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Received July 8, 2003
Accepted October 6, 2003
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Selective Oxidation of H2S to Ammonium Thiosulfate and Elemental Sulfur Using Mixtures of V-Bi-O and Sb2O4
Department of Chemical Engineering, Pusan National University, Busan 609-735, Korea 1Department of Chemical Engineering, Pukyung National University, Busan 608-739, Korea
dwpark@pusan.ac.kr
Korean Journal of Chemical Engineering, January 2004, 21(1), 104-109(6), 10.1007/BF02705386
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Abstract
The selective oxidation of hydrogen sulfide in the presence of excess water and ammonia was investigated by using vanadium-bismuth based mixed oxide catalysts. Synergistic effect on catalytic activity was observed for the mechanical mixtures of V-Bi-O and Sb2O4. Temperature programmed oxidation (TPO), X-ray photoelectron spectroscopy (XPS), and two separated bed reactivity test results supported the role of Sb2O4 for reoxidizing the reduced VBi-O during the reaction.
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Li KT, Huang MY, Cheng WD, Ind. Eng. Chem. Res., 35(2), 621 (1996)
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Park DW, Chun SW, Jang JY, Kim HS, Woo HC, Chung JS, Catal. Today, 44(1-4), 73 (1998)
Park DW, Chun SW, Kim HS, Woo HC, Chung JS, Stud. Surf. Sci. Catal., 121, 457 (1999)
Shin MY, Park DW, Chung JS, Catal. Today, 63(2-4), 405 (2000)
Shin MY, Park DW, Chung JS, Appl. Catal. B: Environ., 30(3-4), 409 (2001)
Terode RJAM, vandenBrink PJ, Visser LM, Dillen AJ, Geus JW, Catal. Today, 17, 217 (1993)
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VanNisselrooy PFMT, Lagas JA, Catal. Today, 16, 263 (1993)
Weng LT, Delmon B, Appl. Catal. A: Gen., 81, 141 (1992)
Zey A, White S, Johnson D, Chem. Eng. Prog., 76, 10 (1980)
