Relation of Selective Oxidation Catalytic Performance to Microenvironment of TiIV Active Site Based on Isotopic Labeling

Hao Xu; Yejun Guan; Xinqing Lu; Jinpeng Yin; Xiaohong Li; Danhong Zhou; Peng Wu

doi:10.1021/acscatal.0c00439

Relation of Selective Oxidation Catalytic Performance to Microenvironment of Ti^IV Active Site Based on Isotopic Labeling

Hao Xu
, Yejun Guan
, Xinqing Lu
, Jinpeng Yin
, Xiaohong Li^*
, Danhong Zhou
, Peng Wu

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

East China Normal University
Liaoning Normal University

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

50 Scopus citations

Abstract

The microenvironment of active sites in zeolite framework is critical for catalytic performance. Four Ti-MWW titanosilicates, prepared by different methods in this study, fell into two categories in view of intrinsic catalytic activity in liquid-phase ketone ammoximation and alkene epoxidation reactions. Isotopic labeled IR spectra and DFT calculation disclosed that rather than the traditional 960 cm^-1 band, the Ti-O-Si sites dominating an unusual band at 930 cm^-1 endowed Ti-MWW with much higher activity.

Original language	English
Pages (from-to)	4813-4819
Number of pages	7
Journal	ACS Catalysis
Volume	10
Issue number	8
DOIs	https://doi.org/10.1021/acscatal.0c00439
State	Published - 17 Apr 2020

Keywords

isotopic labeling
microenvironment
preparation method
selective oxidation
titanosilicate

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10.1021/acscatal.0c00439

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title = "Relation of Selective Oxidation Catalytic Performance to Microenvironment of TiIV Active Site Based on Isotopic Labeling",

abstract = "The microenvironment of active sites in zeolite framework is critical for catalytic performance. Four Ti-MWW titanosilicates, prepared by different methods in this study, fell into two categories in view of intrinsic catalytic activity in liquid-phase ketone ammoximation and alkene epoxidation reactions. Isotopic labeled IR spectra and DFT calculation disclosed that rather than the traditional 960 cm-1 band, the Ti-O-Si sites dominating an unusual band at 930 cm-1 endowed Ti-MWW with much higher activity.",

keywords = "isotopic labeling, microenvironment, preparation method, selective oxidation, titanosilicate",

author = "Hao Xu and Yejun Guan and Xinqing Lu and Jinpeng Yin and Xiaohong Li and Danhong Zhou and Peng Wu",

note = "Publisher Copyright: {\textcopyright} 2020 American Chemical Society.",

year = "2020",

month = apr,

day = "17",

doi = "10.1021/acscatal.0c00439",

language = "英语",

volume = "10",

pages = "4813--4819",

journal = "ACS Catalysis",

issn = "2155-5435",

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T1 - Relation of Selective Oxidation Catalytic Performance to Microenvironment of TiIV Active Site Based on Isotopic Labeling

AU - Xu, Hao

AU - Guan, Yejun

AU - Lu, Xinqing

AU - Yin, Jinpeng

AU - Li, Xiaohong

AU - Zhou, Danhong

AU - Wu, Peng

PY - 2020/4/17

Y1 - 2020/4/17

N2 - The microenvironment of active sites in zeolite framework is critical for catalytic performance. Four Ti-MWW titanosilicates, prepared by different methods in this study, fell into two categories in view of intrinsic catalytic activity in liquid-phase ketone ammoximation and alkene epoxidation reactions. Isotopic labeled IR spectra and DFT calculation disclosed that rather than the traditional 960 cm-1 band, the Ti-O-Si sites dominating an unusual band at 930 cm-1 endowed Ti-MWW with much higher activity.

AB - The microenvironment of active sites in zeolite framework is critical for catalytic performance. Four Ti-MWW titanosilicates, prepared by different methods in this study, fell into two categories in view of intrinsic catalytic activity in liquid-phase ketone ammoximation and alkene epoxidation reactions. Isotopic labeled IR spectra and DFT calculation disclosed that rather than the traditional 960 cm-1 band, the Ti-O-Si sites dominating an unusual band at 930 cm-1 endowed Ti-MWW with much higher activity.

KW - isotopic labeling

KW - microenvironment

KW - preparation method

KW - selective oxidation

KW - titanosilicate

UR - https://www.scopus.com/pages/publications/85084635071

U2 - 10.1021/acscatal.0c00439

DO - 10.1021/acscatal.0c00439

M3 - 文章

AN - SCOPUS:85084635071

SN - 2155-5435

VL - 10

SP - 4813

EP - 4819

JO - ACS Catalysis

JF - ACS Catalysis

IS - 8

ER -

Relation of Selective Oxidation Catalytic Performance to Microenvironment of Ti^IV Active Site Based on Isotopic Labeling

Abstract

Keywords

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