Zobrazeno 1 - 10
of 57
pro vyhledávání: '"Miriam Peña Alvarez"'
Autor:
Tomas Marqueño, Mikhail A. Kuzovnikov, Israel Osmond, Phillip Dalladay-Simpson, Andreas Hermann, Ross T. Howie, Miriam Peña-Alvarez
Publikováno v:
Frontiers in Chemistry, Vol 11 (2024)
The reactivity between NaH and H2 has been investigated through a series of high-temperature experiments up to pressures of 78 GPa in diamond anvil cells combined with first principles calculations. Powder X-ray diffraction measurements show that hea
Externí odkaz:
https://doaj.org/article/831fa4f2d0d3444eb7e028544991fe77
In-situ abiogenic methane synthesis from diamond and graphite under geologically relevant conditions
Autor:
Miriam Peña-Alvarez, Alberto Vitale Brovarone, Mary-Ellen Donnelly, Mengnan Wang, Philip Dalladay-Simpson, Ross Howie, Eugene Gregoryanz
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-5 (2021)
Using diamond anvil cell and high temperature experiments, this work proves that the interaction between deep hydrogen rich fluids and reduced carbon minerals may be an efficient mechanism for producing abiotic hydrocarbons at the upper mantle’s pr
Externí odkaz:
https://doaj.org/article/265ddb38d697452d810facb738dc6690
Autor:
Jack Binns, Miriam Peña-Alvarez, Mary-Ellen Donnelly, Eugene Gregoryanz, Ross T. Howie, Philip Dalladay-Simpson
Publikováno v:
Engineering, Vol 5, Iss 3, Pp 505-509 (2019)
Hydrogen chemistry at extreme pressures is currently subject to extensive research due to the observed and predicted enhanced physical properties when hydrogen is incorporated in numerous binary systems. Despite the high reactivity of hydrogen, the n
Externí odkaz:
https://doaj.org/article/85921eb3824d427a8c7711565cf0eb03
Autor:
Philip Dalladay-Simpson, Jack Binns, Miriam Peña-Alvarez, Mary-Ellen Donnelly, Eran Greenberg, Vitali Prakapenka, Xiao-Jia Chen, Eugene Gregoryanz, Ross T. Howie
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-7 (2019)
Molecular systems are predicted to transform into atomic solids and be metallic at high pressure; this was observed for the diatomic elements iodine and bromine. Here the authors access the higher pressures needed to observe the dissociation in chlor
Externí odkaz:
https://doaj.org/article/6e8240d312e94a9d91cf96adb7c19c88
Author Correction: Band gap closure, incommensurability and molecular dissociation of dense chlorine
Autor:
Philip Dalladay-Simpson, Jack Binns, Miriam Peña-Alvarez, Mary-Ellen Donnelly, Eran Greenberg, Vitali Prakapenka, Xiao-Jia Chen, Eugene Gregoryanz, Ross T. Howie
Publikováno v:
Nature Communications, Vol 10, Iss 1, Pp 1-2 (2019)
The original version of this Article omitted references to previous experimental reports on solid hydrogen that are relevant for a full understanding of the context of the previous work. The added references are: 47. Akahama, Y. et al. Evidence from
Externí odkaz:
https://doaj.org/article/3fa41ef5e89843b998ccf29ea76c97eb
Autor:
Wan, Xu, Xiao-Di, Liu, Miriam, Peña-Alvarez, Hua-Chao, Jiang, Philip, Dalladay-Simpson, Benoit, Coasne, Julien, Haines, Eugene, Gregoryanz, Mario, Santoro
Publikováno v:
The journal of physical chemistry. C, Nanomaterials and interfaces. 125(13)
Our combined high-pressure synchrotron X-ray diffraction and Monte Carlo modeling studies show super-filling of the zeolite, and computational results suggest an occupancy by a maximum of nearly two inserted H
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=pmid________::5640a4d3d7c9372b10b98748fe688fb1
https://pubmed.ncbi.nlm.nih.gov/36158606
https://pubmed.ncbi.nlm.nih.gov/36158606
Autor:
Graeme J. Ackland, Eugene Gregoryanz, Chris J. Pickard, Bartomeu Monserrat, Philip Dalladay-Simpson, Jack Binns, Miguel Martinez-Canales, Ross T. Howie, Miriam Peña-Alvarez
Publikováno v:
Pena Alvarez, M, Binns, J, Martinez-Canales, M, Monserrat, B, Ackland, G J, Dalladay-Simpson, P, Howie, R T, Pickard, C J & Gregoryanz, E 2021, ' Synthesis of Weaire–Phelan Barium Polyhydride ', The Journal of Physical Chemistry Letters, vol. 12, no. 20, pp. 4910-4916 . https://doi.org/10.1021/acs.jpclett.1c00826
By combining pressures up to 50 GPa and temperatures of 1200 K, we synthesize the novel barium hydride, Ba8H46, stable down to 27 GPa. We use Raman spectroscopy, X-ray diffraction, and first-principles calculations to determine that this compound ado
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::297ba382a52bda02c4656599453f8705
https://doi.org/10.1021/acs.jpclett.1c00826
https://doi.org/10.1021/acs.jpclett.1c00826
Autor:
M. Carmen Ruiz Delgado, Rosie Nash, Yolanda Vida, Víctor Hernández Jolín, Valentín G. Baonza, Andrés Pérez Guardiola, Miriam Peña-Alvarez, Irene Badía-Domínguez, František Hartl, Sandra Rodríguez González, Deliang Wang, J.C. García, Juan T. López Navarrete, Hongxiang Li
Publikováno v:
RUA. Repositorio Institucional de la Universidad de Alicante
Universidad de Alicante (UA)
Dominguez, I B, Pena Alvarez, M, Wang, D, Guardiola, A P, Vida, Y, Rodriguez Gonzalez, S, Lopez Navarrete, J T, Hernandez Jolin, V, Sancho Garcia, J C, Garcia Baonza, V, Nash, R, Hartl, F, Li, H & Ruiz Delgado, M C 2021, ' Dynamic Covalent Properties of a Novel Indolo[3,2-b]carbazole Diradical ', Chemistry-A European Journal, vol. 27, no. 17, pp. 5509-5520 . https://doi.org/10.1002/chem.202005211
Universidad de Alicante (UA)
Dominguez, I B, Pena Alvarez, M, Wang, D, Guardiola, A P, Vida, Y, Rodriguez Gonzalez, S, Lopez Navarrete, J T, Hernandez Jolin, V, Sancho Garcia, J C, Garcia Baonza, V, Nash, R, Hartl, F, Li, H & Ruiz Delgado, M C 2021, ' Dynamic Covalent Properties of a Novel Indolo[3,2-b]carbazole Diradical ', Chemistry-A European Journal, vol. 27, no. 17, pp. 5509-5520 . https://doi.org/10.1002/chem.202005211
This work describes the synthesis and properties of a dicyanomethylene‐substituted indolo[3,2‐b]carbazole diradical ICz‐CN. This quinoidal system dimerises almost completely to (ICz‐CN)2, which contains two long C(sp3)−C(sp3) σ‐bonds bet
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::624f465821a42e020c56dd8e7306a04a
https://doi.org/10.1002/chem.202005211
https://doi.org/10.1002/chem.202005211
Autor:
Graeme J. Ackland, Ross T. Howie, Peter Cooke, Philip Dalladay-Simpson, Miriam Peña-Alvarez, Ioan B. Magdău, Xiao-Di Liu, Veronika Afonina, Eugene Gregoryanz
Publikováno v:
Pena Alvarez, M, Afonina, V, Dalladay-Simpson, P, Liu, X-D, Howie, R T, Cooke, P, Magdau, I B, Ackland, G J & Gregoryanz, E 2020, ' Quantitative rotational to librational transition in dense H2 and D2 ', The Journal of Physical Chemistry Letters, vol. 11, no. 16, pp. 6626-6631 . https://doi.org/10.1021/acs.jpclett.0c01736
Raman spectroscopy demonstrates that the rotational spectrum of solid hydrogen, and its isotope deuterium, undergo profound transformations upon compression while still remaining in phase I. We show that these changes are associated with a loss of qu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bd5228ba091bf011c05f7dd0157d7cd1
https://doi.org/10.1021/acs.jpclett.0c01736
https://doi.org/10.1021/acs.jpclett.0c01736
Autor:
Philip Dalladay-Simpson, Miriam Peña-Alvarez, Duck Young Kim, Yu He, Jack Binns, Eugene Gregoryanz, Mary-Ellen Donnelly, Ross T. Howie, Mengnan Wang
Publikováno v:
Binns, J, He, Y, Donnelly, M-E, Pena Alvarez, M, Wang, M, Kim, D, Gregoryanz, E, Dalladay-Simpson, P & Howie, R 2020, ' Complex Hydrogen Substructure in Semimetallic RuH4 ', The Journal of Physical Chemistry Letters, vol. 11, no. 9, pp. 3390-3395 . https://doi.org/10.1021/acs.jpclett.0c00688
When compressed in a matrix of solid hydrogen, many metals form compounds with increasingly high hydrogen contents. At high density, hydrogenic sublattices can emerge, which may act as low-dimensional analogues of atomic hydrogen. We show that at hig
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2430e468b96922c37c2cb7909c3af473
https://doi.org/10.1021/acs.jpclett.0c00688
https://doi.org/10.1021/acs.jpclett.0c00688