Preparation of Optically Enriched 3-Hydroxy-3,4-dihydroquinolin-2(1H)-ones by Heterogeneous Catalytic Cascade Reaction over Supported Platinum Catalyst

2013 ◽  
Vol 355 (8) ◽  
pp. 1623-1629 ◽  
Author(s):  
György Szőllősi ◽  
Zsolt Makra ◽  
Lenke Kovács ◽  
Ferenc Fülöp ◽  
Mihály Bartók
Keyword(s):  
Platinum Catalyst ◽  
Cascade Reaction ◽  
Heterogeneous Catalytic ◽  
Supported Platinum ◽  
Supported Platinum Catalyst

scholarly journals Facile Route for Bio-Phenol Siloxane Synthesis via Heterogeneous Catalytic Method and its Autonomic Antibacterial Property

Polymers ◽  
2018 ◽  
Vol 10 (10) ◽  
pp. 1151 ◽  
Author(s):  
Xiaoyan Pang ◽  
Xin Ge ◽  
Jianye Ji ◽  
Weijie Liang ◽  
Xunjun Chen ◽  
...  
Keyword(s):  
Escherichia Coli ◽  
Platinum Catalyst ◽  
Antibacterial Property ◽  
Catalytic Method ◽  
Heterogeneous Catalytic ◽  
Supported Platinum ◽  
Infrared Spectrometer ◽  
Ft Ir ◽  
Supported Platinum Catalyst ◽  
Reactant Conversion

Eugenol, used as bio-phenol, was designed to replace the hydrogen atom of hydrogenterminated siloxane by hydrosilylation reaction under the presence of alumina-supported platinum catalyst (Pt-Al2O3), silica-supported platinum catalyst (Pt-SiO2) and carbon nanotube-supported platinum catalyst (Pt-CNT), respectively. The catalytic activities of these three platinum catalysts were measured by nuclear magnetic resonance hydrogen spectrometer (1H NMR). The properties of bio-phenol siloxane were characterized by Fourier transform infrared spectrometer (FT–IR), UV-visible spectrophotometer (UV) and thermogravimeter (TGA), and its antibacterial property against Escherichia coli was also studied. The results showed that the catalytic activity of the catalyst Pt-CNT was preferable. When the catalyst concentration was 100 ppm, the reaction temperature was 80 °C and reaction time was 6 h, the reactant conversion rate reached 97%. After modification with bio-phenol, the thermal stability of the obtained bio-phenol siloxane was improved. For bio-phenol siloxane, when the ratio of weight loss reached 98%, the pyrolysis temperature was raised to 663 °C which was 60 °C higher than hydrogenterminated siloxane. Meanwhile, its autonomic antibacterial property against Escherichia coli was improved significantly.

Super-microporous silica-supported platinum catalyst for highly regioselective hydrosilylation

2017 ◽  
Vol 97 ◽  
pp. 51-55 ◽  
Author(s):  
Wenbin Hu ◽  
Huilin Xie ◽  
Hangbo Yue ◽  
Pepijn Prinsen ◽  
Rafael Luque
Keyword(s):  
Platinum Catalyst ◽  
Microporous Silica ◽  
Supported Platinum ◽  
Supported Platinum Catalyst

scholarly journals Graphene-enhanced platinum-catalysed hydrosilylation of amides and chalcones: a sustainable strategy allocated with in situ heterogenization and multitask application of H2PtCl6

RSC Advances ◽  
2017 ◽  
Vol 7 (80) ◽  
pp. 50729-50738 ◽  
Author(s):  
Ning Li ◽  
Xiao-Yun Dong ◽  
Jing-Lei Zhang ◽  
Ke-Fang Yang ◽  
Zhan-Jiang Zheng ◽  
...  
Keyword(s):  
Platinum Catalyst ◽  
Comprehensive Utilization ◽  
Supported Platinum ◽  
Supported Platinum Catalyst

This work developed a new sustainable strategy with comprehensive utilization of recovered catalyst, which the organosilicon/graphene-supported platinum catalyst prepared from reduction of amides could be further used in the 1,4-hydrosilylation of chalcones.

Dynamic Structure Changes of a Heterogeneous Catalyst within a Reactor: Oscillations in CO Oxidation over a Supported Platinum Catalyst

ChemCatChem ◽  
2010 ◽  
Vol 2 (6) ◽  
pp. 653-657 ◽  
Author(s):  
Jagdeep Singh ◽  
Maarten Nachtegaal ◽  
Evalyn M. C. Alayon ◽  
Jan Stötzel ◽  
Jeroen A. van Bokhoven
Keyword(s):  
Co Oxidation ◽  
Heterogeneous Catalyst ◽  
Platinum Catalyst ◽  
Dynamic Structure ◽  
Supported Platinum ◽  
Structure Changes ◽  
Supported Platinum Catalyst
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