Combining Benzyl Alcohol Oxidation Saturation Kinetics and Hammett Studies as Mechanistic Tools for Examining Supported Metal Catalysts

ACS Catalysis ◽  
2020 ◽  
Vol 10 (17) ◽  
pp. 10207-10215
Author(s):  
Akbar Mahdavi-Shakib ◽  
Janine Sempel ◽  
Lauren Babb ◽  
Aisha Oza ◽  
Maya Hoffman ◽  
...  
1999 ◽  
Vol 589 ◽  
Author(s):  
Jingyue Liu

AbstractThe use of a high-brightness field emission gun and novel secondary electron detection systems makes it possible to acquire nanometer-resolution surface images of bulk materials, even at low electron beam voltages. The advantages of low-voltage SEM include enhanced surface sensitivity, reduced sample charging on non-conducting materials, and significantly reduced electron range and interaction volume. High-resolution images formed by collecting the backscattered electron signal can give information about the size and spatial distribution of metal nanoparticles in supported catalysts. Low-voltage XEDS can provide compositional information of bulk samples with enhanced surface sensitivity and significantly improved spatial resolution. High-resolution SEM techniques enhance our ability to detect and, subsequently, analyze the composition of nanoparticles in supported metal catalysts. Applications of high-resolution SEM imaging and microanalysis techniques to the study of industrial supported catalysts are discussed.


2021 ◽  
Author(s):  
Kadriye Özlem Hamaloğlu ◽  
Rukiye Babacan Tosun ◽  
Serap Ulu ◽  
Hakan Kayi ◽  
Cengiz Kavaklı ◽  
...  

A synergistic catalyst in the form of monodisperse-porous CeO2 microspheres supported Pd nanoparticles (Pd NPs) was synthesized. CeO2 microspheres 4 μm in size were obtained by a newly developed “sol-gel...


Synthesis ◽  
2021 ◽  
Author(s):  
Tamao Ishida ◽  
Zhenzhong Zhang ◽  
Haruno Murayama ◽  
Eiji Yamamoto ◽  
Makoto Tokunaga

The C–H functionalization has been extensively studied as a direct C–C bond forming reaction with high atomic efficiency. The efforts have also been made on the reaction using supported catalysts, which are superior in terms of catalyst separation from the reaction mixture and reusability. In this review, an overview of the C–H functionalization reactions, especially for Pd and Au supported catalysts will be described. In particular, we discuss reaction mechanisms, active species, leaching, reusability, etc. 1 Introduction 2 Types of supported metal catalysts and their active species 3 Modes of C–H bond activation 4 Oxidative C–H C–H coupling of aryl compounds 5 C–H C–H coupling where one side is aromatic 6 C–H acylation of aromatic compounds and related reactions 7 Conclusion


ChemCatChem ◽  
2014 ◽  
Vol 6 (12) ◽  
pp. 3464-3473 ◽  
Author(s):  
Aditya Savara ◽  
Carine E. Chan-Thaw ◽  
Ilenia Rossetti ◽  
Alberto Villa ◽  
Laura Prati

2015 ◽  
Vol 54 (30) ◽  
pp. 8728-8731 ◽  
Author(s):  
René Kopelent ◽  
Jeroen A. van Bokhoven ◽  
Jakub Szlachetko ◽  
Jacinta Edebeli ◽  
Cristina Paun ◽  
...  

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