Carbon Nanotubes Supported Mono- and Bimetallic Pt and Ru Catalysts for Selective Hydrogenation of Phenylacetylene

2012 ◽  
Vol 51 (13) ◽  
pp. 4934-4941 ◽  
Author(s):  
Chuang Li ◽  
Zhengfeng Shao ◽  
Min Pang ◽  
Christopher T. Williams ◽  
Xiongfu Zhang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Selective Hydrogenation ◽  
Ru Catalysts

Carbon Nanotunes Supported Pt and Pt-Ru Catalysts for Selective Hydrogenation of Citral: Effect of Promoters and Thermal Activation of Catalysts

2012 ◽  
Vol 584 ◽  
pp. 229-233 ◽  
Author(s):  
Sakunthala Angamuthu Ananthan ◽  
Narayanan Vengidusamy ◽  
Krishnamoorthy Giribabu ◽  
Ranganathan Suresh
Keyword(s):  
Selective Hydrogenation ◽  
Bimetallic Catalyst ◽  
Surface Group ◽  
Inert Atmosphere ◽  
Area Measurement ◽  
Bet Surface Area ◽  
Metallic State ◽  
Environment Friendly ◽  
Ru Catalysts ◽  
Different Temperatures

MWCNT supported Pt, Ru, and Pt–Ru catalysts were prepared and reduced at two different temperatures, 375°C (LTR) and 675°C (HTR) for the selective hydrogenation of citral to the corresponding unsaturated alcohols (geraniol and nerol). The catalysts were characterized by BET Surface area measurement, TPD, SEM, EDAX, TEM, XRD and XPS. It was found that the XRD of Pt and Ru shows fcc and hcp crystalline structure respectively, which is uniformly dispersed with an average particles size of 3.5 nm and zero valence metallic state. The removal of acidic oxygen surface group is observed when heat- treatments in a inert atmosphere at 675°C were performed. The bimetallic catalyst of Pt-Ru/MWCNT (HTR) was found to afford remarkably high conversion levels (85%) and high selectivity (95%) provided that a thermal pretreatment was performed on the catalyst. These results can be rationalized in terms of electron transfer from the support to the metal. The catalysts are environment friendly and can be recycled for more than eight times.

Non-mercury catalytic acetylene hydrochlorination over Ru catalysts enhanced by carbon nanotubes

RSC Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 9002-9008 ◽  
Author(s):  
Guangbi Li ◽  
Wei Li ◽  
Haiyang Zhang ◽  
Yanfeng Pu ◽  
Mengxia Sun ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Catalytic Activity ◽  
Acetylene Hydrochlorination ◽  
Ru Catalysts ◽  
Inner Diameter

Ru catalysts deposited inside the channels of the CNTs show higher catalytic activity. Ru-in-CNT catalyst exhibited an acetylene conversion of 95.0% at 170 °C and 10 h. CNTs with an inner diameter of 3–7 nm can functionalize as an efficient support.

Fuel cell testing of Pt–Ru catalysts supported on differently prepared and pretreated carbon nanotubes

2013 ◽  
Vol 98 ◽  
pp. 94-103 ◽  
Author(s):  
Wojciech Tokarz ◽  
Grzegorz Lota ◽  
Elzbieta Frackowiak ◽  
Andrzej Czerwiński ◽  
Piotr Piela
Keyword(s):  
Carbon Nanotubes ◽  
Fuel Cell ◽  
Ru Catalysts ◽  
Cell Testing

Controlling Cross Section of Carbon Nanotubes via Selective Hydrogenation

2010 ◽  
Vol 114 (27) ◽  
pp. 11753-11757 ◽  
Author(s):  
Guangfen Wu ◽  
Jinlan Wang ◽  
Xiao Cheng Zeng ◽  
Hong Hu ◽  
Feng Ding
Keyword(s):  
Carbon Nanotubes ◽  
Cross Section ◽  
Selective Hydrogenation

Novel microwave synthesis of ruthenium nanoparticles supported on carbon nanotubes active in the selective hydrogenation of p-chloronitrobenzene to p-chloroaniline

2012 ◽  
Vol 421-422 ◽  
pp. 99-107 ◽  
Author(s):  
Claudia Antonetti ◽  
Mustapha Oubenali ◽  
Anna Maria Raspolli Galletti ◽  
Philippe Serp ◽  
Giuditta Vannucci
Keyword(s):  
Carbon Nanotubes ◽  
Selective Hydrogenation ◽  
Microwave Synthesis ◽  
Ruthenium Nanoparticles

scholarly journals Silver nanoparticles confined in carbon nanotubes: on the understanding of the confinement effect and promotional catalysis for the selective hydrogenation of dimethyl oxalate

Nanoscale ◽  
2016 ◽  
Vol 8 (11) ◽  
pp. 5959-5967 ◽  
Author(s):  
Jianwei Zheng ◽  
Xinping Duan ◽  
Haiqiang Lin ◽  
Zhengqiang Gu ◽  
Huihuang Fang ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Silver Nanoparticles ◽  
Selective Hydrogenation ◽  
Ag Nanoparticles ◽  
Catalytic Performance ◽  
Confinement Effect ◽  
Dimethyl Oxalate

Carbon nanotubes induce confinement of Ag nanoparticles which show superior catalytic performance for hydrogenation of dimethyl oxalate.

Nanosizing Intermetallic Compounds Onto Carbon Nanotubes: Active and Selective Hydrogenation Catalysts

2011 ◽  
Vol 50 (43) ◽  
pp. 10231-10235 ◽  
Author(s):  
Lidong Shao ◽  
Wei Zhang ◽  
Marc Armbrüster ◽  
Detre Teschner ◽  
Frank Girgsdies ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Intermetallic Compounds ◽  
Selective Hydrogenation ◽  
Hydrogenation Catalysts
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