Production of chemicals by cracking pyrolytic tar from Loy Yang coal over iron oxide catalysts in a steam atmosphere |
| |
| Authors: | Nozomu Sonoyama Kazunari NobutaTokuji Kimura Sou HosokaiJun-ichiro Hayashi Teruoki TagoTakao Masuda |
| |
| Affiliation: | a Coal & Environment Research Laboratory, Coal Business Office, Petroleum & Coal Marketing Department, Idemitsu Kosan Co., Ltd., 3-1 Nakasode, Sodegaura, Chiba 299-0267, Japanb Division of Chemical Process Engineering, Graduate School of Engineering, Hokkaido University, N13 W8 Kita-ku, Sapporo, Hokkaido 060-8628, Japanc Center for Advanced Research of Energy Conversion Materials, Hokkaido University, N13 W8 Kita-ku, Sapporo, Hokkaido 060-8628, Japand Division of Advanced Device Material, Institute for Materials Chemistry and Engineering, Kyushu University, 6-1, Kasuga Koen, Kasuga, Fukuoka 816-8580, Japan |
| |
| Abstract: | Iron oxide catalysts containing metal promoters were tested to evaluate whether they could be applied to the coal tar obtained from the pyrolysis of Loy Yang coal. Catalytic cracking of the coal tar in a steam atmosphere was conducted in a fixed-bed reactor at 773 K and ambient atmospheric pressure. For iron oxide catalysts containing cerium, zirconium, and aluminium, the total yield of monocyclic aromatic hydrocarbons, phenols, and ketones exceeded 40 mol-C% on a tar basis, while about 97 wt.% of the initial heavy tar was decomposed. The combination of cerium, zirconium, and aluminium improved the activity of the iron oxide catalyst. Moreover, the addition of steam to the tar vapour increased the yield of ketones and made the catalyst more durable. |
| |
| Keywords: | Iron catalysts Brown coal Catalytic cracking Phenols Ketones Steam |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
