scholarly journals Analysis of Reaction Mechanism for Supported Metal Catalysts by Means of Time-Resolved XAFS Technique

2016 ◽  
Vol 59 (11) ◽  
pp. 293-300 ◽  
Author(s):  
Shohei YAMASHITA ◽  
Siwaruk CHOTIWAN ◽  
Yusaku YAMAMOTO ◽  
Misaki KATAYAMA ◽  
Yasuhiro INADA
Keyword(s):  
Reaction Mechanism ◽  
Metal Catalysts ◽  
Supported Metal Catalysts ◽  
Time Resolved ◽  
Supported Metal

Reaction mechanism of acetylene hydrochlorination on defective carbon supported ruthenium catalysts by DFT calculations and experimental approaches

2022 ◽  
Author(s):  
Xiaolong Wang ◽  
Dong Fan ◽  
Guojun Lan ◽  
Zaizhe Cheng ◽  
Xiucheng Sun ◽  
...  
Keyword(s):  
Reaction Mechanism ◽  
Dft Calculations ◽  
High Performance ◽  
Metal Catalysts ◽  
Ruthenium Catalysts ◽  
Supported Metal Catalysts ◽  
Acetylene Hydrochlorination ◽  
Experimental Approaches ◽  
Supported Metal

It is critical to identify the reaction mechanism of carbon supported metal catalysts for the exploration of high-performance catalyst in acetylene hydrochlorination. Herein, we reported a systematically study on the...

High-Resolution Scanning Electron Microscopy and Microanalysis of Supported Metal Catalysts

1999 ◽  
Vol 589 ◽  
Author(s):  
Jingyue Liu
Keyword(s):  
High Resolution ◽  
Low Voltage ◽  
Supported Catalysts ◽  
Metal Catalysts ◽  
Supported Metal Catalysts ◽  
Surface Sensitivity ◽  
Brightness Field ◽  
Backscattered Electron ◽  
Enhanced Surface ◽  
Supported Metal

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.

C-H bond functionalization using Pd and Au supported catalysts with mechanistic insights of the active species

Synthesis ◽  
2021 ◽  
Author(s):  
Tamao Ishida ◽  
Zhenzhong Zhang ◽  
Haruno Murayama ◽  
Eiji Yamamoto ◽  
Makoto Tokunaga
Keyword(s):  
Aromatic Compounds ◽  
Reaction Mechanisms ◽  
Bond Activation ◽  
Supported Catalysts ◽  
Metal Catalysts ◽  
Active Species ◽  
Supported Metal Catalysts ◽  
Bond Functionalization ◽  
Bond Forming ◽  
Supported Metal

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

Catalytically Active and Spectator Ce3+in Ceria-Supported Metal Catalysts

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