Recent advances in the control and characterization of the porous structure of pillared clay catalysts

A Gil, SA Korili, MA Vicente - Catalysis Reviews, 2008 - Taylor & Francis
Several methods have been developed and applied in recent years in the characterization
of the structure of microporous materials, in general, and of pillared clays, in particular. In the …

Determination of structural modification in acid activated montmorillonite clay by FT-IR spectroscopy

B Tyagi, CD Chudasama, RV Jasra - Spectrochimica Acta Part A: Molecular …, 2006 - Elsevier
The structural modifications and the Bronsted acid sites generated during the acid treatment
of montmorillonite clay with varied concentration of sulphuric acid was determined using FT …

Brønsted and Lewis acidity of modified montmorillonite clay catalysts determined by FT-IR spectroscopy

CR Reddy, YS Bhat, G Nagendrappa, BSJ Prakash - Catalysis Today, 2009 - Elsevier
The surface acidity of different modified montmorillonite clay catalysts, Al3+-exchanged
montmorillonite (Al3+-Mont) and aluminium pillared montmorillonite (Al-PILC) was …

[HTML][HTML] Classical and new insights into the methodology for characterizing adsorbents and metal catalysts by chemical adsorption

A Gil - Catalysis Today, 2023 - Elsevier
The adsorption phenomenon has been used extensively to achieve and explain solid-state
reactions, control contamination, and purify liquids and gases. This process implies the use …

Low-Temperature Synthesis and Photocatalytic Activity of TiO2 Pillared Montmorillonite

GK Zhang, XM Ding, FS He, XY Yu, J Zhou, YJ Hu… - Langmuir, 2008 - ACS Publications
TiO2 pillared montmorillonite (PILM) was synthesized by hydrolyzing TiO2 sol into the
interlayers of montmorillonite (MMT) at low temperatures. It is novel that all the as-prepared …

Preparation, characterization and catalytic activity of titania pillared montmorillonite clays

NN Binitha, S Sugunan - Microporous and mesoporous materials, 2006 - Elsevier
Titania pillared clays are prepared through a novel method using titania sol via colloidal
route as the pillaring agent. Formation of pillared clay (PILC) is proved from the physico …

Acidity in pillared clays: origin and catalytic manifestations

JF Lambert, G Poncelet - Topics in Catalysis, 1997 - Springer
Acidity in pillared clays is a broad topic, and one which has been reviewed before [1-3].
Since it is difficult to be exhaustive, the present contribution is divided in two parts. The first …

Characterization of surface acidity of an acid montmorillonite activated with hydrothermal, ultrasonic and microwave techniques

B Tyagi, CD Chudasama, RV Jasra - Applied Clay Science, 2006 - Elsevier
The surface acidity of montmorillonite treated by conventional hydrothermal reaction with
acids as well as ultrasonic-and microwave-assisted acid digestion was studied using diffuse …

Efficient inhibition of montmorillonite swelling through controlling flexibly structure of piperazine-based polyether Gemini quaternary ammonium salts

L Zhou, Y He, S Gou, Q Zhang, L Liu, L Tang… - Chemical Engineering …, 2020 - Elsevier
Currently, it remains a great challenge to maintain clay stability in water and prevent shear
dispersion of the clay lamellae. Herein, a series of piperazine-based polyether Gemini …

[HTML][HTML] Catalysts based on clay and iron oxide for oxidation of toluene

FGE Nogueira, JH Lopes, AC Silva, RM Lago… - Applied Clay …, 2011 - Elsevier
Two samples of heterogeneous catalysts were prepared by impregnating a raw-clay, a
montmorillonite-rich material, with iron oxides, in order to be used in oxidative reactions of …