Surface‐Dependent Activation of Model α‐Al 2 O 3 ‐Supported P‐Doped Hydrotreating Catalysts Prepared by Spin Coating

2020 ◽  
Vol 26 (64) ◽  
pp. 14623-14638
Author(s):  
Ricardo Garcia de Castro ◽  
Jérémy Bertrand ◽  
Baptiste Rigaud ◽  
Elodie Devers ◽  
Mathieu Digne ◽  
...  
2012 ◽  
pp. 1805-1808 ◽  
Author(s):  
L. Chibane ◽  
M.S. Belkaid ◽  
M. Pasquinelli ◽  
H. Derbal-Habak ◽  
J.J. Simon ◽  
...  

2019 ◽  
Vol 7 (1) ◽  
pp. 28
Author(s):  
KOMARAIAH DURGAM ◽  
RADHA EPPA ◽  
REDDY M. V. RAMANA ◽  
KUMAR J. SIVA ◽  
R. SAYANNA ◽  
...  

2007 ◽  
Vol 32 (4) ◽  
pp. 359-364
Author(s):  
Ali Aksas ◽  
Azeddine Chelouche ◽  
Boubekeur Boudine ◽  
Ouahiba Halimi ◽  
Djamel Djouadi
Keyword(s):  

Author(s):  
Atefeh Nazari Setayesh ◽  
Hassan Sedghi

Background: In this work, CdS thin films were synthesized by sol-gel method (spin coating technique) on glass substrates to investigate the optical behavior of the film. Methods: Different substrate spin coating speeds of 2400, 3000, 3600 rpm and different Ni dopant concentrations of 0 wt.%, 2.5 wt.%, 5 wt.%) were investigated. The optical properties of thin films such as refraction index, extinction coefficient, dielectric constant and optical band gap energy of the layers were discussed using spectroscopic ellipsometry method in the wavelength range of 300 to 900 nm. Results: It can be deduced that substrate rotation speed and dopant concentration has influenced the optical properties of thin films. By decreasing rotation speed of the substrate which results in films with more thicknesses, more optical interferences were appeared in the results. Conclusion: The samples doped with Ni comparing to pure ones have had more optical band gap energy.


Proceedings ◽  
2018 ◽  
Vol 2 (13) ◽  
pp. 952 ◽  
Author(s):  
Wangi Sari ◽  
Simon Leigh ◽  
James Covington

In this paper we report on the development tungsten oxide based chemiresistive sensors for the monitoring of oxygen at low temperatures (T ≤ 400 °C) in dry and humid air. The sensors were deposited onto alumina substrate by a combination of spin coating and a photolithographic process to define the sensing area. Our results show that the sensors comply with a linear relationship over a 0 to 20% concentration range, with a high response towards oxygen. The highest response was observed at 350 °C (ΔR/Ra = 7.8) in humid and in dry air (ΔR/Ra = 18). This result is a significant improvement over our previous experiments and we believe to take the concept of a metal-oxide based oxygen sensor a step closer.


2017 ◽  
Vol 623 ◽  
pp. 14-18 ◽  
Author(s):  
Fenglin Tang ◽  
Chao Mei ◽  
Peiyu Chuang ◽  
Tingting Song ◽  
Hailin Su ◽  
...  

2019 ◽  
Vol 11 (11) ◽  
pp. 10998-11005 ◽  
Author(s):  
Kun Wang ◽  
Nuri Hohn ◽  
Lucas P. Kreuzer ◽  
Tobias Widmann ◽  
Martin Haese ◽  
...  
Keyword(s):  

2009 ◽  
Vol 186 (1) ◽  
pp. 128-132 ◽  
Author(s):  
Kongfa Chen ◽  
Yanting Tian ◽  
Zhe Lü ◽  
Na Ai ◽  
Xiqiang Huang ◽  
...  

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