title: Steam reforming of tar derived from lignin over pompom-like potassium-promoted iron-based catalysts formed on calcined scallop shell.
abstract: In order to understand the improvement effect of potassium (K) on the catalytic activity of iron-loaded calcined scallop shell (CS) for the steam reforming tar derived from biomass, various K precursors were applied for the catalyst preparation. It is found that pompom-like iron-based particles with a mesoporous structure were easily formed on the surface of calcined scallop shell (CS) when K2CO3 was used as K precursor while no such kind of microsphere was formed when other kinds of K precursors such as KOH and KNO3 were applied. The optimum K-loading amount for the preparation of this catalyst was investigated. Based on the experimental results obtained, a mechanism for the formation of these microspheres was proposed. This pompom-like potassium-promoted iron-based catalyst showed a better catalytic activity and reusability for the steam reforming of tar derived from lignin.
authors.affiliation: North Japan Research Institute for Sustainable Energy (NJRISE), Hirosaki University, 2-1-3 Matsubara, Aomori 030-0813, Japan. guan@cc.hirosaki-u.ac.jp
authors.forename: Guoqing
authors.initials: G
authors.lastname: Guan
authors.forename: Malinee
authors.initials: M
authors.lastname: Kaewpanha
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Hao
authors.forename: Ai-Min
authors.initials: AM
authors.lastname: Zhu
authors.forename: Yutaka
authors.initials: Y
authors.lastname: Kasai
authors.forename: Seiji
authors.initials: S
authors.lastname: Kakuta
authors.forename: Katsuki
authors.initials: K
authors.lastname: Kusakabe
authors.forename: Abuliti
authors.initials: A
authors.lastname: Abudula
mesh_terms: D060105:Animal Shells / Q000737:chemistry*; D000818:Animals; D002384:Catalysis; D002606:Charcoal / Q000737:chemistry; D007501:Iron / Q000737:chemistry*; D008031:Lignin / Q000737:chemistry*; D049897:Pectinidae / Q000033:anatomy & histology*; D011188:Potassium / Q000737:chemistry*; D059027:Recycling; D013227:Steam; D013638:Tars / Q000737:chemistry*
chemical_list: D013227:Steam; D013638:Tars; D002606:Charcoal; D008031:Lignin; D007501:Iron; D011188:Potassium