Mn/Al2O3 and Mn/ZrO2 as selective catalysts for the synthesis of bis(indolyl)methanes: The role of surface acidity and particle morphology

2013 ◽  
Vol 19 (1) ◽  
pp. 337-346 ◽  
Author(s):  
M. Rekha ◽  
H.R. Manjunath ◽  
N. Nagaraju
Keyword(s):  
Surface Acidity ◽  
Particle Morphology

Influence of aluminium impregnation on activated carbon for enhanced desulfurization of DBT at ambient temperature: Role of surface acidity and textural properties

2016 ◽  
Vol 303 ◽  
pp. 489-500 ◽  
Author(s):  
Saheed A. Ganiyu ◽  
Khalid Alhooshani ◽  
Kazeem O. Sulaiman ◽  
Muhammad Qamaruddin ◽  
Idris A. Bakare ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Ambient Temperature ◽  
Surface Acidity ◽  
Textural Properties

scholarly journals Looking for the “Dream Catalyst” for Hydrogen Peroxide Production from Hydrogen and Oxygen

Catalysts ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 251 ◽  
Author(s):  
Federica Menegazzo ◽  
Michela Signoretto ◽  
Elena Ghedini ◽  
Giorgio Strukul
Keyword(s):  
Hydrogen Peroxide ◽  
Heterogeneous Catalysts ◽  
Direct Synthesis ◽  
Particle Morphology ◽  
Synthetic Methods ◽  
Side Reactions ◽  
Catalyst Morphology ◽  
And Performance ◽  
The Ideal

The reaction between hydrogen and oxygen is in principle the simplest method to form hydrogen peroxide, but it is still a “dream process”, thus needing a “dream catalyst”. The aim of this review is to analyze critically the different heterogeneous catalysts used for the direct synthesis of H2O2 trying to determine the features that the ideal or “dream catalyst” should possess. This analysis will refer specifically to the following points: (i) the choice of the metal; (ii) the metal promoters used to improve the activity and/or the selectivity; (iii) the role of different supports and their acidic properties; (iv) the addition of halide promoters to inhibit undesired side reactions; (v) the addition of other promoters; (vi) the effects of particle morphology; and (vii) the effects of different synthetic methods on catalyst morphology and performance.

The role of particle morphology on concrete fracture behaviour: A meso-scale modelling approach

2020 ◽  
Vol 134 ◽  
pp. 106096 ◽  
Author(s):  
Deheng Wei ◽  
Ryan C. Hurley ◽  
Leong Hien Poh ◽  
Daniel Dias-da-Costa ◽  
Yixiang Gan
Keyword(s):  
Fracture Behaviour ◽  
Particle Morphology ◽  
Concrete Fracture ◽  
Scale Modelling ◽  
Meso Scale ◽  
Modelling Approach

The Role of Outer-Sphere Surface Acidity in Alkene Epoxidation Catalyzed by Calixarene−Ti(IV) Complexes

2007 ◽  
Vol 129 (50) ◽  
pp. 15585-15595 ◽  
Author(s):  
Justin M. Notestein ◽  
Leandro R. Andrini ◽  
Felix G. Requejo ◽  
Alexander Katz ◽  
Enrique Iglesia
Keyword(s):  
Surface Acidity ◽  
Outer Sphere ◽  
Sphere Surface

Role of particle morphology in the yielding behavior of dense thermosensitive microgel suspensions

2019 ◽  
Vol 137 (17) ◽  
pp. 48625 ◽  
Author(s):  
Kiran Kaithakkal Jathavedan ◽  
Fayis Kanheerampockil ◽  
Suresh Bhat
Keyword(s):  
Particle Morphology ◽  
Yielding Behavior

Impact of Calcium Phosphate Particle Morphology on Osteoconduction: an In Vivo Study

2007 ◽  
Vol 361-363 ◽  
pp. 1237-1240 ◽  
Author(s):  
Christophe Drouet ◽  
Ronan Barré ◽  
Gérard Brunel ◽  
Gérard Dechambre ◽  
Edmond Benqué ◽  
...  
Keyword(s):  
Hydrothermal Synthesis ◽  
Chemical Composition ◽  
Calcium Phosphate ◽  
Bone Regeneration ◽  
Particle Morphology ◽  
In Vivo Study ◽  
Total Absence

Apatite/β−TCP particles exhibiting non-conventional urchin-like morphology were prepared by hydrothermal synthesis. Their implantation in the rat calvarium was followed during 60 days. A total absence of osteoconduction was observed despite a favorable chemical composition, stressing the fundamental role of particle morphology on bone regeneration. Results are discussed in relation with other literature data. Possible explanations include the disfavored accumulation of biological mediators due to the acicular shape of the particles and/or a limited accessibility for cells.

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