Application Research on Pd-Co-Ti Catalyst for Purifying CO in Flue Gas of Hot-blast Stove in Steel Rolling Mill
The Pd-Co-Ti catalyst was successfully prepared by the method of impregnation-precipitation-ball milling. The structure and redox properties of Pd-Co-Ti catalyst was investigated by N22 desorption, X-ray powder diffraction (XRD), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and H22-TPR. The results show that the Pd-Co-Ti catalyst has a large specific surface area and a rich pore structure, and there are Co33O44 and anatase TiO22 crystals in the catalyst. The synergistic effect of Pd and Co improves the redox ability of Pd-Co-Ti catalyst. The catalyst is used to treat CO in the flue gas of rolling mills. It runs for 168 hours at a space velocity of 30,000 cm33/(g⋅⋅h) and a temperature of 280∘∘C, and the CO removal rate is basically maintained at more than 90%. The ratio of inlet CO content and O22 content affects the catalyst CO removal efficiency. When the ratio is greater than 0.5, the CO removal efficiency has a downward trend. The results of this study are of great significance to the practical application of CO oxidation technology.
H.U. Lee, J.H. Choi, Y.K. Yeo, H.G. Song, B.G. Na. Effect of Evacuation and Rinse Conditions on Performance in PSA Process for CO2 Recovery. Korean Chemical Engineering Research, 38, 809–816, 2000.
L.P. Oommen, K.G. Narayanappa, Assimilative Capacity approach for air pollution control in automotive engines through magnetic field-assisted combustion of hydrocarbons. Environmental Science Pollution Research, 1–11,2021.
S. Dey and D.G. Chandra. Controlling carbon monoxide emissions from automobile vehicle exhaust using copper oxide catalysts in a catalytic converter. Materials Today Chemistry, 17, 2020.
J.J. Liu, X. Fu and Y.J. Xu. Progress on carbon monoxide removal using ionic liquids. CIESC Journal, 71(01): 138–147, 2020.
S. Mahajan and S. Jagtap. Metal-oxide semiconductors for carbon monoxide (CO) gas sensing: A review. Applied Materials Today, 18, 2020.
F.I. Khan and A.K. Ghoshal. Volatile organic compounds control: Best possible techniques. Chemical Engineering World, 34(12): 103–124, 1999.
J. Saavedra, T. Whittaker, Z.F. Chen, C.J. Pursell, R.M. Rioux and B.D. Chandler. Controlling activity and selectivity using water in the Au-catalysed preferential oxidation of CO in H2. Natur Chemistry, 8, 584–589, 2016.
S. Dey and G.C. Dhal. Property and structure of various platinum catalysts for low-temperature carbon monoxide oxidations. Materials Today Chemistry, 16, 100228, 2020.
B. Zhang, H. Asakura and N. Yan. Atomically dispersed rhodium on self-assembled phosphotungstic acid: Structural features and catalytic CO oxidation properties. Industrial & Engineering Chemistry Research., 56(13): 3578–3587, 2017.
M.J. Hülsey, B. Zhang, Z.R. Ma, H. Asakura, D.A. Do, W. Chen, T. Tanaka, P. Zhang, Z.L. Wu and N. Yan. In situ spectroscopy-guided engineering of rhodium single-atom catalysts for CO oxidation. Nature Communications, 10(1): 1330, 2019.
C.Q. Li, Y. Yang, W. Ren, J. Wang, T.Y. Zhu and W.Q. Xu. Effect of Ce doping on catalytic performance of Cu/TiO2 for CO oxidation. Catalysis. Letters., 150: 2045–2055, 2020.
X. Jin, X.L. Feng, D.P. Liu, Y.T. Su, Z. Zhang and Y. Zhang. Auto-redox Strategy for the Synthesis of Co3O4/CeO2 Nanocomposites and Their Structural Optimization towards catalytic CO oxidation. Chemical Journal of Chinese Universities, 41(04):652–660, 2020.
X. Liu, J.C. Huang and X.M. Duan. Cobalt anchored CN sheet boosts the performance of electrochemical CO oxidation. Chinese Phys. B, 30(6), 2021. (DOI: 10.1088/1674-1056/abfbd)
R. Molavi, R. Safaiee, M.H. Sheikhi and N. Hassani. Theoretical perspective on CO oxidation over small cobalt oxide clusters. Chemical Physics Letters, 767, 2021. (DOI: 10.1016/j.cplett.2021.138361)
Q.G. Jiang, M. Huang, Y.S. Qian, Y.C. Miao and Z.M. Ao. Excellent sulfur and water resistance for CO oxidation on Pt single-atom-catalyst supported by defective graphene: The effect of vacancy type. Applied Surface Science, 566, 2021. (DOI: 10.1016/j.apsusc.2021.150624)
P. Thormahlen, E. Eridell and N. Cruise. The influence of CO2, C3H6, NO, H2, H2O or SO2 on the low-temperature oxidation of CO on a cobalt-aluminate spinel catalyst. Applied Catalysis B: Environmental, 31(1):1–12, 2001.
K. Taira, K. Nakao, K. Suzuki and H. Einaga. SOx Tolerant Pt/TiO2 Catalysts for CO Oxidation and the Effect of TiO2 Supports on Catalytic Activity. Environmental Science & Technology, 50(17): 9773–9780, 2016.
R. Shi, J. Li. Effect of addition WO3 to cerium-cobalt catalysts on carbon monoxide catalytic oxidation performance. Industrial Catalysis, 26(3): 39–44, 2018.
M.T. Zhu, J.Y. Xing, Y.M. Li, M.F. Luo and J.Q. Lu. Effect support calcination temperature on CO oxidation over Pt/FeOx catalysts and their resistance to H2O and CO2. Journal of Zhejiang University Science A, 44(2): 171–179, 2021.
H.H. Li, J.D. Zhang, Y.X. Cao, F. Li, C.Y. Liu, Y.W. Song, J.J. Hu and Y. Wang. Enhanced activity and SO2 resistance of Co-modified CeO2-TiO2 catalyst prepared by facile co-precipitation for elemental mercury removal in flue gas. Applied Organometallic Chemistry, 34(4), 2020.