Skeletal isomerization of tetradecane catalyzed by TON-type zeolites with a fragmented core-shell structure

Masaki Okamoto; Lili Huang; Midori Yamano; Sayuri Sawayama; Yohei Nishimura

doi:10.1016/j.apcata.2013.01.030

Skeletal isomerization of tetradecane catalyzed by TON-type zeolites with a fragmented core-shell structure

Masaki Okamoto, Lili Huang, Midori Yamano, Sayuri Sawayama, Yohei Nishimura

研究成果: Article › 査読

19 被引用数 (Scopus)

抄録

TON-type zeolites with a core-shell structure were synthesized by crystal overgrowth of an aluminum-free TON-type zeolite on an aluminum-containing TON-type zeolite in the presence of fluoride ion, which was used as a mineralizing reagent to restrain the formation of defects. The core-shell structured zeolite showed greater selectivity for skeletal isomerization in tetradecane hydroisomerization because the acid sites on the external surface of needle-shaped crystals were passivated to inhibit cracking. Breaking the needle-shaped crystals of the core-shell structure to create shorter crystal pieces effectively enhanced the catalytic activity and selectivity for isomerization because new pore entrances were formed.

本文言語	English
ページ（範囲）	122-128
ページ数	7
ジャーナル	Applied Catalysis A: General
巻	455
DOI	https://doi.org/10.1016/j.apcata.2013.01.030
出版ステータス	Published - 2013 3月 30
外部発表	はい

ASJC Scopus subject areas

触媒
プロセス化学およびプロセス工学

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10.1016/j.apcata.2013.01.030

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title = "Skeletal isomerization of tetradecane catalyzed by TON-type zeolites with a fragmented core-shell structure",

abstract = "TON-type zeolites with a core-shell structure were synthesized by crystal overgrowth of an aluminum-free TON-type zeolite on an aluminum-containing TON-type zeolite in the presence of fluoride ion, which was used as a mineralizing reagent to restrain the formation of defects. The core-shell structured zeolite showed greater selectivity for skeletal isomerization in tetradecane hydroisomerization because the acid sites on the external surface of needle-shaped crystals were passivated to inhibit cracking. Breaking the needle-shaped crystals of the core-shell structure to create shorter crystal pieces effectively enhanced the catalytic activity and selectivity for isomerization because new pore entrances were formed.",

keywords = "Core-shell structure, Isomerization, Passivation, TON-type zeolite",

author = "Masaki Okamoto and Lili Huang and Midori Yamano and Sayuri Sawayama and Yohei Nishimura",

note = "Funding Information: This work was supported by JSPS KAKENHI Grant Number 21550187 . We thank the Art and Crafts Education and Research Support Center in Tokyo Institute of Technology for help with the SEM images. The SEM observations and WDS analyzes were performed at the Center for Advanced Materials Analysis in Tokyo Institute of Technology. ",

year = "2013",

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doi = "10.1016/j.apcata.2013.01.030",

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T1 - Skeletal isomerization of tetradecane catalyzed by TON-type zeolites with a fragmented core-shell structure

AU - Okamoto, Masaki

AU - Huang, Lili

AU - Yamano, Midori

AU - Sawayama, Sayuri

AU - Nishimura, Yohei

N1 - Funding Information: This work was supported by JSPS KAKENHI Grant Number 21550187 . We thank the Art and Crafts Education and Research Support Center in Tokyo Institute of Technology for help with the SEM images. The SEM observations and WDS analyzes were performed at the Center for Advanced Materials Analysis in Tokyo Institute of Technology.

PY - 2013/3/30

Y1 - 2013/3/30

N2 - TON-type zeolites with a core-shell structure were synthesized by crystal overgrowth of an aluminum-free TON-type zeolite on an aluminum-containing TON-type zeolite in the presence of fluoride ion, which was used as a mineralizing reagent to restrain the formation of defects. The core-shell structured zeolite showed greater selectivity for skeletal isomerization in tetradecane hydroisomerization because the acid sites on the external surface of needle-shaped crystals were passivated to inhibit cracking. Breaking the needle-shaped crystals of the core-shell structure to create shorter crystal pieces effectively enhanced the catalytic activity and selectivity for isomerization because new pore entrances were formed.

AB - TON-type zeolites with a core-shell structure were synthesized by crystal overgrowth of an aluminum-free TON-type zeolite on an aluminum-containing TON-type zeolite in the presence of fluoride ion, which was used as a mineralizing reagent to restrain the formation of defects. The core-shell structured zeolite showed greater selectivity for skeletal isomerization in tetradecane hydroisomerization because the acid sites on the external surface of needle-shaped crystals were passivated to inhibit cracking. Breaking the needle-shaped crystals of the core-shell structure to create shorter crystal pieces effectively enhanced the catalytic activity and selectivity for isomerization because new pore entrances were formed.

KW - Core-shell structure

KW - Isomerization

KW - Passivation

KW - TON-type zeolite

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DO - 10.1016/j.apcata.2013.01.030

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VL - 455

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EP - 128

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

ER -

Skeletal isomerization of tetradecane catalyzed by TON-type zeolites with a fragmented core-shell structure

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