Catalytic decomposition of sulfur trioxide with metallic catalysts for the is cycle of thermochemical hydrogen production

Tae Ho Kim, Gyeong Taek Gong, Byung Gwon Lee, Kwang Deog Jung, Honggon Kim, Kwan Young Lee, Hee Young Jeon, Chae Ho Shin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Iodine-Sulfur (IS) thermochemical process is one promising method for hydrogen production by thermochemically splitting water at high temperature. It has been focused as a carbon-free hydrogen production process to overcome the global warming problem and positively expected for industrialization. The IS process is a continuous and closed-cycle system consisting of three steps; (i) Bunsen reaction (I2 + SO2 + 2H2O = 2HI + H 2SO4 ; 293-373 K), (ii) HI decomposition (2HI = H 2 I2 ; 473-973 K), (iii) H2SO4 decomposition (H2SO4 = H2O + SO3 → H2O + SO2 + 0.5O2 ; 1073-1173K). Among these, the catalytic decomposition of SO3 to SO2 and O2 is a key reaction using the highest temperature generated from VHTR (very high temperature gas-cooled nuclear reactor). In this work, various metallic catalysts supported on Al2O3 or TiO2 were prepared in various metal contents, and the catalytic activity and thermal durability of each catalyst were compared at the temperature range of 750-950°C in a fixed bed reactor. Concentrated analyses with Fe catalysts were performed since Fe on Al2O3 or TiO2 showed interestingly high performance and thermal resistance.

Original languageEnglish
Title of host publicationAIChE Annual Meeting, Conference Proceedings
Publication statusPublished - 2005 Dec 1
Event05AIChE: 2005 AIChE Annual Meeting and Fall Showcase - Cincinnati, OH, United States
Duration: 2005 Oct 302005 Nov 4

Other

Other05AIChE: 2005 AIChE Annual Meeting and Fall Showcase
CountryUnited States
CityCincinnati, OH
Period05/10/3005/11/4

Fingerprint

Hydrogen production
Sulfur
Iodine
Decomposition
Catalysts
Gas cooled reactors
High temperature reactors
Global warming
Catalyst supports
Heat resistance
Temperature
Catalyst activity
Durability
Carbon
Metals
Water

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Kim, T. H., Gong, G. T., Lee, B. G., Jung, K. D., Kim, H., Lee, K. Y., ... Shin, C. H. (2005). Catalytic decomposition of sulfur trioxide with metallic catalysts for the is cycle of thermochemical hydrogen production. In AIChE Annual Meeting, Conference Proceedings

Catalytic decomposition of sulfur trioxide with metallic catalysts for the is cycle of thermochemical hydrogen production. / Kim, Tae Ho; Gong, Gyeong Taek; Lee, Byung Gwon; Jung, Kwang Deog; Kim, Honggon; Lee, Kwan Young; Jeon, Hee Young; Shin, Chae Ho.

AIChE Annual Meeting, Conference Proceedings. 2005.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Kim, TH, Gong, GT, Lee, BG, Jung, KD, Kim, H, Lee, KY, Jeon, HY & Shin, CH 2005, Catalytic decomposition of sulfur trioxide with metallic catalysts for the is cycle of thermochemical hydrogen production. in AIChE Annual Meeting, Conference Proceedings. 05AIChE: 2005 AIChE Annual Meeting and Fall Showcase, Cincinnati, OH, United States, 05/10/30.
Kim TH, Gong GT, Lee BG, Jung KD, Kim H, Lee KY et al. Catalytic decomposition of sulfur trioxide with metallic catalysts for the is cycle of thermochemical hydrogen production. In AIChE Annual Meeting, Conference Proceedings. 2005
Kim, Tae Ho ; Gong, Gyeong Taek ; Lee, Byung Gwon ; Jung, Kwang Deog ; Kim, Honggon ; Lee, Kwan Young ; Jeon, Hee Young ; Shin, Chae Ho. / Catalytic decomposition of sulfur trioxide with metallic catalysts for the is cycle of thermochemical hydrogen production. AIChE Annual Meeting, Conference Proceedings. 2005.
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