A combination of proton spin diffusion NMR and molecular simulations to probe supramolecular assemblies of organic molecules in nanoporous materials

Authors: Dib, E; Bernardo-Maestro, B; Lopez-Arbeloa, F; Perez-Pariente, J; Gomez-Hortiguela, L

Article.
Dalton Trans.. vol: 51. page: 1477-9226.
Date: APR 5. 2022.
Doi: 10.1039/d2dt00497f.

Abstract:
In this work we show the use of high-resolution H-1 MAS NMR to distinguish between two kinds of aggregation states of (1R,2S)-ephedrine, a chiral organic structure directing agent, occluded within AFI-type microporous aluminophosphates. We investigate in particular [read more]

2022-05-05T18:12:01+02:00Categories: Publications 2022|Tags: , |

The use of inorganic Al-HMS as a support for NiMoW sulfide HDS catalysts

Authors: Huirache-Acuna, R; Zepeda, TA; Vazquez, PJ; Rivera-Munoz, EM; Maya-Yescas, R; Pawelec, B; Alonso-Nunez, G

Article.
Inorg. Chim. Acta. vol: 524. page: 0020-1693.
Date: sep-01. 2021.
Doi: 10.1016/j.ica.2021.120450.

Abstract:
Inorganic hexagonal mesoporous silica (HMS) and aluminum modified HMS materials (Al-HMS) were prepared and used as supports of transition metal sulfide hydrodesulfurization (HDS) catalysts based on nickel, molybdenum, and tungsten as active phase. [read more]

2021-09-01T00:00:00+02:00Categories: Publications 2021|Tags: , |

Non-noble MNP@MOF materials: synthesis and applications in heterogeneous catalysis

Authors: Habib, NR; Asedegbega-Nieto, E; Taddesse, AM; Diaz, I

Review.
Dalton Trans.. vol: 50. page: 1477-9226.
Date: AUG 14. 2021.
Doi: 10.1039/d1dt01531a.

Abstract:
Transition metals have a long history in heterogeneous catalysis. Noble or precious transition metals have been widely used in this field. The advantage of noble and precious metals is obvious in ‘heterogeneous catalysis’. However, the choice of Earth abundant [read more]

2021-08-14T00:00:00+02:00Categories: Publications 2021|Tags: , |

Synthesis of large-pore zeolites from chiral structure-directing agents with twol-prolinol units

Authors: Gomez-Hortiguela, L; Mayoral, A; Liu, HN; Sierra, L; Vaquerizo, L; Mompean, C; Perez-Pariente, J

Article.
Dalton Trans.. vol: 49. page: 1477-9226.
Date: jul-28. 2020.
Doi: 10.1039/d0dt01834a.

Abstract:
In this work, we perform an in-depth experimental and computational study about the structure-directing effect of two new chiral organic quaternary ammonium dications bearing twoN-methyl-prolinol units linked by a xylene spacer inparaormetarelative orientation, displaying [read more]

2020-07-28T00:00:00+02:00Categories: Publications 2020|Tags: , |

Structural characterization of HPM-7, a more ordered than expected germanosilicate zeolite

Authors: Lu, P; Zhang, YP; Mayoral, A; Gomez-Hortiguela, L; Camblor, MA

Article.
Dalton Trans.. vol: 49. page: 1477-9226.
Date: jun-07. 2020.
Doi: 10.1039/d0dt00818d.

Abstract:
HPM-7, a germanosilicate synthesized using long imidazolium-based dications with two different linkers, is shown to possess the POS topology, although disorder may exist but it is very difficult to discern. First, three simple ordered polymorphs (POS-A to POS-C) [read more]

2020-06-07T00:00:00+02:00Categories: Publications 2020|Tags: , |

Synthesis of a germanosilicate zeolite HPM-12 using a short imidazolium-based dication: structure-direction by charge-to-charge distance matching

Authors: Lu, P; Gomez-Hortiguela, L; Gao, ZH; Camblor, MA

Article.
Dalton Trans.. vol: 48. page: 1477-9226.
Date: DEC 28. 2019.
Doi: 10.1039/c9dt04089g.

Abstract:
A short imidazolium based dication, with only three methylene units in the spacer linker, selectively directs the crystallization of zeolite HPM-12 (*UOE) as long as there is enough germanium present in the synthesis gel. The integrity of the dication [read more]

2020-05-04T12:35:57+02:00Categories: Publications 2019|Tags: , |

Viologen-modified electrodes for protection of hydrogenases from high potential inactivation while performing H-2 oxidation at low overpotential

Authors: Oughli, AA; Velez, M; Birrell, JA; Schuhmann, W; Lubitz, W; Plumere, N; Rudiger, O

Article.
Dalton Trans.. vol: 47. page: 1477-9226.
Date: AUG 21. 2018.
Doi: 10.1039/c8dt00955d.

Abstract:
In this work we present a viologen-modified electrode providing protection for hydrogenases against high potential inactivation. Hydrogenases, including O-2-tolerant classes, suffer from reversible inactivation upon applying high potentials, which limits their use in [read more]

2020-05-29T10:39:41+02:00Categories: publications2018|Tags: , |

Synthesis of pure silica MFI zeolites using imidazolium-based long dications. A comparative study of structure-directing effects derived from a further spacer length increase

Authors: Lu, P; Gomez-Hortiguela, L; Camblor, MA

Article.
Dalton Trans.. vol: 47. page: 1477-9226.
Date: jun-14. 2018.
Doi: 10.1039/c8dt01127c.

Abstract:
Length-dependent structure direction of linear methylimidazolium-based dications towards MFI zeolite, previously known only for the tetramethylene spacer, has also been found for octamethylene and decamethylene spacers. This works only under highly concentrated conditions, whereas dilution always tends to favor TON, a default [read more]

2020-05-29T10:56:23+02:00Categories: publications2018|Tags: , |

Greener synthesis of Cu-MOF-74 and its catalytic use for the generation of vanillin

Authors: Flores, JG; Sanchez-Gonzalez, E; Gutierrez-Alejandre, A; Aguilar-Pliego, J; Martinez, A; Jurado-Vazquez, T; Lima, E; Gonzalez-Zamora, E; Diaz-Garcia, M; Sanchez-Sanchez, M; Ibarra, IA

Article.
Dalton Trans.. vol: 47. page: 1477-9226.
Date: APR 7. 2018.
Doi: 10.1039/c7dt04701k.

Abstract:
A greener synthesis of Cu-MOF-74 was obtained, for the first time, in methanol as the unique solvent and at room temperature. Full characterisation of the [read more]

2020-05-29T10:52:41+02:00Categories: publications2018|Tags: , |

Lamellar zirconium phosphates to host metals for catalytic purposes

Authors: Ballesteros-Plata, D; Infantes-Molina, A; Rodriguez-Aguado, E; Braos-Garcia, P; Rodriguez-Castellon, E

Article.
Dalton Trans.. vol: 47. page: 1477-9226.
Date: mar-07. 2018.
Doi: 10.1039/c7dt03717a.

Abstract:
In the present study a porous lamellar zirconium phosphate heterostructure (PPH) formed from zirconium(IV) phosphate expanded with silica galleries (P/Zr molar ratio equal to 2 and (Si + Zr)/P equal to 3) was prepared to host noble metals. [read more]

2020-05-29T10:45:30+02:00Categories: publications2018|Tags: , |

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