Hosting AlCl3 on ternary metal oxide composites for catalytic oligomerization of 1-decene: Revealing the role of supports via performance evaluation and DFT calculation

Author(s):  
Yue Lou ◽  
Yuxiang Chen ◽  
Yang Zhao ◽  
Cheng Qian ◽  
Cheng Niu ◽  
...  
Author(s):  
G. N. Gerasimov ◽  
V. F. Gromov ◽  
M. I. Ikim ◽  
L. I. Trachtenberg

Abstract The relationship between the structure and properties of nanoscale conductometric sensors based on binary mixtures of metal oxides in the detection of reducing gases in the environment is considered. The sensory effect in such systems is determined by the chemisorption of oxygen molecules and the detected gas on the surface of metal oxide catalytically active particles, the transfer of the reaction products to electron-rich nanoparticles, and subsequent reactions. Particular attention is paid to the doping of nanoparticles of the sensitive layer. In particular, the effect of doping on the concentration of oxygen vacancies, the activity of oxygen centers, and the adsorption properties of nanoparticles is discussed. In addition, the role of heterogeneous contacts is analyzed.


Author(s):  
B. Dikici ◽  
M. L. Pantoya ◽  
R. J. Jouet

In this study, two types of nano-Al/metal oxide composites are examined. The first Al sample is passivated with Al2O3 and treated with perfluoroalkyl carboxylic acid (C13F27COOH). The second Al sample is devoid of an alumina shell and instead passivated with perfluoroalkyl carboxylic acid (C13F27COOH). The goal of this study is to understand the role of the passivation shell and associated reaction mechanism on flame propagation. Results show that when there is no alumina passivation shell encasing the Al core the flame propagation rates are reduced by two orders of magnitude. All flame propagation experiments were performed in a confined flame tube apparatus which may not be ideal for characterizing materials with significantly different ignition sensitivities. Results indicate that flame speeds measured with this apparatus are dependent on the ignition sensitivity of the mixture. Acid treated Al particles are shown to be roughly five times less ignition sensitive than the Al particles with no acid treatment; however, both particles produce roughly the same heat of combustion in thermal equilibrium measurements.


RSC Advances ◽  
2014 ◽  
Vol 4 (8) ◽  
pp. 3823-3851 ◽  
Author(s):  
Ravi Kant Upadhyay ◽  
Navneet Soin ◽  
Susanta Sinha Roy

ACS Omega ◽  
2020 ◽  
Vol 5 (7) ◽  
pp. 3405-3417 ◽  
Author(s):  
Avijit Biswal ◽  
Prasanna Kumar Panda ◽  
Achyuta Nanda Acharya ◽  
Subhashree Mohapatra ◽  
Nibedita Swain ◽  
...  

2016 ◽  
pp. 55-94
Author(s):  
Pier Luigi Marchini ◽  
Carlotta D'Este

The reporting of comprehensive income is becoming increasingly important. After the introduction of Other Comprehensive Income (OCI) reporting, as required by the 2007 IAS 1-revised, the IASB is currently seeking inputs from investors on the usefulness of unrealized gains and losses and on the role of comprehensive income. This circumstance is of particular relevance in code law countries, as local pre-IFRS accounting models influence financial statement preparers and users. This study aims at investigating the role played by unrealized gains and losses reporting on users' decision process, by examining the impact of OCI on the Italian listed companies RoE ratio and by surveying a sample of financial analysts, also content analysing their formal reports. The results show that the reporting of comprehensive income does not affect the financial statement users' decision process, although it statistically affects Italian listed entities' performance.


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