Effect of Pd/C dispersion on its catalytic properties in acetylene and vinylacetylene hydrogenation

Ryndin, Yu. A.; Stenin, M. V.; Boronin, A. I.; Bukhtiyarov, Valerii I.; Zaikovskii, V. I.

doi:10.1016/s0166-9834(00)82370-2

Cited by 72 publications

(27 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…For the catalysts B compared to C, the TOF dropped on 85% when the Pd particle size changed from 3.6 to 2.1 nm. As claimed by several works in the field [24][25][26][27][28][29], the relationship between the Pd particles size and their electronic properties affects the Pd catalytic behaviour. Small particles, being electron deficient [30], adsorb more strongly electron-rich substrates, like alkynes, lowering the turnover frequency.…”

Section: Catalytic Performances Of Pd/cnf/smf Inconelmentioning

confidence: 99%

Palladium on carbon nanofibers grown on metallic filters as novel structured catalyst

Tribolet

Kiwi‐Minsker

2005

Catalysis Today

View full text Add to dashboard Cite

A novel composite material based on carbon nanofibers (CNF) grown on sintered metal fibers (SMF Inconel ) filter was investigated for its favorable properties as catalytic support. The CNF were formed directly over the SMF Inconel by thermal (650 8C) chemical vapor deposition of ethane-hydrogen mixture. The CNF/SMF Inconel composite consists of metal fibers entangled by CNF network of microns thickness and strongly anchored to the metal surface. The properties of the CNF/SMF Inconel were controlled by the synthesis conditions. The CNF coating reduced the filter porosity and decreased the material permeability, but the pressure drop during the gas passage through the reactor remained low for CNF fraction <10%. Palladium was deposited on CNF previously activated by boiling in hydrogen peroxide. The activity and selectivity of Pd8/CNF/SMF Inconel catalysts were tested in the selective hydrogenation of acetylene and compared with Pd supported on activated carbon fibers (Pd8/ACF). The TOF was one order of magnitude higher for Pd8/CNF/SMF Inconel as compared to Pd8/ACF. This effect was attributed to a strong metal-support interaction of Pd8-nanoparticles with the graphitized CNF. The reaction was found to be structure sensitive leading to a decrease of TOF for the Pd8-particles <3 nm. #

show abstract

Section: Catalytic Performances Of Pd/cnf/smf Inconelmentioning

confidence: 99%

Palladium on carbon nanofibers grown on metallic filters as novel structured catalyst

Tribolet

Kiwi‐Minsker

2005

Catalysis Today

View full text Add to dashboard Cite

show abstract

“…However, the surface area values are often largely overestimated due to enhanced adsorption inside micropores of activated carbons (Rouquerol et al 2007). For further information the reader is referred to the abundant literature on the topic (Marsh and Rodríguez-Reinoso 2006;Rouquerol et al 2014).…”

Section: Morphological Analysismentioning

confidence: 99%

“…ACs are largely employed for several technological applications, ranging from filtration, to gas trapping and catalysis (Antolini 2009;Chai et al 2004;Deng et al 2010;Dicks 2006;Kadirvelu et al 2003;Maass et al 2008;Muradov 2001;Park et al 2003;Pernicone et al 1998;Phan et al 2006;Rotunno et al 2006;Rouquerol et al 2014;Sevilla and Mokaya 2014;Sircar et al 1996;Steigerwalt et al 2001;Voropaev et al 2009;Wang et al 2006;Watson et al 2013;Wigmans 1989;Zhang et al 2009;Zhao et al 2008). The reasons at the basis of the large industrial interest upon ACs stand behind the relative low cost of production with respect to the characteristics shown by these materials, such as their low weight and very large values of specific surface area, their thermal and chemical stability, the easiness of tuning their structural and surface properties during production and post-production, and the possibility of changing their macroscopic aspect.…”

Section: Introductionmentioning

confidence: 99%

“…This paper is intended to give an overview of some of the physical-chemical techniques suitable for investigating both structural and surface properties of ACs for applications in catalysis. A deep understanding of the ACs' properties is of primary importance for the complete knowledge of the catalyst's performances as a whole and often is determinant to avoid or postpone the catalysts deactivation (Albers et al 1999;Albers et al 1994;Albers et al 2001;Aramendia et al 1999a;Gampine and Eyman 1998;Groppi et al 1998;Konova et al 2004;Kurtz et al 2003;Lee and Trimm 1995;Mowery and McCormick 2001;Narui et al 1999;Ordonez et al 2001;Pellegrini et al 2011;Pernicone et al 1998;Prieto et al 2013;Ryndin et al 1989;Schanke et al 1995;Swaan et al 1994;Vizcaino et al 2007;Zhang et al 1996). The selected techniques are surely not exhaustive of all the possible experimental methods that can be applied to ACs, but they have been chosen on the basis of the personal experience of the author.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Activated carbons for applications in catalysis: the point of view of a physical-chemist

Lazzarini

2017

Rend. Fis. Acc. Lincei

View full text Add to dashboard Cite

This paper is a concise review on the principal physical-chemical techniques available to investigate the structural and surface properties of activated carbons (ACs) for catalytic applications. The same activated carbon has been characterized by an incredible amount of techniques: Solid State-Nuclear Magnetic Resonance, X-Ray Powder Diffraction and Raman spectroscopy for structural characterization, X-ray Photoelectron Spectroscopy, Inelastic Neutron Scattering and FT-IR spectroscopy for surface analysis, instead. The main goal is to discuss the advantages and disadvantages of all the techniques and to propose a multi-technique approach that should help in avoiding misinterpretations, as often found in the specialized literature.

show abstract

“…Supporting Pd catalysts have been studied in selective hydrogenation of alkyne in both gas and liquid phases [4][5][6][7][8]. In particular, Pd supported on alumina (Pd/Al 2 O 3 ) is utilized as a catalyst in several commercial hydrogenation processes [9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Selective Hydrogenation of Concentrated Vinyl Acetylene Mixed C4 by Modified Pd Catalysts: Effect of Cu

Insorn

Kitiyanan

2016

Catalysts

View full text Add to dashboard Cite

Abstract:The Pd and Pd-Cu on alumina catalysts were tested for hydrogenation of vinyl acetylene in mixed C4 in a circulating tubular reactor. The results showed that adding proper amounts of Cu improved the reaction activity, but inhibited 1,3-butadiene selectivity. Moreover, the presence of Cu retarded the carbon deposition on catalysts during the reaction. Temperature programmed oxidation (TPO), Temperature programmed reduction (TPR), H 2 chemisorption, and X-ray photoelectron spectroscopy (XPS) were utilized to characterize the catalysts. The characterization suggested both geometric and electronic modifications.

show abstract

Effect of Pd/C dispersion on its catalytic properties in acetylene and vinylacetylene hydrogenation

Cited by 72 publications

References 13 publications

Palladium on carbon nanofibers grown on metallic filters as novel structured catalyst

Palladium on carbon nanofibers grown on metallic filters as novel structured catalyst

Activated carbons for applications in catalysis: the point of view of a physical-chemist

Selective Hydrogenation of Concentrated Vinyl Acetylene Mixed C4 by Modified Pd Catalysts: Effect of Cu

Contact Info

Product

Resources

About