Highly durable Pt-supported niobia-silica aerogel catalysts in the aqueous-phase hydrodeoxygenation of 1-propanol

Jihye Ryu; Sung Min Kim; Jae Wook Choi; Jeong Myeong Ha; Dong June Ahn; Dong Jin Suh; Young Woong Suh

doi:10.1016/j.catcom.2012.09.022

Highly durable Pt-supported niobia-silica aerogel catalysts in the aqueous-phase hydrodeoxygenation of 1-propanol

Jihye Ryu, Sung Min Kim, Jae Wook Choi, Jeong Myeong Ha, Dong June Ahn, Dong Jin Suh, Young Woong Suh

Department of Chemical and Biological Engineering

Research output: Contribution to journal › Article › peer-review

15 Citations (Scopus)

Abstract

The aqueous-phase hydrodeoxygenation (APHDO) of 1-propanol at 230 °C and 35 bar was studied over 1 wt.% Pt catalysts supported on several metal oxides. Pt catalysts supported on amorphous silica, alumina and niobia aerogels, and crystalline niobic acid calcined at 500 °C showed low activities or deactivation. Under the APHDO condition, these supports experienced a structure transformation to crystalline quartz, boehmite and niobia TT phase. Pt/Nb ₂O₅-Al₂O₃ aerogel also suffered from the same crystallization behavior. In contrast, Pt/Nb₂O ₅-SiO₂ aerogels with different Nb/(Nb + Si) ratios maintained a good catalytic performance for prolonged reaction periods. Through characterizations of spent catalysts, Nb₂O₅-SiO ₂ aerogels were found to retain X-ray amorphous and porous structure. Also, their acid site densities were negligibly changed during the reaction. The catalysts with the Nb / (Nb + Si) ratio of 0.500 and 0.575 reached the molar propane/ethane ratio of about 1.0, indicating that Pt/Nb₂O ₅-SiO₂ aerogel catalysts are highly active in the presence of water.

Original language	English
Pages (from-to)	40-47
Number of pages	8
Journal	Catalysis Communications
Volume	29
DOIs	https://doi.org/10.1016/j.catcom.2012.09.022
Publication status	Published - 2012 Dec 5

Keywords

1-Propanol
Aerogel
Aqueous-phase processing
Hydrodeoxygenation
Pt/Nb O-SiO

ASJC Scopus subject areas

Catalysis
Chemistry(all)
Process Chemistry and Technology

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10.1016/j.catcom.2012.09.022

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@article{37b76433bc22400e99ba0005e2e1a12e,

title = "Highly durable Pt-supported niobia-silica aerogel catalysts in the aqueous-phase hydrodeoxygenation of 1-propanol",

abstract = "The aqueous-phase hydrodeoxygenation (APHDO) of 1-propanol at 230 °C and 35 bar was studied over 1 wt.% Pt catalysts supported on several metal oxides. Pt catalysts supported on amorphous silica, alumina and niobia aerogels, and crystalline niobic acid calcined at 500 °C showed low activities or deactivation. Under the APHDO condition, these supports experienced a structure transformation to crystalline quartz, boehmite and niobia TT phase. Pt/Nb 2O5-Al2O3 aerogel also suffered from the same crystallization behavior. In contrast, Pt/Nb2O 5-SiO2 aerogels with different Nb/(Nb + Si) ratios maintained a good catalytic performance for prolonged reaction periods. Through characterizations of spent catalysts, Nb2O5-SiO 2 aerogels were found to retain X-ray amorphous and porous structure. Also, their acid site densities were negligibly changed during the reaction. The catalysts with the Nb / (Nb + Si) ratio of 0.500 and 0.575 reached the molar propane/ethane ratio of about 1.0, indicating that Pt/Nb2O 5-SiO2 aerogel catalysts are highly active in the presence of water.",

keywords = "1-Propanol, Aerogel, Aqueous-phase processing, Hydrodeoxygenation, Pt/Nb O-SiO",

author = "Jihye Ryu and Kim, {Sung Min} and Choi, {Jae Wook} and Ha, {Jeong Myeong} and Ahn, {Dong June} and Suh, {Dong Jin} and Suh, {Young Woong}",

note = "Funding Information: This research was financially supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology of Korea (Grant no. 2012R1A1A1007866 ) and Industrial Source Technology Development Program of the Ministry of Knowledge and Economy (MKE) of Korea (Grant no. 2012‐10042591 ). ",

year = "2012",

month = dec,

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doi = "10.1016/j.catcom.2012.09.022",

language = "English",

volume = "29",

pages = "40--47",

journal = "Catalysis Communications",

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T1 - Highly durable Pt-supported niobia-silica aerogel catalysts in the aqueous-phase hydrodeoxygenation of 1-propanol

AU - Ryu, Jihye

AU - Kim, Sung Min

AU - Choi, Jae Wook

AU - Ha, Jeong Myeong

AU - Ahn, Dong June

AU - Suh, Dong Jin

AU - Suh, Young Woong

N1 - Funding Information: This research was financially supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology of Korea (Grant no. 2012R1A1A1007866 ) and Industrial Source Technology Development Program of the Ministry of Knowledge and Economy (MKE) of Korea (Grant no. 2012‐10042591 ).

PY - 2012/12/5

Y1 - 2012/12/5

N2 - The aqueous-phase hydrodeoxygenation (APHDO) of 1-propanol at 230 °C and 35 bar was studied over 1 wt.% Pt catalysts supported on several metal oxides. Pt catalysts supported on amorphous silica, alumina and niobia aerogels, and crystalline niobic acid calcined at 500 °C showed low activities or deactivation. Under the APHDO condition, these supports experienced a structure transformation to crystalline quartz, boehmite and niobia TT phase. Pt/Nb 2O5-Al2O3 aerogel also suffered from the same crystallization behavior. In contrast, Pt/Nb2O 5-SiO2 aerogels with different Nb/(Nb + Si) ratios maintained a good catalytic performance for prolonged reaction periods. Through characterizations of spent catalysts, Nb2O5-SiO 2 aerogels were found to retain X-ray amorphous and porous structure. Also, their acid site densities were negligibly changed during the reaction. The catalysts with the Nb / (Nb + Si) ratio of 0.500 and 0.575 reached the molar propane/ethane ratio of about 1.0, indicating that Pt/Nb2O 5-SiO2 aerogel catalysts are highly active in the presence of water.

AB - The aqueous-phase hydrodeoxygenation (APHDO) of 1-propanol at 230 °C and 35 bar was studied over 1 wt.% Pt catalysts supported on several metal oxides. Pt catalysts supported on amorphous silica, alumina and niobia aerogels, and crystalline niobic acid calcined at 500 °C showed low activities or deactivation. Under the APHDO condition, these supports experienced a structure transformation to crystalline quartz, boehmite and niobia TT phase. Pt/Nb 2O5-Al2O3 aerogel also suffered from the same crystallization behavior. In contrast, Pt/Nb2O 5-SiO2 aerogels with different Nb/(Nb + Si) ratios maintained a good catalytic performance for prolonged reaction periods. Through characterizations of spent catalysts, Nb2O5-SiO 2 aerogels were found to retain X-ray amorphous and porous structure. Also, their acid site densities were negligibly changed during the reaction. The catalysts with the Nb / (Nb + Si) ratio of 0.500 and 0.575 reached the molar propane/ethane ratio of about 1.0, indicating that Pt/Nb2O 5-SiO2 aerogel catalysts are highly active in the presence of water.

KW - 1-Propanol

KW - Aerogel

KW - Aqueous-phase processing

KW - Hydrodeoxygenation

KW - Pt/Nb O-SiO

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DO - 10.1016/j.catcom.2012.09.022

M3 - Article

AN - SCOPUS:84866933256

SN - 1566-7367

VL - 29

SP - 40

EP - 47

JO - Catalysis Communications

JF - Catalysis Communications

ER -

Highly durable Pt-supported niobia-silica aerogel catalysts in the aqueous-phase hydrodeoxygenation of 1-propanol

Abstract

Keywords

ASJC Scopus subject areas

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