scholarly journals Interplay of the adsorption of light and heavy paraffins in hydroisomerization over H-beta zeolite

2019 ◽  
Vol 9 (19) ◽  
pp. 5368-5382 ◽  
Author(s):  
Pedro S. F. Mendes ◽  
Céline Chizallet ◽  
Javier Pérez-Pellitero ◽  
Pascal Raybaud ◽  
João M. Silva ◽  
...  
Keyword(s):  
Beta Zeolite ◽  
Zeolite P

Hydroisomerization: controlling selectivity by tuning the Pt/zeolite properties.

Transformation synthesis of aluminosilicate SSZ-39 zeolite from ZSM-5 and beta zeolite

2019 ◽  
Vol 7 (9) ◽  
pp. 4420-4425 ◽  
Author(s):  
Hao Xu ◽  
Wei Chen ◽  
Qinming Wu ◽  
Chi Lei ◽  
Juan Zhang ◽  
...  
Keyword(s):  
Beta Zeolite ◽  
Zeolite P

Aluminosilicate SSZ-39 zeolite has been prepared by transformation from ZSM-5 and beta zeolite in the presence of N,N-diethyl-cis-2,6-dimethylpiperidinium hydroxide.

Fluoride etching opens access for bulky molecules to active sites in microporous Ti-beta zeolite

2020 ◽  
Vol 4 (10) ◽  
pp. 2982-2989
Author(s):  
Guoju Yang ◽  
Ziyi Qiu ◽  
Ji Han ◽  
Xiaoxin Chen ◽  
Jihong Yu
Keyword(s):  
Active Sites ◽  
Beta Zeolite ◽  
Zeolite P ◽  
Chemically Selective

Non-chemically selective fluoride etching opens access for bulky molecules to active sites in microporous Ti-beta zeolite.

scholarly journals Readily available Ti-beta as an efficient catalyst for greener and sustainable production of campholenic aldehyde

2019 ◽  
Vol 9 (16) ◽  
pp. 4293-4303 ◽  
Author(s):  
Marta Puche Panadero ◽  
Alexandra Velty
Keyword(s):  
Sustainable Production ◽  
Beta Zeolite ◽  
Synthetic Route ◽  
Efficient Catalyst ◽  
Campholenic Aldehyde ◽  
Zeolite P

Different Ti-beta zeolite samples were prepared following a convenient and optimized post-synthetic route and starting from commercial Al-beta zeolite.

A strategy of ketalization for the catalytic selective dehydration of biomass-based polyols over H-beta zeolite

2018 ◽  
Vol 20 (3) ◽  
pp. 634-640 ◽  
Author(s):  
Penghua Che ◽  
Fang Lu ◽  
Xiaoqin Si ◽  
Hong Ma ◽  
Xin Nie ◽  
...  
Keyword(s):  
Beta Zeolite ◽  
Sugar Alcohols ◽  
Vicinal Diol ◽  
Zeolite P

A strategy is presented to control the etherification site in sugar alcohols via ketalization of the terminal vicinal-diol group with a ketone.

One-pot cascade transformation of xylose into γ-valerolactone (GVL) over bifunctional Brønsted–Lewis Zr–Al-beta zeolite

2016 ◽  
Vol 18 (21) ◽  
pp. 5777-5781 ◽  
Author(s):  
Blanca Hernández ◽  
Jose Iglesias ◽  
Gabriel Morales ◽  
Marta Paniagua ◽  
Clara López-Aguado ◽  
...  
Keyword(s):  
Zeolite Catalysts ◽  
Beta Zeolite ◽  
Cascade Process ◽  
Synthetic Methodology ◽  
One Pot ◽  
The One ◽  
Zeolite P

Bifunctional Brønsted–Lewis, Zr- and Al-containing beta zeolite catalysts prepared by a post-synthetic methodology promote the one-pot production of γ-valerolactone (GVL) from xylose in alcohol media through a cascade process.

Rapid, Non-Toxic Synthesis of Beta Zeolites

2018 ◽  
Author(s):  
Felix Hemmann ◽  
Jonathan Hackebeil ◽  
Andreas Lißner ◽  
Florian Mertens
Keyword(s):  
Hydrofluoric Acid ◽  
Molecular Sieves ◽  
Toxic Chemicals ◽  
Lewis Acidity ◽  
Beta Zeolite ◽  
Seeded Growth ◽  
Related Research ◽  
Beta Zeolites ◽  
Growth Method ◽  
Fast Synthesis

Molecular sieves with beta zeolite topology are promising catalysts for various reactions as they exhibits extraordinary Lewis acidity. However, their industrial application and related research in academica is hindered because their synthesis is time consuming and typically involves toxic chemicals as hydrofluoric acid. Therefore, tetraethylammonium fluorid was tested as a non-toxic fluotide source for the synthesis of beta zeolites. In combination with the previously reported nano-seeded growth method, a fast synthesis of beta zeolites only involving non-toxic chemicals was possible. Synthesized zeolites show comparable selectivity in the Bayer-Villinger oxidation as conventional zeolites synthesized with hydrofluoric acid.<br>

Electron transfers in graphitized HZSM-5 zeolite

2020 ◽  
Author(s):  
Alain Moissette ◽  
Isabelle Gener-Batonneau ◽  
Matthieu Hureau ◽  
Ludovic Pinard ◽  
Hervé Vezin ◽  
...  
Keyword(s):  
Guest Molecule ◽  
Zeolite P ◽  
Electron Transfers

In the present work, we report the electron transfers occurring after ionization of the guest molecule of t-stilbene incorporated in graphitized HZSM-5 zeolite and we compare these results with the...

Gating control effect facilitates excellent gas selectivity in a novel Na-SSZ-27 zeolite

2021 ◽  
Vol 57 (34) ◽  
pp. 4170-4173
Author(s):  
Chao Zhao ◽  
Jiamin Yuan ◽  
Xiaomin Tang ◽  
Wei Chen ◽  
Xianfeng Yi ◽  
...  
Keyword(s):  
Control Effect ◽  
Crucial Effect ◽  
Gas Selectivity ◽  
Zeolite P

A novel Na-SSZ-27 zeolite was demonstrated to possess excellent H2/CO2 diffusion selectivity due to the crucial effect of the “gating control” of the 8-ring windows.

Ultrafast synthesis of high-silica Beta zeolite from dealuminated MOR by interzeolite transformation for methanol to propylene reactions

2021 ◽  
Vol 314 ◽  
pp. 110894
Author(s):  
Bowen Wang ◽  
Li Ren ◽  
Jingyan Zhang ◽  
Rusi Peng ◽  
Shaoqing Jin ◽  
...  
Keyword(s):  
Beta Zeolite ◽  
High Silica

scholarly journals Ni–rGO–zeolite nanocomposite: An efficient heterogeneous catalyst for one–pot synthesis of triazoles in water

2021 ◽  
Author(s):  
Prasun Choudhury ◽  
Shreyasi Chattopadhyay ◽  
Goutam De ◽  
Basudeb Basu
Keyword(s):  
Heterogeneous Catalyst ◽  
Y Zeolite ◽  
One Pot ◽  
Important Group ◽  
One Pot Synthesis ◽  
Nanocomposite Catalyst ◽  
Zeolite P ◽  
Efficient Heterogeneous Catalyst

An important group of pharmaceutical material, 1,2,3-triazoles has been synthesised using a Ni-based nanocomposite catalyst (Ni–rGO–zeolite) through azide alkyne cycloaddition (NiAAC). First, GO-zeolite hybrid was prepared through protonation of Na-Y-zeolite...

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