Synthesis of cyclohexylphenol via phenol hydroalkylation using Co2P/zeolite catalysts

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

Artículo.
Catal. Today. vol: 390. page: 0920-5861.
Fecha: may-01. 2022.
Doi: 10.1016/j.cattod.2021.11.039.

Resumen:
Cyclohexylphenol (CHP) is a high added-value chemical, extensively used for the preparation of dyes, resins and biocides. This molecule is currently synthetized by phenol alkylation with cyclohexene/cyclohexanol using highly polluting mineral Bronsted acids as catalysts. The [read more]

Semiamorphous Fe-BDC: The missing link between the highly-demanded iron carboxylate MOF catalysts

Autores: Flores, JG; Delgado-Garcia, R; Sanchez-Sanchez, M

Artículo.
Catal. Today. vol: 390. page: 0920-5861.
Fecha: may-01. 2022.
Doi: 10.1016/j.cattod.2021.11.004.

Resumen:
Porous Fe carboxylates are amongst the most promising MOF-based materials due to their low price, low toxicity, metal environments (including open metal sites) and remarkable (meso)porosity variety. Fe-MOFs based on the cluster [Fe3O(X)(solvent)(2)](6+), that is, MIL-101(Fe), MIL-100(Fe) and semiamorphous Fe-BTC, are of [read more]

Ti-PMO materials as selective catalysts for the epoxidation of cyclohexene and vernonia oil

Autores: Awoke, Y; Chebude, Y; Diaz, I

Artículo.
Catal. Today. vol: 390. page: 0920-5861.
Fecha: may-01. 2022.
Doi: 10.1016/j.cattod.2021.10.010.

Resumen:
The aim of this study is to obtain Ti-containing Periodic Mesoporous Organosilica (PMO) materials with catalytic activity in epoxidation reactions. Characterization of the PMO materials using X ray diffraction, N-2 sorption isotherms, chemical analysis (ICP-OES) and UV-vis spectroscopy reveals that the Ti-PMO [read more]

The effect of non-ionic surfactants on the sustainable synthesis of selected MOFs

Autores: Habib, NR; Sainz, R; Taddesse, AM; Diaz, I

Artículo.
Catal. Today. vol: 390. page: 0920-5861.
Fecha: may-01. 2022.
Doi: 10.1016/j.cattod.2021.09.028.

Resumen:
The MOFs selected in this work are NH2-MIL-53(Al), MIL-100(Fe) and UiO-66 type (Zr-BDC and NH2-Zr-BDC). We have tried to assist the sustainable synthesis of MOFs, at room temperature and in water as a solvent, with the presence of non-ionic surfactants: [read more]

Sustainable synthesis of semicrystalline Zr-BDC MOF and heterostructural Ag3PO4/Zr-BDC/g-C3N4 composite for photocatalytic dye degradation

Autores: Yassin, JM; Taddesse, AM; Sanchez-Sanchez, M

Artículo.
Catal. Today. vol: 390. page: 0920-5861.
Fecha: may-01. 2022.
Doi: 10.1016/j.cattod.2021.11.037.

Resumen:
Zr-based MOFs have stimulated the interest of scientific community due to their exceptional variety in composition, structure and chemical environment as well as their consequent applications including photo catalysis. This work presents the successful preparation of nanosized highly-porous Zr-BDC MOFs under sustainable [read more]

Impact of water matrix and oxidant agent on the solar assisted photodegradation of a complex mix of pesticides over titania-reduced graphene oxide nanocomposites

Autores: Luna-Sanguino, G; Ruiz-Delgado, A; Duran-Valle, CJ; Malato, S; Faraldos, M; Bahamonde, A

Artículo.
Catal. Today. vol: 380. page: 0920-5861.
Fecha: nov-15. 2021.
Doi: 10.1016/j.cattod.2021.03.022.

Resumen:
New titania-reduced graphene oxide (TiO2-rGO) nanocomposites have been studied to assess their application in the solar assisted photodegradation of a complex mixing of pesticides (pyrimethanil, isoproturon, alachlor and methomyl) at solar pilot plant, opening the opportunity [read more]

Defective UiO-66(Zr) as an efficient catalyst for the synthesis of bio jet-fuel precursors via aldol condensation of furfural and MIBK

Autores: de la Flor, D; Lopez-Aguado, C; Paniagua, M; Morales, G; Mariscal, R; Melero, JA

Artículo.
J. Catal.. vol: 401. page: 0021-9517.
Fecha: SEP. 2021.
Doi: 10.1016/j.jcat.2021.07.006.

Resumen:
The production of jet-fuel precursors from furfural (FUR) via aldol-condensation with methyl-isobutyl ketone (MIBK) over a defective UiO-66(Zr) catalyst is presented. The resultant C11 adduct (FuMe) would allow the selective production of branched alkanes [read more]

Effect of N-doping and carbon nanostructures on NiCu particles for hydrogen production from formic acid

Autores: Carrales-Alvarado, DH; Lopez-Olmos, C; Dongil, AB; Kubacka, A; Guerrero-Ruiz, A; Rodriguez-Ramos, I

Artículo.
Appl. Catal. B-Environ.. vol: 298. page: 0926-3373.
Fecha: DEC 5. 2021.
Doi: 10.1016/j.apcatb.2021.120604.

Resumen:
A series of NiCu based catalysts were prepared using different carbon nanostructure as support and loading 2.5 wt% of each metal. The studied nanocarbon materials were: reduced graphene oxide (rGO), N-doped reduced graphene oxide [read more]

Preparation, Characterization, and Activity of Pd/PSS-Modified Membranes in the Low Temperature Dry Reforming of Methane with and without Addition of Extra Steam

Authors: Mateos-Pedrero, C; Soria, MA; Guerrero-Ruiz, A; Rodriguez-Ramos, I

Article.
Membranes. vol: 11. page: .
Date: JUL. 2021.
Doi: 10.3390/membranes11070518.

Abstract:
The external surface of a commercial porous stainless steel (PSS) was modified by either oxidation in air at varying temperatures (600, 700, and 800 degrees C) or coating with different oxides (SiO2, Al2O3, and ZrO2). Among them, PSS-ZrO2 appears as the [read more]

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]

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