Development of Highly Active Co-Mo Catalysts with Phosphorus and Citric Acid for Ultra-deep Desulfurization of Diesel Fractions (Part 2) Characterization of Active Sites
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- Fujikawa Takashi
- Research and Development Center, Cosmo Oil Co., Ltd.
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- Kato Masahiro
- Research and Development Center, Cosmo Oil Co., Ltd.
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- Ebihara Takeshi
- Research and Development Center, Cosmo Oil Co., Ltd.
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- Hagiwara Kazuhiko
- Research and Development Center, Cosmo Oil Co., Ltd.
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- Kubota Takeshi
- Dept. of Material Science, Interdisciplinary Faculty of Science and Engineering, Shimane University
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- Okamoto Yasuaki
- Dept. of Material Science, Interdisciplinary Faculty of Science and Engineering, Shimane University
Bibliographic Information
- Other Title
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- リンとクエン酸を添加した高活性Co-Mo系軽油超深度脱硫触媒の開発(第2報)活性点のキャラクタリゼーション
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Abstract
Mo K-edge EXAFS, TEM and FT-IR of adsorbed NO were performed to further investigate the nature of the active sites on the CoMo/HY-Al2O3 catalyst containing citric acid and phosphorus, which had significantly higher HDS activity compared to the conventional CoMoP/Al2O3 catalyst. The results showed that the new catalyst has multiple layers of MoS2 slabs and the edges of MoS2 are mainly occupied by Co-Mo-S phases. XPS and FT-IR were used to investigate the sulfiding behavior of Co and Mo in the formation process of the active sites during sulfidation. The results showed that addition of citric acid to the impregnation solution postponed the sulfidation of Co at low temperatures, thereby increasing formation of the Co-Mo-S phase.<br>
Journal
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- Journal of the Japan Petroleum Institute
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Journal of the Japan Petroleum Institute 48 (2), 114-120, 2005
The Japan Petroleum Institute
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Keywords
Details 詳細情報について
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- CRID
- 1390282680166659456
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- NII Article ID
- 130000065988
- 30012363687
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- NII Book ID
- AA11590615
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- COI
- 1:CAS:528:DC%2BD2MXit12rs7s%3D
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- ISSN
- 1349273X
- 13468804
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- NDL BIB ID
- 7270196
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed