Particle size effects for carbon nanofiber supported platinum and ruthenium catalysts for the selective hydrogenation of cinnamaldehyde

Plomp, Arie J.; Vuori, H.; Krause, A.O.I.; Jong, Krijn P. de; Bitter, Johannes H.

doi:10.1016/j.apcata.2008.08.018

Cited by 164 publications

(131 citation statements)

References 26 publications

Supporting

Mentioning

111

Contrasting

Unclassified

Order By: Relevance

“…Platinum on nanostructured carbons catalysts (1 g; sieve fraction 25-90 lm) were tested for the cinnamaldehyde hydrogenation as described earlier [13]. The conversion of cinnamaldehyde and selectivity to cinnamyl alcohol were calculated as described before [13].…”

Section: Methodsmentioning

confidence: 99%

See 2 more Smart Citations

Reducibility of Platinum Supported on Nanostructured Carbons

et al. 2009

Self Cite

View full text Add to dashboard Cite

The nanostructure of graphite like carbon, i.e. carbon nanofibers (CNF), carbon nanotubes (CNT) and carbon nanoplatelets (CNP), displayed a significant influence on the reducibility of platinum deposited on these carbons. The onset temperature for reduction increased from 461 K for Pt/CNF to 466 K for Pt/CNP and 487 K for Pt/CNT. The retarded reduction for Pt/CNT was related to the higher amount of acidic oxygen surface groups on this support resulting in a strong stabilization of the cationic platinum species. A higher reduction temperature for that sample increased the amount of metallic platinum, however the platinum particle size was larger (2-11 nm) compared to that of Pt/CNF and Pt/CNP (both 1-3 nm). The orientation of the graphene sheets had a significant influence on the selectivity for cinnamaldehyde hydrogenation: Pt/CNP resulted in a higher selectivity towards cinnamyl alcohol compared to Pt/CNF.

show abstract

Section: Methodsmentioning

confidence: 99%

“…in 1 L demineralized water according to an earlier described procedure [12]. The growth and oxidation of CNF was performed as described earlier [13].…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Reducibility of Platinum Supported on Nanostructured Carbons

et al. 2009

Self Cite

View full text Add to dashboard Cite

show abstract

“…For a single exposure of the precursor, larger islands were observed in SiO 2 (3.1 nm) as compared to the Al 2 O 3 support (1.2 nm) in consistency with the available number of active OH groups (proportional to the available surface area and surface density). Additionally, an acetylacetonate Pt precursor (Pt (acac) 2 ) was utilized at lower deposition temperatures of 180-200°C, which had as a drawback the inclusion of carbon-based impurities of a high concentration (~3.5 wt.%) in the catalyst (Plomp et al, 2008;Vuori et al, 2006).…”

Section: Example: Deposition Of Platinum Nanoclusters By Aldmentioning

confidence: 99%

Scalable Production of Nanostructured Particles using Atomic Layer Deposition

Goulas

Ommen

2014

KONA

View full text Add to dashboard Cite

Core-shell nanoparticles and other nanostructured particles have high potential in applications such as heterogeneous catalysis and energy conversion and storage. However, a hurdle in their utilization is that typically, large amounts of such nanostructured materials are required. Gas-phase coating using atomic layer deposition (ALD, a variant of chemical vapour deposition) can be used to provide the surface of a particle with either an ultrathin continuous coating or a decoration of nanoclusters. When carried out in a fluidized bed, ALD is an attractive way of producing nanostructured particles with excellent scale-up potential. We demonstrate the fabrication of catalysts by deposition of the active phase (Pt) on fluidized nanoparticles (TiO 2 P25) at atmospheric pressure. We show that ALD is a technique that 1) guarantees efficient use of the precursor; 2) allows precise control of the size and loading; 3) can be used for low and medium loading of catalysts by adjusting the number of repeated cycles; 4) leads to high-quality (low impurities level) end-products.

show abstract

“…6,7 Supported noble metal (Pt, Pd, & Ir) catalysts have been studied extensively for this reaction. Selectivity towards COL is significantly influenced by several factors such as metal particle size, [8][9][10][11] nature of support, 12 promoters 13 and solvents. 14 A number of supports like titania, zirconia, silica, and alumina have been explored for the selective hydrogenation of CAL.…”

Section: Introductionmentioning

confidence: 99%

Nickel Based Catalysts for Selective Hydrogenation of Cinnamaldehyde- Influence of Support Phases

Prakash¹,

Mahalakshmy²,

Krishnamurthy³

et al. 2017

ECB

View full text Add to dashboard Cite

of supports; polymorphs of titania; nickel at interface Ni (15% w/w) supported on alumina, silica, and titania (P-25, anatase and rutile phases) have been investigated for the liquid phase hydrogenation of cinnamaldehyde. XRD, TPR and XPS data (binding energy shifts for Ni2p) indicate metal-support interactions in all supported catalysts. Weaker binding of H2 on Ni/TiO2 (H2-TPD) improves activity. Ni/TiO2 phases display higher cinnamaldehyde conversion and selectivity to cinnamyl alcohol compared to the catalysts supported on alumina and silica. Amongst the three polymorphs of titania, the maximum activity, and selectivity displayed by Ni/ TiO2-P-25, is attributed to the active Ni crystallites located at the interface between anatase and rutile phases in titania P-25 matrix (HRTEM). Though Ni crystallites on alumina and silica are relatively smaller (compared to those on the three TiO2 phases) in size, their activity vis-à-vis for those supported on titania phases is less, implying that factors other than crystallite size influence the performance.

show abstract

Particle size effects for carbon nanofiber supported platinum and ruthenium catalysts for the selective hydrogenation of cinnamaldehyde

Cited by 164 publications

References 26 publications

Reducibility of Platinum Supported on Nanostructured Carbons

Reducibility of Platinum Supported on Nanostructured Carbons

Scalable Production of Nanostructured Particles using Atomic Layer Deposition

Nickel Based Catalysts for Selective Hydrogenation of Cinnamaldehyde- Influence of Support Phases

Contact Info

Product

Resources

About