Photocatalytic Characteristics on Sintered Glass and Micro Reactor

Byung-Chul Choi; Li-Hua Xu; Hyung-Taek Kim; Detlef W. Bahnemann

Journal of Industrial and Engineering Chemistry, Vol.12, No.5, 663-672, September, 2006

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Photocatalytic Characteristics on Sintered Glass and Micro Reactor

Byung-Chul Choi, Li-Hua Xu¹, Hyung-Taek Kim^{1, †}, and Detlef W. Bahnemann²

Environmental Chemistry Examination Division, Korea Intellectual Property Office, Daejeon 302-701, Korea
¹Division of Energy Systems Research, Ajou University, Suwon, 443-749, Korea
²Institut f"ur Technische Chemie, University of Hannover, Callinstrasse 3, D-30167 Hannover, Germany

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In this study, the photocatalytic degradation characteristics of D-glucose as a model compound on a sintered glass reactor (GR) and a microreactor (MR) were examined under various experimental conditions. To apply TiO2 coatings onto the GR and MR, a TiO2 solution was synthesized by hydrolysis of titanium oxysulfate. An increase in the feed rate was accompanied by an increase in the degradation rate of the D-glucose solution over the GR and MR. Also, the reaction rate constant and Langmuir adsorption coefficient were calculated under various experimental conditions. To evaluate the effect of mass transfer on the different reactors, the Damkohler numbers of each reactor were calculated; the value of the GR was ca. 10 times higher than that of the MR. Results of reaction rate analysis illustrated that the complete control by the catalyst surface reaction. To investigate the effect of surface area, κvalues of both reactors were calculated and compared with other conventional photocatalytic reactors. When the TiO2 loading quantity on the coated surface was not considered, the GR efficiency was higher than that of the MR. However, the TiO2 loading on the coated MR surface was ca. 300 times lower than that of the GR.

Keywords:TiO2;titanium oxysulfate;sintered glass;microreactor;photocatalysis;glucose

[References]

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Mills A, Lee SK, J. Photochem. Photobiol. A-Chem., 152, 233 (2002)
Mills A, Hill G, Bhopal S, Parkin IP, O’Neil SA, J. Photochem. Photobiol. A-Chem., 160, 185 (2003)
Blake DN, Bibliography of work on the heterogeneous photocatalytic removal of hazardous compounds from water and air, Document NREL/T P-473-20300, National Renewable Energy Laboratory and DOE, Golden Co, USA, (1995)
Schiavello M, Photoelectrochemistry, Photocatalysis and Photoreactors: Fundamentals and Developments (part III), D. Reidel Publishing, Holland (1985)
Kraeutler B, Brad B, J. Am. Chem. Soc., 19, 5985 (1978)
Dunn W, Wilboun K, Fan F, Brad A, J. Phys. Chem., 84, 3207 (1980)
Serpone N, Borgerello E, Harris R, Cahill P, Borgarello M, Pelizzetti E, Solar Energy Material, 14, 121 (1986)
Hermann JM, Pichat P, J. Chem. Soc.-Faraday Trans. I, 76, 1138 (1980)
Ollis DF, Hsiao C, Budiman L, Lee CL, J. Catal., 88, 89 (1984)
Augugliaro V, Palmisano L, Sclafani A, Minero C, Pelizzetti E, Toxical. Environ. Chem., 16, 89 (1988)
Barbeni M, Pramauro E, Pelzzetti E, Borgarell E, Gratzel M, Serpone N, Chemisorpe, 14, 195 (1985)
Ray AK, Beenackers AACM, AIChE J., 44, 477 (1998)
Hidalgo MC, Sakthivel S, Bahnemann D, Appl. Catal. A: Gen., 277(1-2), 183 (2004)
Degussa Technical Bulletin, Pigments, 56, 13 (1990)
Kaneko M, Okura I, Photocatalysis: Science and Technology, Kodansha, Japan (2002), chapter 1
Brinker CJ, Scherer GW, Sol-Gel Science: Physical and Chemistry of Sol-Gel Processing, Academic Press, Boston (1990), chapter 13
Mills A, Wang J, Photochem. Photobiol. A: Chem., 118, 53 (1998)
Ganley JC, Seebauer EG, Masel RI, J. Power Sources, 137(1), 53 (2004)
Wolfrum EJ, Huang J, Blake DM, Maness PC, Huang Z, Fiest J, Environ. Sci. Technol., 36, 3412 (2002)
Muneer M, Theurich J, Bahnemann D, J. Photochem. Photobiol. A-Chem., 143, 213 (2001)
Lindner M, Theurich J, Bahnemann D, Water Sci. Technol., 35, 79 (1997)
Ollis DF, Environ. Sci. Technol., 19, 480 (1985)
Theurich J, Lindner M, Bahnemann DW, Langmuir, 12(26), 6368 (1996)
Serpone N, Pelizzetti E, Photocatalysis- Fundamental and Applications, Wiley, New York, 603 (1989)
Commenge JM, Falk L, Corriou JP, Matlosz M, IMRET 5: Proceedings of the Fifth International Conference on Microreaction Technology, Springer, Berlin, 131 (2002)
Gorges R, Meyer S, Kreisel G, J. Photochem. Photobiol. A-Chem., 167, 99 (2004)
Turchi CS, Ollis DF, J. Phys. Chem., 92, 6853 (1988)
VDI Wrmeatlas, 6th Edn., VDI Verlag, Dusseldorf (1991)
Washburn EW, West CJ, Dorsey NE, Bichowsky FR, Klemenc A, International Critical Tables of Numerical Data, Physics, Chemistry and Technology, McGraw-Hill, New York, 2, 347 (1926)
Ray AK, Beenackers AACM, AIChE J., 44, 483 (1998)
Mills A, LeHunte S, J. Photochem. Photobiol. A-Chem., 108, 1 (1997)
Lee SK, Mills A, J. Ind. Eng. Chem., 10(2), 173 (2004)

[1] Hoffmann MR, Martin ST, Choi WY, Bahnemann DW, Chem. Rev., 95(1), 69 (1995)

[2] Mills A, Lee SK, J. Photochem. Photobiol. A-Chem., 152, 233 (2002)

[3] Mills A, Hill G, Bhopal S, Parkin IP, O’Neil SA, J. Photochem. Photobiol. A-Chem., 160, 185 (2003)

[4] Blake DN, Bibliography of work on the heterogeneous photocatalytic removal of hazardous compounds from water and air, Document NREL/T P-473-20300, National Renewable Energy Laboratory and DOE, Golden Co, USA, (1995)

[5] Schiavello M, Photoelectrochemistry, Photocatalysis and Photoreactors: Fundamentals and Developments (part III), D. Reidel Publishing, Holland (1985)

[6] Kraeutler B, Brad B, J. Am. Chem. Soc., 19, 5985 (1978)

[7] Dunn W, Wilboun K, Fan F, Brad A, J. Phys. Chem., 84, 3207 (1980)

[8] Serpone N, Borgerello E, Harris R, Cahill P, Borgarello M, Pelizzetti E, Solar Energy Material, 14, 121 (1986)

[9] Hermann JM, Pichat P, J. Chem. Soc.-Faraday Trans. I, 76, 1138 (1980)

[10] Ollis DF, Hsiao C, Budiman L, Lee CL, J. Catal., 88, 89 (1984)

[11] Augugliaro V, Palmisano L, Sclafani A, Minero C, Pelizzetti E, Toxical. Environ. Chem., 16, 89 (1988)

[12] Barbeni M, Pramauro E, Pelzzetti E, Borgarell E, Gratzel M, Serpone N, Chemisorpe, 14, 195 (1985)

[13] Ray AK, Beenackers AACM, AIChE J., 44, 477 (1998)

[14] Hidalgo MC, Sakthivel S, Bahnemann D, Appl. Catal. A: Gen., 277(1-2), 183 (2004)

[15] Degussa Technical Bulletin, Pigments, 56, 13 (1990)

[16] Kaneko M, Okura I, Photocatalysis: Science and Technology, Kodansha, Japan (2002), chapter 1

[17] Brinker CJ, Scherer GW, Sol-Gel Science: Physical and Chemistry of Sol-Gel Processing, Academic Press, Boston (1990), chapter 13

[18] Mills A, Wang J, Photochem. Photobiol. A: Chem., 118, 53 (1998)

[19] Ganley JC, Seebauer EG, Masel RI, J. Power Sources, 137(1), 53 (2004)

[20] Wolfrum EJ, Huang J, Blake DM, Maness PC, Huang Z, Fiest J, Environ. Sci. Technol., 36, 3412 (2002)

[21] Muneer M, Theurich J, Bahnemann D, J. Photochem. Photobiol. A-Chem., 143, 213 (2001)

[22] Lindner M, Theurich J, Bahnemann D, Water Sci. Technol., 35, 79 (1997)

[23] Ollis DF, Environ. Sci. Technol., 19, 480 (1985)

[24] Theurich J, Lindner M, Bahnemann DW, Langmuir, 12(26), 6368 (1996)

[25] Serpone N, Pelizzetti E, Photocatalysis- Fundamental and Applications, Wiley, New York, 603 (1989)

[26] Commenge JM, Falk L, Corriou JP, Matlosz M, IMRET 5: Proceedings of the Fifth International Conference on Microreaction Technology, Springer, Berlin, 131 (2002)

[27] Gorges R, Meyer S, Kreisel G, J. Photochem. Photobiol. A-Chem., 167, 99 (2004)

[28] Turchi CS, Ollis DF, J. Phys. Chem., 92, 6853 (1988)

[29] VDI Wrmeatlas, 6th Edn., VDI Verlag, Dusseldorf (1991)

[30] Washburn EW, West CJ, Dorsey NE, Bichowsky FR, Klemenc A, International Critical Tables of Numerical Data, Physics, Chemistry and Technology, McGraw-Hill, New York, 2, 347 (1926)

[31] Ray AK, Beenackers AACM, AIChE J., 44, 483 (1998)

[32] Mills A, LeHunte S, J. Photochem. Photobiol. A-Chem., 108, 1 (1997)

[33] Lee SK, Mills A, J. Ind. Eng. Chem., 10(2), 173 (2004)