Synthesis and Characterisation of Hierarchically Structured Titanium Silicalite-1 Zeolites with Large Intracrystalline Macropores

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F19%3A00517543" target="_blank" >RIV/61388955:_____/19:00517543 - isvavai.cz</a>

Alternative codes found

RIV/00216208:11310/19:10403761

Result on the web

<a href="http://hdl.handle.net/11104/0302879" target="_blank" >http://hdl.handle.net/11104/0302879</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/chem.201903287" target="_blank" >10.1002/chem.201903287</a>

Result language

angličtina

Original language name

Synthesis and Characterisation of Hierarchically Structured Titanium Silicalite-1 Zeolites with Large Intracrystalline Macropores

Original language description

The successful synthesis of hierarchically structured titanium silicalite-1 (TS-1) with large intracrystalline macropores by steam-assisted crystallisation of mesoporous silica particles is reported. The macropore topology was imaged in 3D by using electron tomography and synchrotron radiation-based ptychographic X-ray computed tomography, revealing interconnected macropores within the crystals accounting for about 30 % of the particle volume. The study of the macropore formation mechanism revealed that the mesoporous silica particles act as a sacrificial macropore template during the synthesis. Silicon-to-titanium ratio of the macroporous TS-1 samples was successfully tuned from 100 to 44. The hierarchically structured TS-1 exhibited high activity in the liquid phase epoxidation of 2-octene with hydrogen peroxide. The hierarchically structured TS-1 surpassed a conventional nano-sized TS-1 sample in terms of alkene conversion and showed comparable selectivity to the epoxide. The flexible synthesis route described here can be used to prepare hierarchical zeolites with improved mass transport properties for other selective oxidation reactions.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

10403 - Physical chemistry

Project

—

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2019

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Chemistry - A European Journal

ISSN

0947-6539

e-ISSN

—

Volume of the periodical

25

Issue of the periodical within the volume

63

Country of publishing house

DE - GERMANY

Number of pages

11

Pages from-to

14430-14440

UT code for WoS article

000490313000001

EID of the result in the Scopus database

2-s2.0-85074102156