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2-Methylnaphthalene Methylation over Aluminosilicate and Ferrisilicate with MTW-type Zeolite Structure and Their Kinetic Analysis
| Title: | 2-Methylnaphthalene Methylation over Aluminosilicate and Ferrisilicate with MTW-type Zeolite Structure and Their Kinetic Analysis |
| Authors: | Watanabe, Gaku Browse this author | | Nakasaka, Yuta Browse this author →KAKEN DB | | Masuda, Takao Browse this author |
| Keywords: | Kinetic analysis | | Methylation | | MTW-type zeolite catalyst | | 2-Methylnaphthalene | | Ferrisilicate |
| Issue Date: | May-2017 |
| Publisher: | Japan Petroleum Institute |
| Journal Title: | Journal of the Japan Petroleum Institute |
| Volume: | 60 |
| Issue: | 3 |
| Start Page: | 146 |
| End Page: | 153 |
| Publisher DOI: | 10.1627/jpi.60.146 |
| Abstract: | Aluminosilicate and ferrisilicate with the MTW-type zeolite structure were hydrothermally prepared and used to catalyze the methylation of 2-methylnaphthalene (2-MN) under supercritical conditions in a batch-type reactor. Dimethylnaphthalene (DMN) and 1-methylnaphthalene (1-MN) yields increased with decreasing Si/Al ratio of the zeolite. In contrast, ferrisilicate with the MTW-type zeolite structure (Si/Fe = 100) exhibited higher DMN selectivity and the beta,beta-DMN fraction in total DMNs was higher than that over aluminosilicate with MTW structure (Si/Al = 100). Kinetic analysis of 2-MN methylation over MTW zeolites was conducted, to obtain the reaction rate constants and apparent activation energies. The activation energy for the methylation of 2-MN over aluminosilicate with MTW structure was 176 kJ mol(-1), which was almost the same as that for the ferrisilicate with MTW structure. This indicates that the mechanism for methylation is independent of hetero-atoms species in the MTW zeolite framework. The introduction of Fe atoms into the framework significantly decreased the rate constant for the isomerization of 2-MN compared with that for the methylation of 2-MN. Therefore, ferrisilicate with MTW structure is effective for 2-MN methylation due to the decrease of the isomerization rate. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/66765 |
| Appears in Collections: | 工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 中坂 佑太
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