Catalytic activity of nanoscale borides: Co2B and Ni7B3 in the liquid-phase hydrogenation of citral

Kalyon, Nalan; Hofmann, Kathrin; Malter, Jutta; Lucas, Martin; Claus, Peter; Albert, Barbara

doi:10.1016/j.jcat.2017.06.009

Cited by 24 publications

(14 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[1] While it is wellknown that boridesa re interesting refractory materials for high-temperature uses, [2][3][4] their activity as catalysts is far less explored. Earlier,w eshowed nanoscale Co 2 Ba nd Ni 7 B 3 to be very interesting catalysts for the selective hydrogenation of natural products like citral, [5] and-in an independents tudyidentified CoOOH as ah ighly active speciesf or the oxygenevolution reaction( OER), [6] (compare also Refs. [7,8]).…”

Section: Introductionmentioning

confidence: 98%

Synthesis of a Highly Efficient Oxygen‐Evolution Electrocatalyst by Incorporation of Iron into Nanoscale Cobalt Borides

et al. 2018

View full text Add to dashboard Cite

High-performance catalysts for the oxygen-evolution reaction in water electrolysis are usually based on expensive and rare elements. Herein, mixed-metal borides are shown to be competitive with established electrocatalysts like noble metal oxides and other transition-metal(oxide)-based catalysts. Iron incorporation into nanoscale dicobalt boride results in excellent activity and stability in alkaline solutions. (Co Fe ) B shows an overpotential of η=0.33 V (1.56 V vs. RHE) at 10 mA cm in 1 m KOH with a very low onset potential of ≈1.5 V vs. RHE, comparable to the performance of IrO and RuO . XPS shows that the original catalyst is modified under the reaction conditions and indicates that CoOOH and Co(OH) are formed as active surface species, whereas the Fe remains in the catalyst, contributing to an improved catalyst performance. The nanoscale borides are obtained by a one-step solution synthesis, calcined, and characterized by XRD, energy-dispersive X-ray spectroscopy, and SEM. Single crystals of (Co Fe ) B grown under chemical transport conditions were used for an unambiguous specification of the nanostructured particles by relating the cobalt/iron ratio to the lattice parameters.

show abstract

Section: Introductionmentioning

confidence: 98%

Synthesis of a Highly Efficient Oxygen‐Evolution Electrocatalyst by Incorporation of Iron into Nanoscale Cobalt Borides

et al. 2018

View full text Add to dashboard Cite

show abstract

“…Noble metal Ag, 139 Pd, 123 Ru, 140,141 and Pt 142,143 and transition metal Co 144 and Ni 145‐147 were used to promote catalytic activity for the synthesis of perfumery chemicals via chemoselective hydrogenation reaction (Table 4). Metal nanoparticles were deposited on metal oxide via selective adsorption, impregnation or deposition–precipitation methods 111,148,149 .…”

Section: Supported Metal Nanoparticles Catalystsmentioning

confidence: 99%

Review on heterogeneous catalysts for the synthesis of perfumery chemicals via isomerization, acetalization and hydrogenation

Hartati

Firda

Bahruji

et al. 2021

Flavour & Fragrance J

View full text Add to dashboard Cite

Synthetic fragrance has dominated the perfumery industry in recent decades due to the ability to produce perfumery ingredients on a large scale at a low cost. Extensive research in the field of synthetic perfumery chemical involved the utilization of catalysts to improve the productivity. This review will discuss recent advances of heterogeneous catalysts for the synthesis of perfumery chemicals as fragrance ingredients. Transition from homogeneous to heterogeneous catalysts will be included in order to provide insight into the benefits of heterogeneous catalysts to overcome the limitation of homogeneous reaction. Isomerization, acetalization and hydrogenation were identified as three main reactions for the synthesis of perfumery chemicals based on the number of reported work since 2000. This review will focus on α‐pinene and α‐pinene oxide as the main molecular substrates, however, different molecules, for example, linalool, citronellal and cinnamaldehyde will also be included. The synthesis, modification and possible mechanisms for the reactions involving zeolite, aluminosilicate, metal oxides, metal organic framework, monometallic and bimetallic nanoparticles as heterogeneous catalysts will be discussed. Discussion on isomerization and acetalization reactions will focus on the acidity and the porosity of the catalysts as the two main factors that determine the conversion and selectivity. For perfumery chemicals produced via hydrogenation reaction, the role of monometallic and bimetallic nanoparticles catalysts will be discussed in the chemoselective reduction of cinnamaldehyde and citronellal.

show abstract

“…CTL contains two C=C bonds and one C=O bond. Under 120°C, 98.9 % of CTL can be converted to nerol and geraniol (highly demanded precursors for production of flavors, cosmetics, pharmaceuticals and insect repellants) [7,14] with 94.8 % selectivity in 13 h (entry 3, Table 1). Comparatively, under the same reaction temperature, the STH of CTL by the reported Co 3 O 4 /MC catalyst requires 48 h to achieve a 99 % conversion with 95 % selectivity.…”

Section: Coo X @Co Nanoparticle-based Catalyst For Efficient Selectivmentioning

confidence: 99%

CoO_x@Co Nanoparticle‐based Catalyst for Efficient Selective Transfer Hydrogenation of α,β‐Unsaturated Aldehydes

et al. 2019

View full text Add to dashboard Cite

Currently, developing simple and effective catalysts for selective hydrogenation of α,β‐unsaturated aldehydes to unsaturated alcohols is challenging. Herein, an efficient CoOx‐shell/Co‐core structured nanoparticle catalyst is synthesized by a facile ultrasonic‐assisted carbothermal reduction method. The resultant catalyst exhibits outstanding catalytic performance toward the selective transfer hydrogenation of a wide spectrum of α,β‐unsaturated aldehydes into corresponding unsaturated alcohols with over 90 % selectivity. This is the simplest nonprecious metal catalyst to be reported for the selective hydrogenation of unsaturated aldehydes.

show abstract

Catalytic activity of nanoscale borides: Co2B and Ni7B3 in the liquid-phase hydrogenation of citral

Cited by 24 publications

References 35 publications

Synthesis of a Highly Efficient Oxygen‐Evolution Electrocatalyst by Incorporation of Iron into Nanoscale Cobalt Borides

Synthesis of a Highly Efficient Oxygen‐Evolution Electrocatalyst by Incorporation of Iron into Nanoscale Cobalt Borides

Review on heterogeneous catalysts for the synthesis of perfumery chemicals via isomerization, acetalization and hydrogenation

CoO_x@Co Nanoparticle‐based Catalyst for Efficient Selective Transfer Hydrogenation of α,β‐Unsaturated Aldehydes

Contact Info

Product

Resources

About

Catalytic activity of nanoscale borides: Co2B and Ni7B3 in the liquid-phase hydrogenation of citral

Cited by 24 publications

References 35 publications

Synthesis of a Highly Efficient Oxygen‐Evolution Electrocatalyst by Incorporation of Iron into Nanoscale Cobalt Borides

Synthesis of a Highly Efficient Oxygen‐Evolution Electrocatalyst by Incorporation of Iron into Nanoscale Cobalt Borides

Review on heterogeneous catalysts for the synthesis of perfumery chemicals via isomerization, acetalization and hydrogenation

CoOx@Co Nanoparticle‐based Catalyst for Efficient Selective Transfer Hydrogenation of α,β‐Unsaturated Aldehydes

Contact Info

Product

Resources

About

CoO_x@Co Nanoparticle‐based Catalyst for Efficient Selective Transfer Hydrogenation of α,β‐Unsaturated Aldehydes