Development of Fe-based Catalysts for Purification of Coke Oven Gases

Z.R.Ismagilov1, O.Yu.Podyacheva1, L.T.Tzykoza1, M.Sakashita2, N.V.Shikina1, V.A.Ushakov1, V.V.Kuznetsov1, Sh.Tamura2, K.Fujimoto3

1Boreskov Institute of Catalysis, prosp. ak. Lavrentieva, 5, 630090 Novosibirsk, Russia

2Japan Technical Information Service, Sogo-kojimachi No 3, Bldg., 1-6 Kojimachi, Chiyoda-ku, 1020083 Tokyo, Japan

3Nippon Steel Co., 20-1 Shintomi, Futtsu-city, Chiba, 2938511, Japan

Abstract

Fe-based catalysts of different geometry are developed for the purification of coke oven gases: bulk, supported on alumina and supported on alumina silicate monoliths. Adsorption and decomposition of H2S on the catalysts developed are studied. Influence of active component content, type of support material and modification by Mn and Mo on the catalyst activity in de-H2S process is elucidated. Supported monolith catalysts show superior activity over bulk and supported spherical catalysts in H2S decomposition reaction and demonstrate stable operation in ammonia decomposition process during 2 hours at 900C giving 100% ammonia conversion.