Probing zeolites by vibrational spectroscopies
This review addresses the most relevant aspects of vibrational spectroscopies (IR, Raman
and INS) applied to zeolites and zeotype materials. Surface Brønsted and Lewis acidity and …
and INS) applied to zeolites and zeotype materials. Surface Brønsted and Lewis acidity and …
Combined solid-state NMR, FT-IR and computational studies on layered and porous materials
Understanding the structure–property relationship of solids is of utmost relevance for
efficient chemical processes and technological applications in industries. This contribution …
efficient chemical processes and technological applications in industries. This contribution …
Identification and characterization of surface hydroxyl groups by infrared spectroscopy
K Hadjiivanov - Advances in Catalysis, 2014 - Elsevier
Surface hydroxyl groups are active centers in many catalytic reactions and can play an
important role during catalyst preparation. In this chapter, the application of infrared …
important role during catalyst preparation. In this chapter, the application of infrared …
The acidity of zeolites: concepts, measurements and relation to catalysis: a review on experimental and theoretical methods for the study of zeolite acidity
In this article, we considered all aspects of acidity (nature of acid sites, strength, density, etc.)
in solid catalysts and in zeolites in particular. After reminding the definition of acidity in liquid …
in solid catalysts and in zeolites in particular. After reminding the definition of acidity in liquid …
Steaming of zeolite BEA and its effect on acidity: a comparative NMR and IR spectroscopic study
SM Maier, A Jentys, JA Lercher - The Journal of Physical …, 2011 - ACS Publications
The kinetics and impact of steaming on the acid site concentration of zeolite beta were
studied by 1H, 27Al, and 29Si MAS NMR spectroscopy as well as IR spectroscopy of …
studied by 1H, 27Al, and 29Si MAS NMR spectroscopy as well as IR spectroscopy of …
Physicochemical characterization and surface acid properties of mesoporous [Al]-SBA-15 obtained by direct synthesis
In this work,[Al]-SBA-15 samples were prepared by three different direct synthesis methods
and one postsynthesis procedure, aiming to study the influence of the preparation …
and one postsynthesis procedure, aiming to study the influence of the preparation …
Mild-acid-assisted thermal or hydrothermal dealumination of zeolite beta, its regulation to Al distribution and catalytic cracking performance to hydrocarbons
W Wang, W Zhang, Y Chen, X Wen, H Li, D Yuan… - Journal of …, 2018 - Elsevier
The synthesized nanoscale beta zeolites (SiO 2/Al 2 O 3= 25, nanocrystals of 50 nm) were
treated by two different sequential procedures called acid-steaming and acid-calcination …
treated by two different sequential procedures called acid-steaming and acid-calcination …
On the mechanism of the SCR reaction on Fe/HBEA zeolite
D Klukowski, P Balle, B Geiger, S Wagloehner… - Applied Catalysis B …, 2009 - Elsevier
The mechanism of the so-called standard SCR reaction on an efficient HBEA zeolite catalyst
modified with 0.25 wt.% Fe (0.25 Fe/HBEA) was elucidated. The studies were systematically …
modified with 0.25 wt.% Fe (0.25 Fe/HBEA) was elucidated. The studies were systematically …
The role of template structure and synergism between inorganic and organic structure directing agents in the synthesis of UTL zeolite
The extra-large-pore germanosilicates with UTL topology have been synthesized using a
large variety of spiroazocompounds as structure-directing agents. Synthesis conditions were …
large variety of spiroazocompounds as structure-directing agents. Synthesis conditions were …
Catalytic Cracking of 1, 3, 5‐Triisopropylbenzene and Low‐Density Polyethylene over Hierarchical Y Zeolites and Al‐SBA‐15
Catalytic cracking of high molecular weight hydrocarbons underpins the production of fossil
fuels from petroleum vapour and the recycling of polyolefin waste plastic. However, thermal …
fuels from petroleum vapour and the recycling of polyolefin waste plastic. However, thermal …