Promotional effect of Fe on the performance of supported Cu catalyst for ambient pressure hydrogenation of furfural

RSC Advances ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3888-3898 ◽  
Author(s):  
Marimuthu Manikandan ◽  
Ashok Kumar Venugopal ◽  
Atul S. Nagpure ◽  
Satyanarayana Chilukuri ◽  
Thirumalaiswamy Raja
Keyword(s):  
Selective Hydrogenation ◽  
Furfuryl Alcohol ◽  
Bimetallic Catalyst ◽  
Ambient Pressure ◽  
Catalyst System ◽  
Vapour Phase ◽  
Impregnation Method ◽  
Metal Free ◽  
Promotional Effect ◽  
Cu Catalyst

A noble-metal free FeCu based bimetallic catalyst system prepared by facile co-impregnation method was found to be a highly admirable for vapour phase selective hydrogenation of furfural to furfuryl alcohol at ambient pressure.

scholarly journals Back Cover: Microwave-Assisted Selective Hydrogenation of Furfural to Furfuryl Alcohol Employing a Green and Noble Metal-Free Copper Catalyst (ChemSusChem 24/2016)

ChemSusChem ◽  
2016 ◽  
Vol 9 (24) ◽  
pp. 3528-3528 ◽  
Author(s):  
Pedro N. Romano ◽  
João M. A. R. de Almeida ◽  
Yuri Carvalho ◽  
Peter Priecel ◽  
Eduardo Falabella Sousa-Aguiar ◽  
...  
Keyword(s):  
Noble Metal ◽  
Selective Hydrogenation ◽  
Furfuryl Alcohol ◽  
Copper Catalyst ◽  
Metal Free ◽  
Back Cover ◽  
Microwave Assisted

Diboration of 3-substituted propargylic alcohols using a bimetallic catalyst system: access to (Z)-allyl, vinyldiboronates

2020 ◽  
Vol 56 (71) ◽  
pp. 10313-10316
Author(s):  
Cheryl L. Peck ◽  
Jan Nekvinda ◽  
Webster L. Santos
Keyword(s):  
Bimetallic Catalyst ◽  
Catalyst System ◽  
Propargylic Alcohols ◽  
Cu Catalyst ◽  
System Access

A Pd/Cu catalyst system facilitates the diboration of unactivated propargylic alcohols with pentafluoroboronic acid and diboron to generate (Z)-allyl, vinyldiboronates.

scholarly journals Microwave-Assisted Selective Hydrogenation of Furfural to Furfuryl Alcohol Employing a Green and Noble Metal-Free Copper Catalyst

ChemSusChem ◽  
2016 ◽  
Vol 9 (24) ◽  
pp. 3387-3392 ◽  
Author(s):  
Pedro N. Romano ◽  
João M. A. R. de Almeida ◽  
Yuri Carvalho ◽  
Peter Priecel ◽  
Eduardo Falabella Sousa-Aguiar ◽  
...  
Keyword(s):  
Noble Metal ◽  
Selective Hydrogenation ◽  
Furfuryl Alcohol ◽  
Copper Catalyst ◽  
Metal Free ◽  
Microwave Assisted

Novel C@Ni3P Nanoparticles for Highly Selective Hydrogenation of Furfural to Furfuryl Alcohol

2021 ◽  
Author(s):  
Ye Tian ◽  
Yazhou Wang ◽  
Huiyu Zhang ◽  
Linfei Xiao ◽  
Wei Wu
Keyword(s):  
Selective Hydrogenation ◽  
Furfuryl Alcohol

Highly Efficient Ir–CoOx Hybrid Nanostructures for the Selective Hydrogenation of Furfural to Furfuryl Alcohol

Langmuir ◽  
2021 ◽  
Vol 37 (5) ◽  
pp. 1894-1901
Author(s):  
Hongbo Yu ◽  
Jihao Zhao ◽  
Chunzheng Wu ◽  
Bo Yan ◽  
Shuangliang Zhao ◽  
...  
Keyword(s):  
Selective Hydrogenation ◽  
Furfuryl Alcohol ◽  
Hybrid Nanostructures ◽  
Highly Efficient

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.

Efficient Oxidative Desulfurization (ODS) of Commercial Diesel with TBHP under Mild Conditions Catalyzed by Polymolybdates Supported on Al2O3

2015 ◽  
Vol 1107 ◽  
pp. 341-346
Author(s):  
Wan Nazwanie Wan Abdullah ◽  
Rusmidah Ali ◽  
Wan Azelee Wan Abu Bakar
Keyword(s):  
Sulfur Content ◽  
Research Work ◽  
Sulfur Removal ◽  
Oxidative Desulfurization ◽  
Catalyst System ◽  
Impregnation Method ◽  
Butyl Hydroperoxide ◽  
Tert Butyl ◽  
Alternative Method ◽  
Tert Butyl Hydroperoxide

Due to the low specifications for sulfur content in diesel, a lot of research work are been conducted to develop alternative method for desulfurization. Catalytic oxidative desulfurization (Cat-ODS) has been found to be an alternative method to replace a conventional method which is hydrodesulfurization.New catalyst formulation using tert-butyl hydroperoxide polymolybdate based catalyst system was investigated in this research utilizing tert-butyl hydroperoxide (TBHP) as oxidant and dimethylformamide (DMF) as solvent for extraction. A series of polymolybdate supported alumina catalysts were prepared using wet impregnation method, ageing at ambient room temperature for 24 hours and followed by calcination process. A commercial diesel with 440 ppmw of total sulfur was employed to evaluate the elimination of sulfur compounds. Besides, the percentage of sulfur removal was measured by gas chromatography-flame photometric detector (GC-FPD). The sulfur content in commercial diesel was successfully reduced from 440 ppmw to 35 ppmw under mild condition followed by solvent extraction. From catalytic testing, Mo-Al2O3 calcined at 500°C was revealed as the most potential catalyst which gave 92% of sulfur removal.

ChemInform Abstract: A Highly Efficient Cu-Catalyst System for N-Arylation of Azoles in Water.

ChemInform ◽  
2012 ◽  
Vol 43 (40) ◽  
pp. no-no
Author(s):  
Deping Wang ◽  
Fuxing Zhang ◽  
Daizhi Kuang ◽  
Jiangxi Yu ◽  
Junhua Li
Keyword(s):  
Catalyst System ◽  
Highly Efficient ◽  
Cu Catalyst

scholarly journals Fuel spray vapour distribution correlations for a high pressure diesel fuel spray cases for different injector nozzle geometries.

2017 ◽  
Author(s):  
Darlington Njere ◽  
Nwabueze Emekwuru
Keyword(s):  
High Pressure ◽  
Liquid Phase ◽  
Diesel Fuel ◽  
Ambient Pressure ◽  
Vapour Phase ◽  
Fuel Spray ◽  
Combustion Chambers ◽  
Complete Combustion ◽  
Fuel Injectors ◽  
Fuel Vapour

The evolution of diesel fuel injection technology, to facilitate strong correlations of in-cylinder spray propagation with injection conditions and injector geometry, is crucial in facing emission challenges. More observations of spray propagation are, therefore, required to provide valuable information on how to ensure that all the injected fuel has maximum contact with the available air, to promote complete combustion and reduce emissions. In this study, high pressure diesel fuel sprays are injected into a constant-volume chamber at injection and ambient pressure values typical of current diesel engines. For these types of sprays the maximum fuel liquid phase penetration is different and reached sooner than the maximum fuel vapour phase penetration. Thus, the vapour fuel could reach the combustion chamber wall and could be convected and deflected by swirling air. In hot combustion chambers this impingement can be acceptable but this might be less so in larger combustion chambers with cold walls. The fuel-ambient mixture in vapourized fuel spray jets is essential to the efficient performance of these engines. For this work, the fuel vapour penetration values are presented for fuel injectors of different k-factors. The results indicate that the geometry of fuel injectors based on the k-factors appear to affect the vapour phase penetration more than the liquid phase penetration. This is a consequence of the effects of the injector types on the exit velocity of the fuel droplets.DOI: http://dx.doi.org/10.4995/ILASS2017.2017.4951

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