Hydrothermal treatment of metallic-monolith catalyst support with selfgrowing porous anodic-alumina film

doi:10.1016/j.cjche.2020.01.012

摘要/Abstract

摘要： Metallic-monolith catalyst support with self-growing porous anodic alumina (PAA) film was prepared by anodizing Al plate. The effect of hydrothermal treatment (HTT) on the crystalline state and textural properties of PAA film was investigated by XRD, BET, SEM and TG. The HTT treatment above 50℃ and the subsequent calcination above 300℃ could convert the amorphous skeleton alumina into γ-alumina and increase the specific surface area (S_BET). However, SEM images showed the HTT modification was a non-uniform process along the thickness of PAA film. The promotion effect of HTT on S_BET was non-linear, and the slope of S_BET gradually decreased with the HTT temperature or time increased. The limited HTT effect should be attributed to a changed pore structure caused by an unfavorable pore sealing limitation. Pore widening treatment (PWT) before HTT could break the pore sealing limitation, because of the reduced internal diffusion resistance of hydrothermal reaction. The synergistic combination of PWT and HTT developed a PAA support with a large S_BET comparable to commercial γ-alumina. In the catalytic combustion of toluene, the Pt-based catalyst prepared by using the PWT and HTT comodified PAA support gave higher Pt dispersion and more favorable catalytic activity than that treated by HTT alone. The presence of a bimodal pore structure was suggested to be a decisive reason.

关键词: Alumina, Catalyst support, Hydrothermal, Pore widening treatment, Anodization

Abstract: Metallic-monolith catalyst support with self-growing porous anodic alumina (PAA) film was prepared by anodizing Al plate. The effect of hydrothermal treatment (HTT) on the crystalline state and textural properties of PAA film was investigated by XRD, BET, SEM and TG. The HTT treatment above 50℃ and the subsequent calcination above 300℃ could convert the amorphous skeleton alumina into γ-alumina and increase the specific surface area (S_BET). However, SEM images showed the HTT modification was a non-uniform process along the thickness of PAA film. The promotion effect of HTT on S_BET was non-linear, and the slope of S_BET gradually decreased with the HTT temperature or time increased. The limited HTT effect should be attributed to a changed pore structure caused by an unfavorable pore sealing limitation. Pore widening treatment (PWT) before HTT could break the pore sealing limitation, because of the reduced internal diffusion resistance of hydrothermal reaction. The synergistic combination of PWT and HTT developed a PAA support with a large S_BET comparable to commercial γ-alumina. In the catalytic combustion of toluene, the Pt-based catalyst prepared by using the PWT and HTT comodified PAA support gave higher Pt dispersion and more favorable catalytic activity than that treated by HTT alone. The presence of a bimodal pore structure was suggested to be a decisive reason.

Key words: Alumina, Catalyst support, Hydrothermal, Pore widening treatment, Anodization

Chuanqi Zhang, Yuanjing Pu, Feng Wang, Hecheng Ren, Hua Ma, Yu Guo. Hydrothermal treatment of metallic-monolith catalyst support with selfgrowing porous anodic-alumina film[J]. 中国化学工程学报, 2020, 28(5): 1311-1319.

参考文献

[1] C. Fukuhara, A. Igarashi, Characterization of performance of the wall-type reactor with plate-fin type nickel catalyst prepared by electroless plating, for methanol decomposition, J. Chem. Eng. Jpn 37(2004) 415-421.
[2] R.M. Heck, R.J. Farrauto, Automobile exhaust catalysts, Appl. Catal. A Gen. 221(2001) 443-457.
[3] T.B. Shoynkhorova, P.V. Snytnikov, P.A. Simonov, D.I. Potemkin, V.N. Rogozhnikov, E.Y. Gerasimov, A.N. Salanov, V.D. Belyaev, V.A. Sobyanin, From alumina modified Rh/Ce_0.75Zr_0.25O_2-δ catalyst towards composite Rh/Ce_0.75Zr_0.25O_2-δ-η-Al₂O₃/FeCrAl catalytic system for diesel conversion to syngas, Appl. Catal. B Environ. 245(2019) 40-48.
[4] S. Katheria, G. Deo, D. Kunzru, Rh-Ni/MgAl₂O₄ catalyst for steam reforming of methane:effect of Rh doping, calcination temperature and its application on metal monoliths, Appl. Catal. A:Gen. 570(2019) 308-318.
[5] L.P. Han, M. Gao, Ch. Feng, L.Y. Shi, D.S. Zhang, Fe₂O₃-CeO₂@Al₂O₃ Nanoarrays on Al-mesh as SO₂-tolerant monolith catalysts for NO_x reduction by NH₃, Environ. Sci. Technol. 53(2019) 5946-5956.
[6] L.P. Han, M. Gao, J.Y. Hasegawa, Sh.X. Li, Y.J. Shen, H.R. Li, L.Y. Shi, D.S. Zhang, SO₂-tolerant selective catalytic reduction of NO_x over Meso-TiO₂@Fe₂O₃@Al₂O₃ metalbased monolith catalysts, Environ. Sci. Technol. 53(11) (2019) 6462-6473.
[7] L.P. Han, Ch.Zh. Wang, G.F. Zhao, Y. Liu, Y. Lu, Microstructured Al-fiber@mesoAl₂O₃@Fe-Mn-K Fischer-Tropsch catalyst for lower olefins, AIChE J. 62(2016) 742-752.
[8] R.R. Hong, J.T. Feng, Y.F. He, D.Q. Li, Controllable preparation and catalytic performance of Pd/anodic alumina oxide@Al catalyst for hydrogenation of ethylanthraquinone, Chem. Eng. Sci. 135(2015) 274-284.
[9] E.L. Reddy, H.C. Lee, D.H. Kim, Steam reforming of methanol over structured catalysts prepared by electroless deposition of Cu and Zn on anodically oxidized alumina, Int. J. Hydrog. Energy 40(2015) 2509-2517.
[10] N.N. Qiao, Y.L. Nong, N. Liu, Y. Liang, Heterogeneous catalyst of porous anodic aluminum oxide with Al substrate supported metal nanoparticles, Mater. Chem. Phys. 225(2019) 458-463.
[11] L. Zhang, H.L. Chu, H. Qu, Q. Zhang, H. Xu, J. Cao, Zh.Y. Tang, J. Xuan, An investigation of efficient microstructured reactor with monolith Co/anodic γ-Al₂O₃/Al catalyst in Fischer-Tropsch synthesis, Int. J. Hydrog. Energy 43(2018) 3077-3086.
[12] Z.B. Rui, Ch.Y. Chen, Y.B. Lu, H.B. Ji, Anodic alumina supported Pt catalyst for total oxidation of trace toluene, Chinese J. Chem. Eng. 22(2014) 882-887.
[13] H. Kameyama, Heat transfer material with porous alumina layer, Suiso Energy Shisutemu 20(1995) 16-23(in Japanese).
[14] L. Zhou, Y. Guo, M. Yagi, M. Sakurai, H. Kameyama, Investigation of a novel porous anodic alumina plate for methane steam reforming:hydrothermal stability, electrical heating possibility and reforming reactivity, Int. J. Hydrog. Energy 34(2009) 844-858.
[15] Y. Guo, L. Zhou, H. Kameyama, Thermal and hydrothermal stability of a metal monolithic anodic alumina support for steam reforming of methane, Chem. Eng. J. 168(2011) 341-350.
[16] L. Zhou, Y. Guo, J.-M. Basset, H. Kameyama, Structured Ni catalysts on porous anodic alumina membranes for methane dry reforming:NiAl₂O₄ formation and characterization, Chem. Commun. 51(2015) 12044-12047.
[17] E. Dietzsch, P. Claus, D. Hönicke, The partial gas-phase hydrogenation of benzene to cyclohexene on supported and coated ruthenium catalysts, Top. Catal. 10(2000) 99-106.
[18] M.M. Kandy, V.G. Gaikar, Photocatalytic reduction of CO₂ using CdS nanorods on porous anodic alumina support, Mater. Res. Bull. 102(2018) 440-449.
[19] M.J.F. Sánchez, D.E. Boldrini, G.M. Tonetto, D.E. Damiani, Palladium catalyst on anodized aluminum monoliths for the partial hydrogenation of vegetable oil, Chem. Eng. J. 167(2011) 355-361.
[20] D.E. Boldrini, G.M. Tonetto, D.E. Damiani, Experimental study of the deactivation of Pd on anodized aluminum monoliths during the partial hydrogenation of vegetable oil, Chem. Eng. J. 270(2015) 378-384.
[21] Q. Zhang, Zh.R. Jiang, D.M. Sun, D.Y. Han, Z.B. Zhu, Effect of crystalline state of anodized porous Al₂O₃/Al as supports by hydration, J. Inorg. Mater. 27(2012) 693-698. (in Chinese).
[22] Q. Zhang, J.J. Xu, F.Y. Fan, D.M. Sun, G.M. Xu, S. Zhang, Z.B. Zhu, Application of porous anodic alumina monolith catalyst in steam reforming of dimethyl ether:Cu/γ-Al₂O₃/Al catalyst degradation behaviors and catalytic activity improvement by pre-competition impregnation method, Fuel Process. Technol. 119(2014) 52-59.
[23] Y. Guo, M. Sakurai, H. Kameyama, A. Matsuyama, Y. Kudoh, Preparation of alumite support and preliminary activity investigation for NO removal in SCR-HC over alumite catalyst, J. Chem. Eng. Jpn 36(2003) 1470-1479.
[24] R. Kousar, D.H. Kim, B.-Y. Yu, H.P. Ha, S.H. Kim, J.Y. Byun, Dimethyl ether (DME) reforming by microreactor using Cu and Cr as active components over γ-alumina, Appl. Catal. A Gen. 423-424(2012) 176-184.
[25] Ch.H. Du, Y.F. He, X.M. Shi, Zh. Ma, Y.N. Qin, Preparation of a new solid acid SO₄^2-/Al₂O₃-Al and its catalytic esterification activity, Petrochemical Technology 32(2003) 247-249(in Chinese).
[26] F.Y. Fan, Q. Zhang, J.J. Xu, Q. Ye, H. Kameyama, Z.B. Zhu, Catalytic behavior investigation of a novel anodized Al₂O₃/Al monolith in hydrolysis of dimethyl ether, Catal. Today 216(2013) 194-199.
[27] F. Chen, F. Wang, Q. Li, C.Y. Cao, X. Zhang, H. Ma, Y. Guo, Effect of support (Degussa P25 TiO₂, anatase TiO₂, γ-Al₂O₃, and AlOOH) of Pt-based catalysts on the formaldehyde oxidation at room temperature, Catal. Commun. 99(2017) 39-42.
[28] Y. Liu, L. Jia, Y. Lin, Y. Zhao, L. Sun, H. Ma, H. Kameyama, M. Sakurai, Y. Guo, Catalytic combustion of toluene over Cu-Mn mixed oxide catalyst, J. Chem. Eng. Jpn 51(2018) 769-777.
[29] E. Calvet, P. Boivinet, M. Noel, H. Thibon, A. Maillard, R. Tertian, Contribution a letude des gels dalumine, Bull. Soc. Chim. France 20(1953) 99-108.
[30] S. Tettenhorst, D.A. Hofmann, Crystal chemistry of boehmite, Clay Clay Miner. 28(1980) 373-380.
[31] H.F. Zhu, Catalyst Carrier Preparation and Application Technology, Petroleum Industry Press, Beijing, 2014(in Chinese).
[32] M.H. Zhang, G. Ye, G.H. Li, F. Yu, Study on the difference between boehmite and pseudo-boehmite, Act a Petrolei Sinica (Petroleum Processing Section) 15(1999) 29-32(in Chinese).
[33] J. Martín, C.V. Manzano, M. Martín-González, In-depth study of self-ordered porous alumina in the 140-400 nm pore diameter range, Micropor. Mesopor. Mat. 151(2012) 311-316.
[34] R.J. Chen, O.Y. Gu, Y.T. Liao, H.B. Li, S. Makoto, L. Zhou, H. Ma, Y. Guo, Preparation of non-coated metallic monolith catalyst support by anodization, Journal of NanJing Tech University (Natural Science Edition) 39(2017) 26-33. (in Chinese).
[35] L. Jia, Y. Guo, Hideo Kameyama, Synergistic effect of copper and cobalt in Cu-Co bulk oxide catalyst for catalytic oxidation of volatile organic compounds, J. Chem. Eng. Jpn 45(2012) 590-596.
[36] L. Shi, G.H. Yang, K. Tao, Y. Yoneyama, Y.Sh. Tan, N. Tsubaki, An introduction of CO₂ conversion by dry reforming with methane and new route of low-temperature methanol synthesis, Accounts Chem. Res. 46(2013) 1838-1847.