Catalytic Activity and Thermal Stability of Arc Plasma Deposited Pt Nano-Particles on CeO2–Al2O3

2015 ◽  
Vol 15 (11) ◽  
pp. 8494-8501 ◽  
Author(s):  
Young Eun Jeong ◽  
Pullur Anil Kumar ◽  
Hee Lack Choi ◽  
Kwan-Young Lee ◽  
Heon Phil Ha
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
Nano Particles ◽  
Arc Plasma ◽  
Thermal Stability Of

Catalytic activity of niobium oxynitride and carbide I. Preparation, characterization and thermal stability of finely divided niobium oxynitrides

1994 ◽  
Vol 119 (2) ◽  
pp. 223-240 ◽  
Author(s):  
Hak Soo Kim ◽  
Chae Ho Shin ◽  
Guy Bugli ◽  
Monique Bureau-Tardy ◽  
Gerald Djega-Mariadassou
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
Thermal Stability Of

scholarly journals The Sintering of Au Nanoparticles on Flat {100}, {111} and Zigzagged {111}-Nanofacetted Structures of Ceria and Its Influence on Catalytic Activity in CO Oxidation and CO PROX

2020 ◽  
Author(s):  
O. S. Bezkrovnyi ◽  
P. Kraszkiewicz ◽  
W. Mista ◽  
L. Kepinski
Keyword(s):  
Electron Microscopy ◽  
Thermal Stability ◽  
Catalytic Activity ◽  
Beneficial Effect ◽  
Co Oxidation ◽  
Au Nanoparticles ◽  
Ceria Support ◽  
Ceria Catalysts ◽  
Thermal Stability Of

Abstract The thermal stability of Au nanoparticles on ceria support of various morphology (nanocubes, nanooctahedra, and {111}-nanofacetted nanocubes) in oxidizing and reducing atmospheres was investigated by electron microscopy. A beneficial effect of the reconstruction of edges of ceria nanocubes into zigzagged {111}-nanofacetted structures on the inhibition of sintering of Au nanoparticles was shown. The influence of different morphology of Au particles on various ceria supports on the reducibility and catalytic activity in CO oxidation, and CO PROX of Au/ceria catalysts was also investigated and discussed. It was shown, that ceria nanocubes with flat {110} terminated edges are more suitable as a support for Au nanoparticles, used to catalyze CO oxidation, than zigzagged {111}- nanofacetted structures. Graphic Abstract

scholarly journals Enhanced catalytic activity and thermal stability of lipase bound to oxide nanosheets

RSC Advances ◽  
2018 ◽  
Vol 8 (36) ◽  
pp. 20347-20352
Author(s):  
Akane Yamada ◽  
Kai Kamada ◽  
Taro Ueda ◽  
Takeo Hyodo ◽  
Yasuhiro Shimizu ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
Thermal Stability Of ◽  
Titanate Nanosheets

The present study reports the preferable effects of binding of lipase to titanate nanosheets. The binding largely enhanced biocatalytic activity and thermal stability of lipase especially at diluted concentrations.

scholarly journals Mechanical and Thermal Stability of Epoxy – TEOS Hybrids Materi-als using Sol-Gel Method

2019 ◽  
Vol 29 (3) ◽  
pp. 145
Author(s):  
Seenaa Ibrahim Hussein ◽  
Nadia Abbas Ali ◽  
Harith Ibrahim Jaafar ◽  
Zaniab Raheem Muslem
Keyword(s):  
Thermal Stability ◽  
Water Absorption ◽  
Sol Gel ◽  
Hardness Test ◽  
Nano Particles ◽  
Bending Test ◽  
Bending Stress ◽  
Gel Method ◽  
Sol Gel Method ◽  
Thermal Stability Of

Sol-gel method is the simplest method and has to preparation of nano particles, nano fibers, and nano flaks. The preparation of hybrid epoxy thermosets enables their improvement in characteristics such as mechanical properties (bending,and hardness), thermal properties. The effect of water absorption on bending and hardness test for tetraethylorthosilicate (TEOS) and epoxy hybrid have been investigated. TEOS with (0%,2%,4%,6%and 8%) volume per-centage mixed with epoxy to prepared sheets of hybrid, these sheets cut as samples for ASTM water absorption, bending and hardness tests. The results show that, adding TEOS to epoxy will increase absorbance of water. bending test shows that there are increase in values of bending stress with increasing TEOS but after im-mersion in water all the values for bending stress will reduce. Hardnessvalues at least for the samples immersion in water from dry samples, occur the diffusion of molecules water in the polymer and hybrids leads to space molecular chains for each other and decrease the hard-ness values. Thermal stability of hybrids increase with increasing TE

scholarly journals Catalytic activity of V2O5 on aniline polymerization and the study of structural properties of poly(aniline)/V2O5 nano composite

e-Polymers ◽  
2010 ◽  
Vol 10 (1) ◽  
Author(s):  
A.Yelil Arasi ◽  
J.Juliet Latha Jeyakumari ◽  
B. Sundaresan ◽  
V. Dhanalakshmi ◽  
R. Anbarasan
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
Oxidative Polymerization ◽  
Experimental Conditions ◽  
Nano Composite ◽  
Novel Approach ◽  
Polymerization Method ◽  
Thermal Stability Of ◽  
Poly Aniline ◽  
Aniline Polymerization

AbstractIt is a novel approach to the synthesize Poly(aniline) / V2O5 nano composite by free radical polymerization method under different experimental conditions such as variation in time, temperature and concentration of aniline and initiator. It was indicated that V2O5 itself could catalyze the oxidative polymerization of aniline. This can be attributed to the internal doping effect, which introduced flexibility to the rigid PANI backbone. TGA counseled the thermal stability of PANI. Through FTIR study, the structure of PANI was established. Comparison of polymerized aniline composite with two different initiators was done.

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