Delamination of Ti-MWW and high efficiency in epoxidation of alkenes with various molecular sizes

Peng Wu; Duangamol Nuntasri; Juanfang Ruan; Yueming Liu; Minyuan He; Weibin Fan; Osamu Terasaki; Takashi Tatsumi

doi:10.1021/jp037459a

Delamination of Ti-MWW and high efficiency in epoxidation of alkenes with various molecular sizes

Peng Wu^*
, Duangamol Nuntasri
, Juanfang Ruan
, Yueming Liu
, Minyuan He
, Weibin Fan
, Osamu Terasaki
, Takashi Tatsumi

^*Corresponding author for this work

School of Chemistry and Molecular Engineering

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

155 Scopus citations

Abstract

A new titanosilicate, named Del-Ti-MWW, has been prepared by delaminating the lamellar precursor of Ti-MWW, which is postsynthesized from highly deboronated MWW zeolite with the assistance of cyclic amine. The amount of organic base used for supporting surfactant in swelling the layered structure should be controlled carefully to delaminate efficiently without the collapse of the structure. Ultrasound treatment is demonstrated to delaminate the swollen material more completely. Del-Ti-MWW materials have a large surface area, which mitigates effectively the steric restrictions imposed by conventional microporous titanosilicates to bulky molecules. Del-Ti-MWW, maintaining the fundamental structure of MWW zeolite and tetrahedral Ti species in the framework position, proves to be superior to TS-1, Ti-Beta, three-dimensional Ti-MWW and even mesoporous Ti-MCM-41 in the epoxidation of a wide range of bulky alkenes with hydrogen peroxide.

Original language	English
Pages (from-to)	19126-19131
Number of pages	6
Journal	Journal of Physical Chemistry B
Volume	108
Issue number	50
DOIs	https://doi.org/10.1021/jp037459a
State	Published - 16 Dec 2004

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title = "Delamination of Ti-MWW and high efficiency in epoxidation of alkenes with various molecular sizes",

abstract = "A new titanosilicate, named Del-Ti-MWW, has been prepared by delaminating the lamellar precursor of Ti-MWW, which is postsynthesized from highly deboronated MWW zeolite with the assistance of cyclic amine. The amount of organic base used for supporting surfactant in swelling the layered structure should be controlled carefully to delaminate efficiently without the collapse of the structure. Ultrasound treatment is demonstrated to delaminate the swollen material more completely. Del-Ti-MWW materials have a large surface area, which mitigates effectively the steric restrictions imposed by conventional microporous titanosilicates to bulky molecules. Del-Ti-MWW, maintaining the fundamental structure of MWW zeolite and tetrahedral Ti species in the framework position, proves to be superior to TS-1, Ti-Beta, three-dimensional Ti-MWW and even mesoporous Ti-MCM-41 in the epoxidation of a wide range of bulky alkenes with hydrogen peroxide.",

author = "Peng Wu and Duangamol Nuntasri and Juanfang Ruan and Yueming Liu and Minyuan He and Weibin Fan and Osamu Terasaki and Takashi Tatsumi",

year = "2004",

month = dec,

day = "16",

doi = "10.1021/jp037459a",

language = "英语",

volume = "108",

pages = "19126--19131",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

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}

TY - JOUR

T1 - Delamination of Ti-MWW and high efficiency in epoxidation of alkenes with various molecular sizes

AU - Wu, Peng

AU - Nuntasri, Duangamol

AU - Ruan, Juanfang

AU - Liu, Yueming

AU - He, Minyuan

AU - Fan, Weibin

AU - Terasaki, Osamu

AU - Tatsumi, Takashi

PY - 2004/12/16

Y1 - 2004/12/16

N2 - A new titanosilicate, named Del-Ti-MWW, has been prepared by delaminating the lamellar precursor of Ti-MWW, which is postsynthesized from highly deboronated MWW zeolite with the assistance of cyclic amine. The amount of organic base used for supporting surfactant in swelling the layered structure should be controlled carefully to delaminate efficiently without the collapse of the structure. Ultrasound treatment is demonstrated to delaminate the swollen material more completely. Del-Ti-MWW materials have a large surface area, which mitigates effectively the steric restrictions imposed by conventional microporous titanosilicates to bulky molecules. Del-Ti-MWW, maintaining the fundamental structure of MWW zeolite and tetrahedral Ti species in the framework position, proves to be superior to TS-1, Ti-Beta, three-dimensional Ti-MWW and even mesoporous Ti-MCM-41 in the epoxidation of a wide range of bulky alkenes with hydrogen peroxide.

AB - A new titanosilicate, named Del-Ti-MWW, has been prepared by delaminating the lamellar precursor of Ti-MWW, which is postsynthesized from highly deboronated MWW zeolite with the assistance of cyclic amine. The amount of organic base used for supporting surfactant in swelling the layered structure should be controlled carefully to delaminate efficiently without the collapse of the structure. Ultrasound treatment is demonstrated to delaminate the swollen material more completely. Del-Ti-MWW materials have a large surface area, which mitigates effectively the steric restrictions imposed by conventional microporous titanosilicates to bulky molecules. Del-Ti-MWW, maintaining the fundamental structure of MWW zeolite and tetrahedral Ti species in the framework position, proves to be superior to TS-1, Ti-Beta, three-dimensional Ti-MWW and even mesoporous Ti-MCM-41 in the epoxidation of a wide range of bulky alkenes with hydrogen peroxide.

UR - https://www.scopus.com/pages/publications/10944235104

U2 - 10.1021/jp037459a

DO - 10.1021/jp037459a

M3 - 文章

AN - SCOPUS:10944235104

SN - 1520-6106

VL - 108

SP - 19126

EP - 19131

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 50

ER -

Delamination of Ti-MWW and high efficiency in epoxidation of alkenes with various molecular sizes

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