Citation:
REN Cheng-Jun, ZHOU Li-Na, SHANG Hong-Yan, CHEN Yao-Qiang. Pd-MnOx/γ-Al2O3 Monolithic Catalysts Prepared by Impregnation Method and Effect of Different Supports on Ground-Level Ozone Decomposition[J]. Acta Physico-Chimica Sinica,
;2014, 30(5): 957-964.
doi:
10.3866/PKU.WHXB201403101
-
Pd-MnOx/γ-Al2O3 catalysts were prepared by impregnating Pd and MnOx on γ-Al2O3 supports, using an incipient wetness impregnation method, and then coating on a cordierite substrate to obtain monolithic catalysts. The catalysts were characterized using X-ray diffraction (XRD), temperatureprogrammed reduction of H2 (H2-TPR), low-temperature N2 adsorption-desorption measurements, and Xray photoelectron spectroscopy (XPS). The effects of the Pd and MnOx impregnation order on the catalytic activity, redox performance, textural properties, and surface electronic characteristics of the catalysts were studied. The experimental results showed that the activity of the catalyst co-impregnated with Pd and MnOx on γ- Al2O3 was better than that of the catalyst impregnated sequentially with Pd and MnOx. A synergetic effect was observed between Pd and MnOx on the Pd-MnOx/γ-Al2O3 catalysts for ozone decomposition. The effects of various supports on catalytic activity, redox performance, textural properties, and surface electron characteristics of the catalysts were also investigated. The results indicated that the catalytic activities of Pd-MnOx/La-Al2O3 and Pd-MnOx/SiO2 catalysts were the best; ozone conversion reached 82% at 14 ℃ and ozone was completely decomposed at 36 ℃. The activity of the Pd-MnOx/γ-Al2O3 catalyst was second better, but the activity of the Pd-MnOx/Zr-Al2O3 catalyst was poor. The support clearly affects the reducibility of PdO and MnOx. The redox performances of MnOx impregnated on different supports followed the order: Pd-MnOx/SiO2>Pd-MnOx/La-Al2O3>Pd-MnOx/γ-Al2O3>Pd-MnOx/Zr-Al2O3.
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Keywords:
- Palladium,
- Ozone,
- Catalytic decomposition,
- Impregnation method,
- Support
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[1]
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[1]
(1) Gryparis, A.; Forsberg, B.; Katsouyanni, K.; Analitis, A.; Touloumi, G.; Schwartz, J.; Samoli, E.; Medina, S.; Anderson, H. R.; Niciu, E. M. American Journal of Respiratory and Critical Care Medicine 2004, 170, 1080. doi: 10.1164/rccm.200403-333OC
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[2]
(2) Wan, W. X.; Xia, Y. J.; Zhang, H. X.; Wang, J.; Wang, X. K. Acta Ecologica Sinica 2013, 33 (4), 1098. [万五星, 夏亚军, 张红星, 王娇, 王效科. 生态学报, 2013, 33 (4), 1098.] doi: 10.5846/stxb
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[3]
(3) Karlsson, P. E.; Pleijel, H.; Belhaj, M.; Danielsson, H.; Dahlin, B.; Andersson, M.; Haneeon, M.; Munthe, J.; Grennfelt, P. AMBIO 2005, 34, 32.
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[4]
(4) Weschler, C. J. Indoor Air 2000, 10, 269. doi: 10.1034/j.1600-0668.2000.010004269.x
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[5]
(5) Dhandapani, B.; Oyama, S. T. Appl. Catal. B 1997, 11, 129. doi: 10.1016/S0926-3373(96)00044-6
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[6]
(6) Japan Air Cleaning Association. Air Cleaning Handbook; Ohm Press: Tokyo, 1981; p178
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[7]
(7) Zhang, B.; Shi, R.; Zhang, P. Y.; Xu, J. H. Rare Metal Mat. Eng. 2010, 39 (4), 692. [张博, 史蕊, 张彭义, 徐九华. 稀有金属材料与工程, 2010, 39 (4), 692.]
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[8]
(8) Zhang, B.; Zhang, P. Y.; Shi, R.; Wang, H. J. Chin. J. Catal. 2009, 30 (3), 235. [张博, 张彭义, 史蕊, 王化军. 催化学报, 2009, 30 (3), 235.]
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[9]
(9) Yu, Q.W.; Zhao, M.; Liu, Z. M.; Zhang, X. Y.; Zheng, L. M.; Chen, Y. Q.; ng, M. C. Chin. J. Catal. 2009, 30 (1), 1. [余全伟, 赵明, 刘志敏, 张晓玉, 郑灵敏, 陈耀强, 龚茂初. 催化学报, 2009, 30 (1), 1.] doi: 10.1016/S1872-2067(08)60082-0
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[10]
(10) Pan, H.; Zhou, L. N.; Zhu, Y.; Peng, N.; ng, M. C.; Chen, Y. Q. Chin. J. Catal. 2011, 32 (6), 1040. [潘浩, 周丽娜, 朱艺, 彭娜, 龚茂初, 陈耀强. 催化学报, 2011, 32 (6), 1040.]
-
[11]
(11) Zhou, L. N.; Chen, Y. Q.; Ren, C. J.; ng, M. C. Chin. J. Inorg. Chem. 2013, 29 (11), 2363. [周丽娜, 陈耀强, 任成军, 龚茂初. 无机化学学报, 2013, 29 (11), 2363.]
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[12]
(12) Thompson, A. M. Science 1992, 256, 1157. doi: 10.1126/science.256.5060.1157
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[13]
(13) Russell, A.; Milford. J.; Bergin, M. S.; McBride, S.; McNair, L.; Yang, Y.; Stockwell, W. R.; Croes, B. Science 1995, 269, 491. doi: 10.1126/science.269.5223.491
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[14]
(14) Yu, L. P.; Jia, J. J. J. Shandong Univ. Sci. Technol. Nat. Sci. 2001, 20 (4), 111. [于林平, 贾建军. 山东科技大学学报(自然科学版), 2001, 20 (4), 111.]
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[15]
(15) Sadao Terui, H.; Yoshiyuki Yokota, S. Catalyst and Method of Preparing the Catalyst. US Patent, 5187137, 1993-02-16.
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[16]
(16) Kameya, T.; Urano, K. J. Environ. Eng. 2002, 128, 286. doi: 10.1061/(ASCE)0733-9372(2002)128:3(286)
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[17]
(17) Wu, M. C.; Kelly, N. A. Appl. Catal. B 1998, 18, 93. doi: 10.1016/S0926-3373(98)00028-9
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[18]
(18) Yao, Y. L.; Fang, R. M.; Shi, Z. H.; ng, M. C.; Chen, Y. Q. Chin. J. Catal. 2011, 32 (4), 589. [姚艳玲, 方瑞梅, 史忠华, 龚茂初, 陈耀强. 催化学报, 2011, 32 (4), 589.]
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[19]
(19) Rezaei, E.; Soltan, J.; Chen, N.; Lin, J. R. Chem. Eng. J. 2013, 214, 219. doi: 10.1016/j.cej.2012.10.044
-
[20]
(20) Xu, G. P.; Zhu, Y. X.; Ma, J.; Yan, H. J.; Xie, Y. C. Stud. Surf. Sci. Catal. 1997, 11, 333.
-
[21]
(21) Ren, C. J.; Qiu, W.; Chen, Y. Q. Sep. Purif. Technol. 2013, 107, 264. doi: 10.1016/j.seppur.2013.01.037
-
[22]
(22) Qiu, W.; Ren, C. J.; ng, M. C.; Hou, Y. Z.; Chen, Y. Q. Acta Phys. -Chim. Sin. 2011, 27, 1487. [仇伟, 任成军, 龚茂初, 侯云泽, 陈耀强. 物理化学学报, 2011, 27, 1487.] doi: 10.3866/PKU.WHXB20110621
-
[23]
(23) Santos, V. P.; Pereira, M. F. R.; Órfa? o, J. J. M.; Figueiredo, J. L. Appl. Catal. B 2010, 99, 353. doi: 10.1016/j.apcatb.2010.07.007
-
[24]
(24) Wei, Y. J.; Yan, L. Y.; Wang, C. Z.; Xu, X. G.; Wu, F.; Chen, G. J. Phys. Chem. B 2004, 108, 18547. doi: 10.1021/jp0479522
-
[25]
(25) O′Shea, V. A. D. P.; Álvarez-Galván, M. C.; Fierro, J. L. G.; Arias, P. L. Appl. Catal. B 2005, 57, 191. doi: 10.1016/j.apcatb.2004.11.001
-
[26]
(26) Lin, J. J.; Kawai, A.; Nakajima, T. Appl. Catal. B 2002, 39, 157. doi: 10.1016/S0926-3373(02)00081-4
-
[27]
(27) Einaga, H.; Harada, M.; Futamura, S. Chem. Phys. Lett. 2005, 408, 377. doi: 10.1016/j.cplett.2005.04.061
-
[28]
(28) Kumar, N.; Konova, P.; Naydenov, A.; Salmi, T.; Murzin, D. Y.; Heikillä, T.; Lehto, V. P. Catal. Today 2007, 119, 342. doi: 10.1016/j.cattod.2006.08.048
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