Consecutive Surfactant-Templating Opens up New Possibilities for Hierarchical Zeolites

2020 ◽  
Vol 20 (2) ◽  
pp. 515-520 ◽  
Author(s):  
Erika De Oliveira Jardim ◽  
Elena Serrano ◽  
Juan Carlos Martínez ◽  
Noemi Linares ◽  
Javier García-Martínez
Keyword(s):  
Hierarchical Zeolites ◽  
Surfactant Templating

scholarly journals Acid Properties of Hierarchical Zeolites Y

Molecules ◽  
2020 ◽  
Vol 25 (5) ◽  
pp. 1044 ◽  
Author(s):  
Mariusz Gackowski ◽  
Jerzy Datka
Keyword(s):  
Synthetic Surfactant ◽  
Special Focus ◽  
Hierarchical Zeolites ◽  
Humid Atmosphere ◽  
Quaternary Ammonium Cations ◽  
Mesoporous Zeolites ◽  
Surfactant Templating ◽  
Acidic Zeolites ◽  
The Impact

The article reviews different strategies towards obtaining mesoporous zeolites Y: desilication; surfactant templating and assembly of zeolite crystals. The impact of those methods on physicochemical properties is covered, with a special focus on the acidity of the samples measured with infrared (IR) spectroscopy. The methods of characterization of acidity are presented. Quaternary ammonium cations used for desilication lead to obtaining crystalline; mesoporous and highly acidic zeolites. Si-OH-Al groups of extremely high acidity can be produced by calcination in a humid atmosphere. When the conditions are optimized, post-synthetic surfactant templating allows crystalline mesoporous zeolite to be obtained with no loss of material. All mesoporous zeolites Y proved to be active catalysts in liquid phase isomerization, catalytic cracking, and other reactions.

Microsized Structures Fabricated with Nanoparticles as Building Blocks

1998 ◽  
Vol 536 ◽  
Author(s):  
Yongchi Tian ◽  
A. D. Dinsmore ◽  
S. B. Qadri ◽  
B. R. Ratna
Keyword(s):  
Radial Growth ◽  
Building Blocks ◽  
Higher Order ◽  
Surfactant Templating ◽  
Order Structures

AbstractHere we report a nanoparticulate route to Y2O3 nanofibers (~50 nm in diameter and a few micrometers in length) and for the radial growth of ZnS spheres (200-800 nm diameter). Well-defined higher order structures are developed upon thermostatically aging the dispersions of monomeric nanocrystals. The shapes of the “macromolecules„ are correlated to primary monomeric nanocrystallites, the growing time and temperature, and surfactant templating agents. It is anticipated that this approach should inspire fabrication of nanoparticulate structures by using primary nanoparticles as monomers.

Ultrafast surfactant-templating of *BEA zeolite: An efficient catalyst for the cracking of polyethylene pyrolysis vapours

2021 ◽  
Vol 412 ◽  
pp. 128566
Author(s):  
Umer Khalil ◽  
Zhendong Liu ◽  
Ce Peng ◽  
Naomichi Hikichi ◽  
Toru Wakihara ◽  
...  
Keyword(s):  
Efficient Catalyst ◽  
Bea Zeolite ◽  
Surfactant Templating

Titania−Sepiolite Nanocomposites Prepared by a Surfactant Templating Colloidal Route

2008 ◽  
Vol 20 (1) ◽  
pp. 84-91 ◽  
Author(s):  
Pilar Aranda ◽  
Robert Kun ◽  
M. Angeles Martín-Luengo ◽  
Sadok Letaïef ◽  
Imre Dékány ◽  
...  
Keyword(s):  
Surfactant Templating

Potential of Sustainable Hierarchical Zeolites in the Valorization of α-Pinene

ChemSusChem ◽  
2015 ◽  
Vol 8 (7) ◽  
pp. 1197-1205 ◽  
Author(s):  
Nicolas Nuttens ◽  
Danny Verboekend ◽  
Aron Deneyer ◽  
Joost Van Aelst ◽  
Bert F. Sels
Keyword(s):  
Hierarchical Zeolites

ChemInform Abstract: Future of Nano-/Hierarchical Zeolites in Catalysis: Gaseous Phase or Liquid Phase System

ChemInform ◽  
2015 ◽  
Vol 46 (17) ◽  
pp. no-no
Author(s):  
Yueer Yan ◽  
Xiao Guo ◽  
Yahong Zhang ◽  
Yi Tang
Keyword(s):  
Liquid Phase ◽  
Gaseous Phase ◽  
Phase System ◽  
Hierarchical Zeolites

Catalytic Properties of Hierarchical Zeolites ZrAl-BEA in the Synthesis of 4-Methoxybenzyl sec-Butyl Ether from Anisaldehyde

2017 ◽  
Vol 53 (2) ◽  
pp. 122-129 ◽  
Author(s):  
M. M. Kurmach ◽  
N. O. Popovych ◽  
P. I. Kyriienko ◽  
P. S. Yaremov ◽  
A. E. Baranchikov ◽  
...  
Keyword(s):  
Catalytic Properties ◽  
Butyl Ether ◽  
Hierarchical Zeolites

Effects of hierarchical zeolites on aromatization of acetylene

2018 ◽  
Vol 303 ◽  
pp. 177-184 ◽  
Author(s):  
Wonsuk Lee ◽  
Taehee Lee ◽  
Hoi-Gu Jang ◽  
Sung June Cho ◽  
Jungkyu Choi ◽  
...  
Keyword(s):  
Hierarchical Zeolites
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