Unraveling the role of support surface hydroxyls and its effect on the selectivity of C2 species over Rh/γ-Al2O3 catalyst in syngas conversion: A theoretical study

2016 ◽  
Vol 379 ◽  
pp. 384-394 ◽  
Author(s):  
Riguang Zhang ◽  
Tian Duan ◽  
Baojun Wang ◽  
Lixia Ling
Keyword(s):  
Theoretical Study ◽  
Support Surface ◽  
Syngas Conversion ◽  
Surface Hydroxyls ◽  
Al2o3 Catalyst

Effect of Surface Hydroxyls on CO2 Hydrogenation Over Cu/γ-Al2O3 Catalyst: A Theoretical Study

2011 ◽  
Vol 115 (40) ◽  
pp. 19811-19818 ◽  
Author(s):  
Riguang Zhang ◽  
Baojun Wang ◽  
Hongyan Liu ◽  
Lixia Ling
Keyword(s):  
Theoretical Study ◽  
Co2 Hydrogenation ◽  
Surface Hydroxyls ◽  
Al2o3 Catalyst ◽  
Effect Of Surface

Role of Man in Production and Social Systems Based on Digital Technologies

2020 ◽  
pp. 6-13
Author(s):  
V. K. Potemkin
Keyword(s):  
Theoretical Study ◽  
Social Systems ◽  
Digital Technologies ◽  
Changing Role ◽  
Consistent Approach ◽  
Social Improvement

The article presents the results of a theoretical study of the influence processes of the developed digital technologies and the activities of enterprises and organizations on the changing role of man in labor and their social improvement. The necessity of a balanced and consistent approach to create conditions for the use of digital technologies in practical activities and determining the con- sequences not only in enterprises and organizations, but also in the conscious behavior and social realities of all workers, without exception, is substantiated. The main directions of the development of digital technologies are determined, involving the wide participation of workers in their use in enterprises and organizations.

scholarly journals The Role of La2O3 in Enhancement the Radiation Shielding Efficiency of the Tellurite Glasses: Monte-Carlo Simulation and Theoretical Study

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 3913
Author(s):  
Aljawhara H. Almuqrin ◽  
Mohamed Hanfi ◽  
K. G. Mahmoud ◽  
M. I. Sayyed ◽  
Hanan Al-Ghamdi ◽  
...  
Keyword(s):  
Monte Carlo Simulation ◽  
Theoretical Study ◽  
Radiation Shielding ◽  
Photon Flux ◽  
Transmission Factor ◽  
Tellurite Glasses ◽  
Attenuation Coefficients ◽  
Binary Glass ◽  
Buildup Factors

The radiation shielding competence was examined for a binary glass system xLa2O3 + (1 − x) TeO2 where x = 5, 7, 10, 15, and 20 mol% using MCNP-5 code. The linear attenuation coefficients (LACs) of the glasses were evaluated, and it was found that LT20 glass has the greatest LAC, while LT5 had the least LAC. The transmission factor (TF) of the glasses was evaluated against thicknesses at various selected energies and was observed to greatly decrease with increasing thickness; for example, at 1.332 MeV, the TF of the LT5 glass decreased from 0.76 to 0.25 as the thickness increased from 1 to 5 cm. The equivalent atomic number (Zeq) of the glasses gradually increased with increasing photon energy above 0.1 MeV, with the maximum values observed at around 1 MeV. The buildup factors were determined to evaluate the accumulation of photon flux, and it was found that the maximum values for both can be seen at around 0.8 MeV. This research concluded that LT20 has the greatest potential in radiation shielding applications out of the investigated glasses due to the glass having the most desirable parameters.

scholarly journals Cover Feature: Impurity Control in Catalyst Design: The Role of Sodium in Promoting and Stabilizing Co and Co 2 C for Syngas Conversion (ChemCatChem 4/2021)

ChemCatChem ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 1036-1036
Author(s):  
Arun S. Asundi ◽  
Adam S. Hoffman ◽  
Sindhu S. Nathan ◽  
Alexey Boubnov ◽  
Simon R. Bare ◽  
...  
Keyword(s):  
Catalyst Design ◽  
Syngas Conversion ◽  
Impurity Control

Role of (H2O)n (n = 2–3) Clusters on the HO2 + O3 Reaction: A Theoretical Study

2015 ◽  
Vol 120 (8) ◽  
pp. 1560-1568 ◽  
Author(s):  
Luís P. Viegas ◽  
António J. C. Varandas
Keyword(s):  
Theoretical Study

Theoretical study on the role of cooperative solvent molecules in the neutral hydrolysis of ketene

2010 ◽  
Vol 127 (5-6) ◽  
pp. 493-506 ◽  
Author(s):  
Xiao-Peng Wu ◽  
Xi-Guang Wei ◽  
Xiao-Ming Sun ◽  
Yi Ren ◽  
Ning-Bew Wong ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Solvent Molecules ◽  
Hydrolysis Of

Promoter role of tungsten in W-Pd/Al2O3 catalyst for direct synthesis of H2O2: Modification of Pd/PdO ratio

2021 ◽  
pp. 118392
Author(s):  
Meijia Zhang ◽  
Yibin Luo ◽  
Dengfeng Wu ◽  
Qian Li ◽  
Haoxiang Xu ◽  
...  
Keyword(s):  
Direct Synthesis ◽  
Al2o3 Catalyst

General promoting effect of polydopamine on supported noble metal catalysts

2017 ◽  
Vol 5 (39) ◽  
pp. 20789-20796 ◽  
Author(s):  
Mingwei Zhang ◽  
Guozhu Li ◽  
Xiaoqing Sun ◽  
Yujiao Jiang ◽  
Xiangwen Zhang
Keyword(s):  
Noble Metal ◽  
Theoretical Study ◽  
Metal Catalysts ◽  
Promoting Effect ◽  
Noble Metal Catalysts

A joint experimental–theoretical study has been conducted to investigate the role of polydopamine as an interface facilitator for supported noble metal catalysts.

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