scholarly journals CO2Hydrogenation to Formate with Immobilized Ru‐Catalysts Based on Hybrid Organo‐Silica Mesostructured Materials

ChemCatChem ◽  
2018 ◽  
Vol 11 (1) ◽  
pp. 430-434 ◽  
Author(s):  
Hung‐Kun Lo ◽  
Christophe Copéret
Keyword(s):  
Ru Catalysts ◽  
Mesostructured Materials

Catalytic conversion of glucose into sorbitol over niobium oxide supported Ru catalysts

2021 ◽  
Vol 507 ◽  
pp. 111567
Author(s):  
Jordan Gonzaga Andrade Batista Silva ◽  
Ronaldo Costa Santos ◽  
Enrique Rodríguez-Castellón ◽  
Leonardo Sena Gomes Teixeira ◽  
Luiz Antônio Magalhães Pontes
Keyword(s):  
Niobium Oxide ◽  
Catalytic Conversion ◽  
Ru Catalysts

Unlocking the potential of ruthenium catalysts for nitrogen fixation with subsurface oxygen

2021 ◽  
Author(s):  
Xin Mao ◽  
Zhengxiang Gu ◽  
Cheng Yan ◽  
Aijun Du
Keyword(s):  
Nitrogen Fixation ◽  
High Activity ◽  
Ruthenium Catalysts ◽  
Ru Catalysts ◽  
Subsurface Oxygen

Decorating subsurface oxygen in Ru catalysts to achieve high activity and selectivity for N2 reduction to ammonia.

Improved ammonia synthesis activity of Ce doped barium tantalate supported Ru catalysts

2021 ◽  
Author(s):  
Jia Huang ◽  
Yushi Zhao ◽  
Mingwei Yuan ◽  
Jinjun Li ◽  
Zhixiong You
Keyword(s):  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Ammonia Synthesis ◽  
Ru Catalysts ◽  
Synthesis Activity

Ce doping could increase the specific surface area and reducibility of the barium tantalate carrier, which is beneficial to Ru based ammonia synthesis.

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.

Pt–Ru catalysts supported on carbon xerogels for PEM fuel cells

2012 ◽  
Vol 37 (8) ◽  
pp. 7200-7211 ◽  
Author(s):  
J.C. Calderón ◽  
N. Mahata ◽  
M.F.R. Pereira ◽  
J.L. Figueiredo ◽  
V.R. Fernandes ◽  
...  
Keyword(s):  
Fuel Cells ◽  
Pem Fuel Cells ◽  
Ru Catalysts ◽  
Carbon Xerogels

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.

Structure of Pt/Ru Catalysts Using X-ray Absorption Near Edge Structure Studies

Langmuir ◽  
2001 ◽  
Vol 17 (10) ◽  
pp. 3047-3050 ◽  
Author(s):  
W. E. O'Grady ◽  
P. L. Hagans ◽  
K. I. Pandya ◽  
D. L. Maricle
Keyword(s):  
Edge Structure ◽  
Ru Catalysts ◽  
X Ray ◽  
X Ray Absorption
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