Low-temperature synthesis of rhodium phosphide on alumina and investigation of its catalytic activity toward the hydrodesulfurization of thiophene

doi:info:doi/10.1016/j.apcata.2016.01.040

Low-temperature synthesis of rhodium phosphide on alumina and investigation of its catalytic activity toward the hydrodesulfurization of thiophene 利用統計を見る

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アイテムタイプ	学術雑誌論文 / Journal Article.
言語	英語
キーワード	Rhodium phosphide catalyst, Alumina support, Hydrodesulfurization, Triphenylphosphine, Low-temperature synthesis
著者	KANDA Yasuharu ( 研究者リゾルバーID: 1000070447085 ) SAWADA Ayaka SUGIOKA Masatoshi ( 研究者リゾルバーID: 1000080001329 ) UEMICHI Yoshio ( 研究者リゾルバーID: 1000090168659 )
著者（別表記）	神田康晴澤田紋佳杉岡正敏上道芳夫
室蘭工業大学研究者データベースへのリンク	神田康晴（KANDA Yasuharu）澤田紋佳（SAWADA Ayaka）上道芳夫（UEMICHI Yoshio）
抄録	In this study, the low-temperature synthesis of rhodium phosphide (Rh2P) on alumina (Al2O3) using triphenylphosphine (TPP) as a phosphorus (P) source and its catalytic activity toward hydrodesulfurization (HDS) were investigated to prepare a highly active HDS catalyst. TPP was more easily reduced than phosphate, and Rh2P was formed in the P(T)/Rh/Al2O3 catalyst prepared from TTP at lower temperature as compared with the temperature required by Rh-P(A)/Al2O3 catalyst prepared from a phosphate precursor. However, after reduction at a low temperature (450 °C), excess P covered the surface of Rh2P. The optimal reduction temperature for HDS rate of the P(T)/Rh/Al2O3 catalyst (650 °C) was lower than that of the Rh-P(A)/Al2O3 catalyst (800 °C). Furthermore, this temperature was slightly higher than the optimal reduction temperature for CO uptake (600 °C). These results are explained as follows: HDS rate is increased by both elimination of excess P on the active sites at higher reduction temperatures and enhancement of the crystallinity of Rh2P. Furthermore, because the particle size of the P(T)/Rh/Al2O3 catalyst (ca. 1.2 nm) was substantially smaller than that of the Rh-P(A)/Al2O3 catalyst, the P(T)/Rh/Al2O3 catalyst exhibited greater HDS rate compared with the Rh-P(A)/Al2O3 catalyst.
雑誌名	Applied Catalysis A: General
巻	515
ページ	25 - 31
発行年	2016-04-10
出版者	Elsevier
出版者版へのリンク	10.1016
DOI	info:doi/10.1016/j.apcata.2016.01.040
日本十進分類法	431
ISSN	0926860X
書誌レコードID	AA10821202 AA1152363X
権利	© 2016. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
著者版フラグ	author
フォーマット	application/pdf

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Low-temperature synthesis of rhodium phosphide on alumina and investigation of its catalytic activity toward the hydrodesulfurization of thiophene 利用統計を見る

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