The influence of desilication on high-silica MFI and its catalytic performance for N                         2                         O decomposition

Qun Shen; Minfang Wu; Hui Wang; Nannan Sun; Chi He; Wei Wei

doi:10.1016/j.apsusc.2018.01.052

The influence of desilication on high-silica MFI and its catalytic performance for N ₂ O decomposition

Qun Shen
, Minfang Wu
, Hui Wang
, Nannan Sun
, Chi He
, Wei Wei

School of Energy and Power Engineering

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

20 Scopus citations

Abstract

A series of MFI zeolites with different Si/Al ratios were pretreated by a basic solution and their catalytic activity was evaluated in N ₂ O decomposition after iron exchange. The performance of Fe-ZSM-5 catalysts could be improved by alkaline pretreatment. Among these samples, the activity curve of Fe-Z5-250-S sample could move to low temperature by >100 °C with a good preservation of hydrothermal stability. It is found that with the meso-microporous hybrid structure, the content of iron as active metal is significantly increased. Additionally, well preservation of the chemical environment around the tetrahedral aluminum and the site accessibility probably may be the other important factors to influence the catalytic activity.

Original language	English
Pages (from-to)	474-481
Number of pages	8
Journal	Applied Surface Science
Volume	441
DOIs	https://doi.org/10.1016/j.apsusc.2018.01.052
State	Published - 31 May 2018

Keywords

Alkaline leaching
Catalytic performance
Hybrid structure
N O decomposition
Zeolite

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10.1016/j.apsusc.2018.01.052

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@article{4408020d874a4f1b86bb1fc0ed162691,

title = " The influence of desilication on high-silica MFI and its catalytic performance for N 2 O decomposition ",

abstract = " A series of MFI zeolites with different Si/Al ratios were pretreated by a basic solution and their catalytic activity was evaluated in N 2 O decomposition after iron exchange. The performance of Fe-ZSM-5 catalysts could be improved by alkaline pretreatment. Among these samples, the activity curve of Fe-Z5-250-S sample could move to low temperature by >100 °C with a good preservation of hydrothermal stability. It is found that with the meso-microporous hybrid structure, the content of iron as active metal is significantly increased. Additionally, well preservation of the chemical environment around the tetrahedral aluminum and the site accessibility probably may be the other important factors to influence the catalytic activity.",

keywords = "Alkaline leaching, Catalytic performance, Hybrid structure, N O decomposition, Zeolite",

author = "Qun Shen and Minfang Wu and Hui Wang and Nannan Sun and Chi He and Wei Wei",

note = "Publisher Copyright: {\textcopyright} 2018",

year = "2018",

month = may,

day = "31",

doi = "10.1016/j.apsusc.2018.01.052",

language = "英语",

volume = "441",

pages = "474--481",

journal = "Applied Surface Science",

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}

The influence of desilication on high-silica MFI and its catalytic performance for N ₂ O decomposition . / Shen, Qun; Wu, Minfang; Wang, Hui et al.
In: Applied Surface Science, Vol. 441, 31.05.2018, p. 474-481.

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

TY - JOUR

T1 - The influence of desilication on high-silica MFI and its catalytic performance for N 2 O decomposition

AU - Shen, Qun

AU - Wu, Minfang

AU - Wang, Hui

AU - Sun, Nannan

AU - He, Chi

AU - Wei, Wei

PY - 2018/5/31

Y1 - 2018/5/31

N2 - A series of MFI zeolites with different Si/Al ratios were pretreated by a basic solution and their catalytic activity was evaluated in N 2 O decomposition after iron exchange. The performance of Fe-ZSM-5 catalysts could be improved by alkaline pretreatment. Among these samples, the activity curve of Fe-Z5-250-S sample could move to low temperature by >100 °C with a good preservation of hydrothermal stability. It is found that with the meso-microporous hybrid structure, the content of iron as active metal is significantly increased. Additionally, well preservation of the chemical environment around the tetrahedral aluminum and the site accessibility probably may be the other important factors to influence the catalytic activity.

AB - A series of MFI zeolites with different Si/Al ratios were pretreated by a basic solution and their catalytic activity was evaluated in N 2 O decomposition after iron exchange. The performance of Fe-ZSM-5 catalysts could be improved by alkaline pretreatment. Among these samples, the activity curve of Fe-Z5-250-S sample could move to low temperature by >100 °C with a good preservation of hydrothermal stability. It is found that with the meso-microporous hybrid structure, the content of iron as active metal is significantly increased. Additionally, well preservation of the chemical environment around the tetrahedral aluminum and the site accessibility probably may be the other important factors to influence the catalytic activity.

KW - Alkaline leaching

KW - Catalytic performance

KW - Hybrid structure

KW - N O decomposition

KW - Zeolite

UR - https://www.scopus.com/pages/publications/85041853642

U2 - 10.1016/j.apsusc.2018.01.052

DO - 10.1016/j.apsusc.2018.01.052

M3 - 文章

AN - SCOPUS:85041853642

SN - 0169-4332

VL - 441

SP - 474

EP - 481

JO - Applied Surface Science

JF - Applied Surface Science

ER -

The influence of desilication on high-silica MFI and its catalytic performance for N ₂ O decomposition

Abstract

Keywords

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