| Item type |
文献 / Documents(1) |
| 公開日 |
2016-10-31 |
| アクセス権 |
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アクセス権 |
open access |
| 資源タイプ |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
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資源タイプ |
journal article |
| 出版社版DOI |
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識別子タイプ |
URI |
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関連識別子 |
https://www.jstage.jst.go.jp/article/jcej/46/7/46_12we259/_article |
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言語 |
ja |
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|
関連名称 |
10.1252/jcej.12we259 |
| 出版タイプ |
|
|
出版タイプ |
AM |
|
出版タイプResource |
http://purl.org/coar/version/c_ab4af688f83e57aa |
| タイトル |
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|
タイトル |
The Oxidative Esterification of Propionaldehyde to Methyl Propionate in the Liquid-Phase Using a Heterogeneous Palladium Catalyst |
|
言語 |
en |
| 著者 |
杉山, 茂
バンドウ, タクヤ
セノ, ユウスケ
ワタナベ, エミコ
中川, 敬三
加藤, 雅裕
外輪, 健一郎
カトウ, ユウキ
アキハラ, シュウジ
ニノミヤ, ワタル
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| 抄録 |
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内容記述タイプ |
Abstract |
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内容記述 |
The optimization of the oxidative esterification of propionaldehyde to methyl propionate using a supported palladium catalyst in methanol under heavy-metal-free and pressurized-oxygen conditions, which we recently reported in a previous paper, were carried out together with a study of the reaction route, the nature of the catalytic active sites, and the effect of the support. In our previous paper, we reported significantly improved activity for oxidative esterification using commercially available 5%Pd/Al2O3 at 1.5 MPa of O2 gas and 333 K and emphasized that the doping of 5%Pd/Al2O3 with lead was not needed for the reaction system, but we could not improve the activity that was reported when using 5%Pd/γ-Al2O3 doped with 5% Pb (a 93.2% conversion of propionaldehyde, 76.8% selectivity for methyl propionate and a 71.6% yield of methyl propionate) at 0.3 MPa of O2 gas and 353 K, as reported by another laboratory. In the present study, however, we exceeded those values and obtained a 98.3% conversion of propionaldehyde, 75.3% selectivity for methyl propionate and a 74.0% yield of methyl propionate using 5%Pd/γ-Al2O3 undoped with Pb at 1.5 MPa of O2 gas and 333 K. It should be noted that, in the preparation of the present 5%Pd/γ-Al2O3, Pd was doped onto Al2O3 that had been previously treated with aqueous NaOH. Another active alumina support,η-Al2O3, prepared from boehmite, afforded activity that was substantially lower than that of γ-Al2O3 and depended on the calcination temperature of boehmite to η-Al2O3. When using various concentrations of CH3OH in the aqueous reaction solution, the oxidative esterification proceeded through the formation of propionic acid. To determine why the Al2O3 support afforded better activity than the active carbon support, Pd/Al2O3 and Pd/C catalysts were examined by XAFS (X-ray absorption fine structure). XAFS revealed that Pd on Al2O3 shows a better redox nature than Pd on C, which resulted in activity on Pd/Al2O3 that was better than that on Pd/C. |
|
言語 |
en |
| キーワード |
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|
言語 |
en |
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主題Scheme |
Other |
|
主題 |
Oxidative Esterification |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Propionaldehyde |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Methyl Propionate |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Palladium Catalyst |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Pressurized Oxygen |
| 書誌情報 |
en : Journal of Chemical Engineering of Japan
巻 46,
号 7,
p. 455-460,
発行日 2013
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| 収録物ID |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
00219592 |
| 収録物ID |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AA00709658 |
| 権利情報 |
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|
言語 |
en |
|
権利情報 |
Copyright © 2013 The Society of Chemical Engineers, Japan |
| EID |
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識別子 |
259994 |
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識別子タイプ |
URI |
| 言語 |
|
|
言語 |
eng |
LID201610312002.pdf (467 KB)
