗
46. Modeling of NO removal over CuO/gamma-Al2O3 catalyst in a bubbling fluidized bed reactor10.1021/ie8018214 ↗
47. Catalytic decomposition of nitrogen monoxide over copper ionexchanged zeolites. Influence of zeolite structure and aluminum content on the catalytic activity
48. Characterization of Fe/ZSM-5 deNOx catalysts prepared by different methods: Relationships between active Fe sites and NH3-SCR performance10.1016/j.jcat.2008.10.009 ↗
49. Support modification to improve the sulphur tolerance of Ag/Al2O3 for SCR of NOx with propene under lean-burn conditions10.1016/j.apcatb.2009.04.001 ↗
50. Control of combustion-generated nitrogen oxides by selective non-catalytic reduction10.1016/j.jenvman.2006.03.006 ↗
51. Removal of NOx and SO2 by CuO/gamma-Al2O3 sorbent/catalyst in a fluidized-bed reactor10.1021/ie990482r ↗
52. Advantages of a wire gauze structured reactor with a zeolite (Cu-USY) catalyst for NH3-SCR of NOx10.1016/j.cej.2012.10.095 ↗
53. Overall mass transfer coefficients and controlling regimes in catalytic monoliths10.1016/j.ces.2009.11.021 ↗
54. Kalka, D.S. (1995). Integrated SCR electrostatic precipitator. US patent 5,424,044.
55. Ag-Al2O3 catalysts for lean NOx reduction – Influence of preparation method and reductant10.1016/j.molcata.2008.12.003 ↗
56. Promotional effects of H2O treatment on NOx storage over fresh and thermally aged Pt–BaO/Al2O3 lean NOx trap catalysts10.1007/s10562-008-9505-6 ↗
57. Roles of Pt and BaO in the sulfation of Pt/BaO/Al2O3 lean NOx trap materials: Sulfur K-edge XANES and Pt L-III XAFS studies10.1021/jp077563i ↗
58. Sequential high temperature reduction, low temperature hydrolysis for the regeneration of sulfated NOx trap catalysts10.1016/j.cattod.2007.12.134 ↗
59. Isothermal desulfation of pre-sulfated Pt–BaO/gamma-Al2O3 lean NOx trap catalysts with H2: The effect of H2 concentration and the roles of CO2 and H2O10.1016/j.apcatb.2011.10.017 ↗
60. Effect of sulfur loading on the desulfation chemistry of a commercial lean NOx trap catalyst10.1016/j.cattod.2012.05.040 ↗
61. Mn-Fe/ZSM5 as a low-temperature SCR catalyst to remove NOx from diesel engine exhaust10.1016/j.apcatb.2012.06.010 ↗
62. Kittrell, J.R., & Herman, D.L. (1981). Method and apparatus for reducing nitric oxide. US Patent 4,246,234.
63. Alkali deactivation of high-dust SCR catalysts used for NOx reduction exposed to flue gas from 100MW-scale biofuel and peat fired boilers: Influence of flue gas composition10.1016/j.apcatb.2006.03.022 ↗
64. Experimental and modelling study on flow resistance of wire gauzes10.1016/j.cep.2008.10.009 ↗
65. Coupled engineering and chemical approach to the design of a catalytic structured reactor for combustion of VOCs: Cobalt oxide catalyst on knitted wire gauzes10.1016/j.cej.2012.06.067 ↗
66. Development of optimized Cu-ZSM-5 deNOx catalytic materials both for HC-SCR applications and as FCC catalytic additives10.1016/j.apcata.2007.02.035 ↗
67. A combination of Ag/alumina and Ag modified ZSM-5 to remove NOx and CO during lean conditions10.1016/j.apcatb.2005.10.042 ↗
68. In situ high-temperature ESR characterization of FeZSM-5 and FeSAPO-34 catalysts in flowing mixtures of NO, C3H6, and O210.1023/A:1019002322340 ↗
69. Low temperature propylene SCR of NO by copper alumina catalyst10.1016/j.molcata.2008.05.006 ↗
70. Improvement of NOx reduction efficiency in diesel emission control using nonthermal plasma combined exhaust gas recirculation process10.1109/TIA.2011.2168590 ↗
71. Influence of preparation methods of In2O3/Al2O3 catalyst on selective catalytic reduction of NO by propene in the presence of oxygen10.1007/s10562-005-6506-6 ↗
72. Li, Y., Deeba, M., Dettling, J., Patchett, J., & Roth, S. (2011). Emission treatment system with NSR and SCR catalyst. US Patent 7,919,051 B2.
73. Selective reduction of NOx by methane on co-ferrierites. 1. Reaction and kinetic-studies10.1006/jcat.1994.1356 ↗
74. Reduction of NOx over a combined NSR and SCR system10.1016/j.apcatb.2010.05.019 ↗
75. Recent advances in catalytic deNOx science and technology10.1080/01614940500439891 ↗
76. Recent advances in the selective catalytic reduction of NOx by hydrogen in the presence of oxygen10.1039/c2ee22190j ↗
77. Catalytic performance of Fe-ZSM-5 catalysts for selective catalytic reduction of nitric oxide by ammonia10.1006/jcat.1999.2674 ↗
78. A novel dry process for simultaneous removal of SO2 and NO from flue gas in a powder-particle fluidized bed10.1002/1521-4125(200104)24:4<361::AID-CEAT361>3.0.CO;2-C ↗
79. Thermal deNOx controlling nitrogen oxides emissions by a noncatalytic process10.1021/es00157a002 ↗
80. Optimal design and control of non-adiabatic loop reactors10.1016/j.ces.2009.02.021 ↗
81. Reduction in greenhouse gases emission in a loop reactor adsorber: Simulations and experiments10.1016/j.ces.2010.06.011 ↗
82. The influence of sulfur dioxide and water on the performance of a marine SCR catalyst10.1016/j.apcatb.2011.09.010 ↗
83. Simulation of an industrial-scale process for the SCR of NOx based on the loop reactor concept10.1016/j.cep.2008.04.008 ↗
84. Pd/gamma–Al2O3 monolithic catalysts for NOx reduction with CH4 in excess of O2: Effect of precursor salt10.1016/j.cej.2008.11.050 ↗
85. Experimental and kinetic modeling study of NH3-SCR of NOx on Fe-ZSM-5, Cu-chabazite and combined Fe- and Cu-zeolite monolithic catalysts10.1016/j.ces.2012.09.008 ↗
86. Transient study of the effect of residual cations in Cu/ZSM-5 for SCR of NO by hydrocarbon10.1016/S0009-2509(99)00476-5 ↗
87. A NOx reduction system using ammonia-storage selective catalytic reduction in rich/lean excursions10.1016/j.apcatb.2007.07.018 ↗
88. SCR catalyst-coated fabric filters for simultaneous NOx and high-temperature particulate control10.1002/ep.670140125 ↗
89. Emission control of nitrogen oxides in the oxy-fuel process10.1016/j.pecs.2009.04.002 ↗
90. CO oxidation over structured carriers: A comparison of ceramic foams, honeycombs and beads10.1016/j.ces.2007.04.039 ↗
91. Influence of co-combustion of coal/biomass on the corrosion10.1016/j.fuproc.2012.06.009 ↗
92. Reduction of nitrogen oxides in flue gases10.1016/S0269-7491(98)80099-7 ↗
93. Dry regenerable CuO/gamma-Al2O3 catalyst for simultaneous removal of SOx and NOx from flue gas10.1016/j.apcatb.2012.03.005 ↗
94. SO2 promoted alkali metal doped Ag/Al2O3 catalysts for CH4-SCR of NOx10.1016/j.apcata.2012.05.012 ↗
95. Riekert, L., Kotter, M., & Weyland, F. (1989). Method for the selective elimination of nitrogen oxides from exhaust gases. US Patent 4,867,953.
96. Catalysis for NOx abatement10.1016/j.apenergy.2009.03.022 ↗
97. FTIR in situ mechanistic study of the NH3-NO/NO2 “Fast SCR” reaction over a commercial Fe-ZSM-5 catalyst10.1016/j.cattod.2011.10.036 ↗
98. Effect of ZrO2 addition on de-NOx performance of Cu-ZSM-5 for SCR catalyst10.1016/j.cej.2012.03.027 ↗
99. De-NOx characteristics of a combined system of LNT and SCR catalysts according to hydrothermal aging and sulfur poisoning10.1016/j.cattod.2010.10.010 ↗
100. SO2-induced stability of Ag–alumina catalysts in the SCR of NO with methane10.1016/j.apcatb.2008.09.015 ↗