Selective synthesis of 1-butanol from ethanol over strontium phosphate hydroxyapatite catalysts

Shuhei Ogo, Ayumu Onda, Kazumichi Yanagisawa

研究成果: Article

104 引用 (Scopus)

抄録

We previously reported the ability of strontium hydroxyapatite to catalyze the conversion of ethanol into 1-butanol with higher selectivity than that reported for calcium hydroxyapatite catalysts. In the present study, we investigated the catalytic conversions of ethanol over substituted hydroxyapatites, such as Sr10(PO4)6(OH) 2, Ca10(VO4)6(OH)2, Sr10(VO4)6(OH)2, and Ca 10(PO4)6(OH)2, and their solid solutions, such as Ca10 - zSrz(PO4) 6(OH)2, Ca10(PO4) 6 - x(VO4)6 - x(OH)2, and Sr 10(PO4)6 - x(VO4) 6 - x(OH)2, were investigated. The strontium phosphate hydroxyapatite [Sr10(PO4)6(OH)2: Sr-P] exhibited the highest 1-butanol selectivity among the tested catalysts in the region of the ethanol conversions between 1 and 24%. The reaction mechanism of 1-butanol formation over the Sr-P hydroxyapatite catalyst includes the dehydrogenation of ethanol into acetaldehyde, the aldol condensation of acetaldehyde into crotonaldehyde, and the hydrogenations of crotonaldehyde, 2-buten-1-ol, and/or butyraldehyde into 1-butanol. The Sr-P hydroxyapatite catalyst showed high selectivity into crotonaldehyde in the aldol condensation of acetaldehyde and inhibited the coking in the hydrogen transfer reaction of 2-buten-1-ol into 1-butanol, which might be reasons why the Sr-P hydroxyapatite catalyst showed the high 1-butanol selectivity in the catalytic conversion of ethanol.

元の言語English
ページ(範囲)188-195
ページ数8
ジャーナルApplied Catalysis A: General
402
発行部数1-2
DOI
出版物ステータスPublished - 2011 7 31
外部発表Yes

Fingerprint

1-Butanol
2-butenal
Strontium
Durapatite
Butenes
Hydroxyapatite
Phosphates
Ethanol
Catalyst selectivity
Catalysts
Acetaldehyde
Hydroxyapatites
Condensation
Coking
Dehydrogenation
Hydrogenation
strontium phosphate
Hydrogen
Solid solutions
Calcium

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

これを引用

Selective synthesis of 1-butanol from ethanol over strontium phosphate hydroxyapatite catalysts. / Ogo, Shuhei; Onda, Ayumu; Yanagisawa, Kazumichi.

:: Applied Catalysis A: General, 巻 402, 番号 1-2, 31.07.2011, p. 188-195.

研究成果: Article

Ogo, Shuhei ; Onda, Ayumu ; Yanagisawa, Kazumichi. / Selective synthesis of 1-butanol from ethanol over strontium phosphate hydroxyapatite catalysts. :: Applied Catalysis A: General. 2011 ; 巻 402, 番号 1-2. pp. 188-195.
@article{2fa3192c8e0a407782b43f8c7b60df1f,
title = "Selective synthesis of 1-butanol from ethanol over strontium phosphate hydroxyapatite catalysts",
abstract = "We previously reported the ability of strontium hydroxyapatite to catalyze the conversion of ethanol into 1-butanol with higher selectivity than that reported for calcium hydroxyapatite catalysts. In the present study, we investigated the catalytic conversions of ethanol over substituted hydroxyapatites, such as Sr10(PO4)6(OH) 2, Ca10(VO4)6(OH)2, Sr10(VO4)6(OH)2, and Ca 10(PO4)6(OH)2, and their solid solutions, such as Ca10 - zSrz(PO4) 6(OH)2, Ca10(PO4) 6 - x(VO4)6 - x(OH)2, and Sr 10(PO4)6 - x(VO4) 6 - x(OH)2, were investigated. The strontium phosphate hydroxyapatite [Sr10(PO4)6(OH)2: Sr-P] exhibited the highest 1-butanol selectivity among the tested catalysts in the region of the ethanol conversions between 1 and 24{\%}. The reaction mechanism of 1-butanol formation over the Sr-P hydroxyapatite catalyst includes the dehydrogenation of ethanol into acetaldehyde, the aldol condensation of acetaldehyde into crotonaldehyde, and the hydrogenations of crotonaldehyde, 2-buten-1-ol, and/or butyraldehyde into 1-butanol. The Sr-P hydroxyapatite catalyst showed high selectivity into crotonaldehyde in the aldol condensation of acetaldehyde and inhibited the coking in the hydrogen transfer reaction of 2-buten-1-ol into 1-butanol, which might be reasons why the Sr-P hydroxyapatite catalyst showed the high 1-butanol selectivity in the catalytic conversion of ethanol.",
keywords = "1-Butanol, Ethanol, Strontium phosphate hydroxyapatite",
author = "Shuhei Ogo and Ayumu Onda and Kazumichi Yanagisawa",
year = "2011",
month = "7",
day = "31",
doi = "10.1016/j.apcata.2011.06.006",
language = "English",
volume = "402",
pages = "188--195",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - Selective synthesis of 1-butanol from ethanol over strontium phosphate hydroxyapatite catalysts

AU - Ogo, Shuhei

AU - Onda, Ayumu

AU - Yanagisawa, Kazumichi

PY - 2011/7/31

Y1 - 2011/7/31

N2 - We previously reported the ability of strontium hydroxyapatite to catalyze the conversion of ethanol into 1-butanol with higher selectivity than that reported for calcium hydroxyapatite catalysts. In the present study, we investigated the catalytic conversions of ethanol over substituted hydroxyapatites, such as Sr10(PO4)6(OH) 2, Ca10(VO4)6(OH)2, Sr10(VO4)6(OH)2, and Ca 10(PO4)6(OH)2, and their solid solutions, such as Ca10 - zSrz(PO4) 6(OH)2, Ca10(PO4) 6 - x(VO4)6 - x(OH)2, and Sr 10(PO4)6 - x(VO4) 6 - x(OH)2, were investigated. The strontium phosphate hydroxyapatite [Sr10(PO4)6(OH)2: Sr-P] exhibited the highest 1-butanol selectivity among the tested catalysts in the region of the ethanol conversions between 1 and 24%. The reaction mechanism of 1-butanol formation over the Sr-P hydroxyapatite catalyst includes the dehydrogenation of ethanol into acetaldehyde, the aldol condensation of acetaldehyde into crotonaldehyde, and the hydrogenations of crotonaldehyde, 2-buten-1-ol, and/or butyraldehyde into 1-butanol. The Sr-P hydroxyapatite catalyst showed high selectivity into crotonaldehyde in the aldol condensation of acetaldehyde and inhibited the coking in the hydrogen transfer reaction of 2-buten-1-ol into 1-butanol, which might be reasons why the Sr-P hydroxyapatite catalyst showed the high 1-butanol selectivity in the catalytic conversion of ethanol.

AB - We previously reported the ability of strontium hydroxyapatite to catalyze the conversion of ethanol into 1-butanol with higher selectivity than that reported for calcium hydroxyapatite catalysts. In the present study, we investigated the catalytic conversions of ethanol over substituted hydroxyapatites, such as Sr10(PO4)6(OH) 2, Ca10(VO4)6(OH)2, Sr10(VO4)6(OH)2, and Ca 10(PO4)6(OH)2, and their solid solutions, such as Ca10 - zSrz(PO4) 6(OH)2, Ca10(PO4) 6 - x(VO4)6 - x(OH)2, and Sr 10(PO4)6 - x(VO4) 6 - x(OH)2, were investigated. The strontium phosphate hydroxyapatite [Sr10(PO4)6(OH)2: Sr-P] exhibited the highest 1-butanol selectivity among the tested catalysts in the region of the ethanol conversions between 1 and 24%. The reaction mechanism of 1-butanol formation over the Sr-P hydroxyapatite catalyst includes the dehydrogenation of ethanol into acetaldehyde, the aldol condensation of acetaldehyde into crotonaldehyde, and the hydrogenations of crotonaldehyde, 2-buten-1-ol, and/or butyraldehyde into 1-butanol. The Sr-P hydroxyapatite catalyst showed high selectivity into crotonaldehyde in the aldol condensation of acetaldehyde and inhibited the coking in the hydrogen transfer reaction of 2-buten-1-ol into 1-butanol, which might be reasons why the Sr-P hydroxyapatite catalyst showed the high 1-butanol selectivity in the catalytic conversion of ethanol.

KW - 1-Butanol

KW - Ethanol

KW - Strontium phosphate hydroxyapatite

UR - http://www.scopus.com/inward/record.url?scp=79960251803&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960251803&partnerID=8YFLogxK

U2 - 10.1016/j.apcata.2011.06.006

DO - 10.1016/j.apcata.2011.06.006

M3 - Article

AN - SCOPUS:79960251803

VL - 402

SP - 188

EP - 195

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

IS - 1-2

ER -