Isolable CO2 Adducts of Polarized Alkenes: High Thermal Stability and Catalytic Activity for CO2 Chemical Transformation

2018 ◽  
Vol 361 (2) ◽  
pp. 326-334 ◽  
Author(s):  
Hui Zhou ◽  
Rui Zhang ◽  
Xiao-Bing Lu
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
Chemical Transformation ◽  
High Thermal Stability

Enhanced catalytic activity with high thermal stability based on multiple Au cores in the interior of mesoporous Si–Al shells

RSC Advances ◽  
2015 ◽  
Vol 5 (60) ◽  
pp. 48187-48193 ◽  
Author(s):  
Yiwei Zhang ◽  
Sanming Xiang ◽  
Yuming Zhou ◽  
Yuanmei Xu ◽  
Zewu Zhang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
High Activity ◽  
High Thermal Stability

Mesoporous Si–Al/Au nanocatalysts were synthesized by combining the advantage of good permeability from mesoporous Si–Al shells and the high activity upon multiple Au cores.

Low-migratory ionic ferrocene-based burning rate catalysts with high combustion catalytic efficiency

2015 ◽  
Vol 39 (1) ◽  
pp. 155-162 ◽  
Author(s):  
Xuelin Liu ◽  
Weiqiang Zhang ◽  
Guofang Zhang ◽  
Ziwei Gao
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
Thermal Degradation ◽  
Burning Rate ◽  
Ammonium Perchlorate ◽  
Catalytic Efficiency ◽  
High Thermal Stability ◽  
Ionic Compounds

1-(Ferrocenylmethyl)alkylimidazolium-based ionic compounds with low-migration, high thermal stability and catalytic activity in the thermal degradation of ammonium perchlorate were synthesized and characterized.

Nanoporous high-entropy alloys for highly stable and efficient catalysts

2019 ◽  
Vol 7 (11) ◽  
pp. 6499-6506 ◽  
Author(s):  
Hua-Jun Qiu ◽  
Gang Fang ◽  
Yuren Wen ◽  
Pan Liu ◽  
Guoqiang Xie ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
High Thermal Stability ◽  
High Entropy Alloys ◽  
High Entropy

A general dealloying strategy is developed to prepare multi-component alloys with high thermal stability, electrochemical durability, and catalytic activity.

scholarly journals Flowerlike hybrid horseradish peroxidase nanobiocatalyst for the polymerization of guaiacol

2020 ◽  
Vol 44 (5) ◽  
pp. 1285-1292
Author(s):  
Ersen GÖKTÜRK
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
Horseradish Peroxidase ◽  
High Thermal Stability ◽  
Polymerization Reaction ◽  
Molecular Weights ◽  
Repeated Use ◽  
High Yields ◽  
Phosphate Buffered Saline ◽  
Very High

In this study, the catalytic activity and stability of flowerlike hybrid horseradish peroxidase (HRP) nanobiocatalyst (HRPCu2+) obtained from Cu2+ ions and HRP enzyme in the polymerization reaction of guaiacol were analyzed. We demonstrated that HRP-Cu2+ and hydrogen peroxide (H2O2) initiator showed significantly increased catalytic activity and stability on the polymerization of guaiacol compared to that of free HRP enzyme. Poly(guaiacol) was observed with quite high yields (88%) and molecular weights (38,000 g/mol) under pH 7.4 phosphate-buffered saline (PBS) conditions at 60 °C with 5 weight% of HRP-Cu2+ loading. HRP-Cu2+ also shows very high thermal stability and works even at 70 °C reaction temperature; free HRP enzyme denatures at that temperature. Furthermore, HRP-Cu2+ provided considerable repeated use and showed some degree of catalytic activity, even after the fourth recycle, in the polymerization of guaiacol.

SiO2 (core)-TiO2 (shell) Structure as Catalyst Support for Oxidation of CO at Low Temperatures

2007 ◽  
Vol 334-335 ◽  
pp. 1025-1028
Author(s):  
Zi Yi Zong ◽  
Xi Jiang Yin ◽  
Li Fang Lew ◽  
Soo Yee Tan
Keyword(s):  
Thermal Stability ◽  
Catalytic Activity ◽  
Shell Structure ◽  
Low Temperatures ◽  
Au Nanoparticles ◽  
Catalyst Support ◽  
High Thermal Stability ◽  
Core Shell ◽  
Oxidation Of Co ◽  
Core Shell Structure

In this study, TiO2 was successfully coated on Stober silica beads followed by depositing Au nanoparticles on this core-shell structure. The size of the Au nanoparticles was well controlled in the range of 2 – 7 nm. This composite exhibited high thermal stability. When used as a model catalyst for oxidation of CO at low temperatures, the Au/TiO2/SiO2 showed a much higher catalytic activity than the Au/SiO2 and Au/TiO2(P25) catalysts.

Wide-bandgap bipolar material with high thermal stability

2019 ◽  
pp. 903
Author(s):  
Sheng-Chieh Lin ◽  
Yu-Chieh Cheng ◽  
Man-Kit Leung ◽  
Jiun-Haw Lee ◽  
Tien-Lung Chiu
Keyword(s):  
Thermal Stability ◽  
Wide Bandgap ◽  
High Thermal Stability

New Deep Blue Emitting Materials Based on Indenopyrazine Core with High Thermal Stability

2011 ◽  
Vol 11 (5) ◽  
pp. 4639-4643 ◽  
Author(s):  
Chang-Hun Seok ◽  
Young-Il Park ◽  
Soo-Kang Kim ◽  
Ji-Hoon Lee ◽  
Jongwook Park
Keyword(s):  
Thermal Stability ◽  
High Thermal Stability ◽  
Deep Blue

scholarly journals Improved thermally stable oligoetherols from 6-aminouracil, ethylene carbonate and boric acid

2019 ◽  
Vol 17 (1) ◽  
pp. 1080-1086
Author(s):  
Elżbieta Chmiel-Szukiewicz
Keyword(s):  
Thermal Stability ◽  
Thermal Properties ◽  
Boric Acid ◽  
Ethylene Carbonate ◽  
Pyrimidine Ring ◽  
Polyurethane Foams ◽  
High Thermal Stability ◽  
H Nmr ◽  
Maldi Tof ◽  
Instrumental Methods

AbstractSyntheses of oligoetherols with a 1,3-pyrimidine ring and boron atoms using 6-aminouracil, ethylene carbonate and boric acid has been proposed. The structure of the obtained products were determined by instrumental methods (IR, 1H-NMR and MALDI-ToF spectra). The physicochemical and thermal properties of oligoetherols were examined. The products were characterized by high thermal stability. Based on the tests performed, it was found that oligoetherols obtained from 6-aminouracil, boric acid and ethylene carbonate are suitable for the manufacturing of polyurethane foams with improved thermal stability and reduced flammability.

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