Gold Functionalized Supported Ionic Liquids Catalyst for CO Oxidation

Ivanova, Svetlana; Bobadilla, Luis F.; Penkova, Anna; Romero-Sarria, Francisca; Odriozola, J.A.

doi:10.3390/catal1010052

Cited by 5 publications

(3 citation statements)

References 47 publications

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“…The observable properties of these ionic liquids are related directly to the presence of intra-or inter-molecular interactions in their structures and, also to the orientations of cation and anion, as evidenced by using electrochemical studies for 1-butyl-3-methylimidazolium dicyanamide at the platinum-liquid interface by Aliaga and Baldelli [13]. For these reasons, the structural studies of these species are of great interest to explain their behaviour in different media and, especially when these species interact with other [1,3,4,6,9,13,15]. For the same reasons, the vibrational studies of these ionic liquids are of great significance to identify interactions between cation and anion, as reported by Wang et al [14] for 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid by using the 31 P NMR and FT-IR spectra.…”

Section: Introductionmentioning

confidence: 99%

Effect of cation-anion interactions on the structural and vibrational properties of 1-buthyl-3-methyl imidazolium nitrate ionic liquid

Kausteklis

Aleksa

Iramain

et al. 2018

Journal of Molecular Structure

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Section: Introductionmentioning

confidence: 99%

Effect of cation-anion interactions on the structural and vibrational properties of 1-buthyl-3-methyl imidazolium nitrate ionic liquid

Kausteklis

Aleksa

Iramain

et al. 2018

Journal of Molecular Structure

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“…In the first paper, Centeno and coworkers [7] investigated gold nanoparticles dispersed on an ionic liquid layer deposited over alumina. The size of gold particles strongly depends on the solvent employed.…”

Section: The Present Issuementioning

confidence: 99%

New Frontiers in Gold Catalyzed Reactions

Liotta

2012

Catalysts

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BackgroundFor many years, gold has been regarded as a poor catalyst due to its chemical inertness towards reactive molecules such as oxygen and hydrogen. The interest in using gold in catalysis has increased during the last 20 years, since Haruta reported the surprisingly high activity in CO oxidation at low temperature for small (3-5 nm) gold particles supported on various oxides.Since then, gold nanostructured catalysts have attracted, rapidly growing attention, due to their potential applicability in various reactions of industrial and environment interest. The catalytic applications of gold have been, indeed, explored in several processes, such as NO removal, catalytic combustion of Volatile Organic Compound (VOC), hydrotreatment and chemical processing, and purification of hydrogen for fuel cell applications. Moreover, gold catalysts are, nowadays, employed as air-cleaning devices, for respiratory protection (gas masks), as sensors to detect individual poisonous or flammable gases, as well as deodorizers. Gold catalysts with low-temperature activity towards CO and hydrocarbons oxidation are suitable also for vehicles exhaust gas treatment, especially during the cold start period. Accordingly, at the end of 2007 the company Nanostellar announced the development of a diesel exhaust catalyst using a first catalytic component based on gold alloyed with palladium as the active component for CO oxidation. Nevertheless, despite the extensive recent efforts addressing the extraordinary catalytic behavior of gold nanoparticles, the attainment of the best performing supported gold catalyst is still a challenge and the origin of the structure sensitivity of Au catalytic activity is yet to be completely unravelled. The main reason for this is ascribed to the multiplicity of factors influencing the catalytic activity, including the size of the Au clusters, the oxidation state of gold, the nature of the support material, the Au-support interface, and the preparation method. The catalytic performances of gold nanoparticles have been correlated, in turn, with electronic (quantum size effect, oxidation state), structural and support (defects, perimeter interface) effects, but a OPEN ACCESS

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“…Gold and gold-based catalysts are very effective for both heterogeneous and homogenous catalysis. In particular, the excellent performance of gold-based catalysts is widely recognized, after the pioneering work of Haruta and co-workers, in the redox reaction of the low-temperature carbon monoxide oxidation reaction [5][6][7][8][9][10]. Progress will strongly depend on new effective catalysts for high energy storage applications.…”

Section: Introductionmentioning

confidence: 99%