Structure-directing study of 1-methylimidazolium-based dication with tetramethylene as spacer length in the synthesis of microporous silicoaluminophosphates dagger

Autores: Tavares, TK; Almeida, G; Variani, YM; Bernardo-Gusmao, K; Vinaches, P; Alcantara, ACS; Paiva, AEM; Gomez-Hortiguela, L; Rojas, A

Artículo; Early Access.
New J. Chem.. vol: . page: 1144-0546.
Fecha: . .
Doi: 10.1039/d0nj06163h.

Resumen:
In this work we study the structure-directing effect of 1-methylimidazolium-based dications that have four methylene units as the spacer length (4BI), as Organic Structure-Directing Agent (OSDA) in [read more]

2021-04-29T17:59:34+02:00Categories: Publications 2021|Tags: , |

Vapor phase acylation of guaiacol with acetic acid over micro, nano and hierarchical MFI and BEA zeolites

Autores: Gutierrez-Rubio, S; Shamzhy, M; Cejka, J; Serrano, DP; Moreno, I; Coronado, JM

Artículo.
Appl. Catal. B-Environ.. vol: 285. page: 0926-3373.
Fecha: may-15. 2021.
Doi: 10.1016/j.apcatb.2020.119826.

Resumen:
Vapor phase acylation of guaiacol with acetic acid was explored over a series of micro, nanocrystalline, and hierarchical MFI and BEA zeolites with different acidic and textural properties using a continuous flow reactor. The main [read more]

Study of the evolution of FeNxCy and Fe3C species in Fe/N/C catalysts during the oxygen reduction reaction in acid and alkaline electrolyte

Autores: Garcia, A; Pascual, L; Ferrer, P; Gianolio, D; Held, G; Grinter, DC; Pena, MGA; Retuerto, M; Rojas, S

Artículo.
J. Power Sources. vol: 490. page: 0378-7753.
Fecha: APR 1. 2021.
Doi: 10.1016/j.jpowsour.2021.229487.

Resumen:
The nature and evolution of FeNxCy moieties in Fe/C/N catalysts has been studied by analysing Fe and N environments. TEM and Fe-XAS reveal the presence of FeNx moieties [read more]

Palladium Nanocatalysts for Cascade C-N Cross-Coupling/Heck Reaction

Autores: Rodriguez-Oliva, I; Losada-Garcia, N; Santos, AS; Marques, MMB; Palomo, JM

Artículo; Early Access.
Asian J. Org. Chem.. vol: . page: 2193-5807.
Fecha: . .
Doi: 10.1002/ajoc.202100077.

Resumen:
Highly stable nanocatalysts have been synthesized in aqueous medium at room temperature by the in situ formation of Pd nanoparticles (PdNPs) embedded in an enzyme net. Different parameters in the synthesis were evaluated such [read more]

2021-04-08T12:18:39+02:00Categories: Publications 2021|Tags: , |

How oxidation state and lattice distortion influence the oxygen evolution activity in acid of iridium double perovskites

Autores: Retuerto, M; Pascual, L; Pique, O; Kayser, P; Salam, MA; Mokhtar, M; Alonso, JA; Pena, M; Calle-Vallejo, F; Rojas, S

Artículo.
J. Mater. Chem. A. vol: 9. page: 2050-7488.
Fecha: 10-mar. 2021.
Doi: 10.1039/d0ta10316k.

Resumen:
In view of iridium’s scarceness and high cost, Ir-containing catalysts for water electrolyzers should have low loadings and maximal utilization. Here, we studied low-Ir-content, highly active, [read more]

Pt-BiVO4/TiO2 composites as Z-scheme photocatalysts for hydrogen production from ethanol: the effect of BiVO4 and Pt on the photocatalytic efficiency

Autores: Mansour, S; Akkari, R; Soto, E; Ben Chaabene, S; Mota, N; Yerga, RNM; Fierro, JLG; Zina, MS

Artículo.
New J. Chem.. vol: 45. page: 1144-0546.
Fecha: mar-07. 2021.
Doi: 10.1039/d0nj05596d.

Resumen:
A series of BiVO4/TiO2 nanocomposites with high surface area have been synthesized by a sol-gel method combined with supercritical drying. BiVO4/TiO2 samples with different BiVO4 loadings were synthesized in order [read more]

2021-04-08T12:01:57+02:00Categories: Publications 2021|Tags: , |

Effect of zeolite structure on the selective catalytic reduction of NO with ammonia over Mn-Fe supported on ZSM-5, BEA, MOR and FER

Autores: Ben Younes, N; Ortigosa, JM; Marie, O; Blasco, T; Mhamdi, M

Artículo; Early Access.
Res. Chem. Intermed.. vol: . page: 0922-6168.
Fecha: . .
Doi: 10.1007/s11164-020-04382-7.

Resumen:
A series of catalysts based on Mn-Fe loaded zeolites was prepared by impregnation and their activity in the selective catalytic reduction of NO with ammonia (NH3-SCR) was investigated. The highest catalytic conversion was recorded [read more]

2021-04-08T11:52:20+02:00Categories: Publications 2021|Tags: , |

Inverse CeO2/CuO WGS catalysts: Influence of the presence of oxygen in the reactant mixture

Autores: Camara, AL; Corberan, VC; Martinez-Arias, A

Artículo.
Catal. Today. vol: 363. page: 0920-5861.
Fecha: mar-01. 2021.
Doi: 10.1016/j.cattod.2019.09.050.

Resumen:
Three catalysts based on inverse configuration of copper-ceria catalysts, i.e. CeO2/CuO and two others in which the copper oxide phase is doped with Mn and Zn, respectively, are examined with respect to their performance for the water-gas shift reaction (WGS) and the [read more]

Immobilization of lipases via interfacial activation on hydrophobic supports: Production of biocatalysts libraries by altering the immobilization conditions

Authors: Arana-Pena, S; Rios, NS; Carballares, D; Goncalves, LRB; Fernandez-Lafuente, R

Article.
Catal. Today. vol: 362. page: 0920-5861.
Date: feb-15. 2021.
Doi: 10.1016/j.cattod.2020.03.059.

Abstract:
Lipases A and B from Candida antarctica (CALA, CALB), and those from Candida rugosa (CRL) and Rhizomucor miehei (RML) have been immobilized on octyl agarose beads under 16 different conditions. The activities of the [read more]

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