A5005302426- High-pressure geophysics and materials
- Metal and Thin Film Mechanics
- Crystal Structures and Properties
- Boron and Carbon Nanomaterials Research
- X-ray Diffraction in Crystallography
- Advanced materials and composites
- Advanced ceramic materials synthesis
- Inorganic Chemistry and Materials
- Diamond and Carbon-based Materials Research
- Intermetallics and Advanced Alloy Properties
- MXene and MAX Phase Materials
- Advanced Condensed Matter Physics
- Luminescence Properties of Advanced Materials
- Hydrogen Storage and Materials
- Electronic and Structural Properties of Oxides
- Nuclear materials and radiation effects
- ZnO doping and properties
- High-Temperature Coating Behaviors
- High Entropy Alloys Studies
- Magnetic and transport properties of perovskites and related materials
- Rare-earth and actinide compounds
- Biofuel production and bioconversion
- Catalysts for Methane Reforming
- Food composition and properties
- Polymer Nanocomposites and Properties
Universidad del Papaloapan
2016-2025
Goethe University Frankfurt
2006-2020
Instituto Tecnológico de Tuxtepec
2016
National Museum of Nature and Science
2012
Universidad Autónoma del Estado de Morelos
2009
Institut Lavoisier de Versailles
2007
Curtin University
2007
Kiel University
2007
Ludwig-Maximilians-Universität München
2007
Universidad de la Ciénega
2005
We report the synthesis, structure, and properties of novel bulk rhenium nitrides, hexagonal ${\mathrm{Re}}_{2}\mathrm{N}$, ${\mathrm{Re}}_{3}\mathrm{N}$. Both phases have very high moduli $>400\text{ }\text{ }\mathrm{GPa}$, similar to most incompressible binary transition-metal (TM) carbides nitrides found date. However, in contrast other TM ${\mathrm{Re}}_{3}\mathrm{N}$ is better placed for potential technological applications, as it can be formed at relatively moderate pressures (13--16...
The use of rhenium-based catalysts (Re2C, Re3B, ReB2, and ReS2) obtained by mechanosynthesis in the pyrolysis cellulose lignin from 500 to 800 °C using 10 20 wt.% is reported. ReS2 has been reported for first time. catalytic resulted maximum H2 production at catalyst, with 44% yield a Re3B catalyst. In contrast, also showed under same conditions, an 86.1% NiO/SiO2 catalyst; however, catalyst did not drastically enhance production. formation thermocatalytic process, whereas entirely thermic...
The recent discovery of new Pt-based minerals has opened up the opportunity to generate synthetic materials. Here, geologically inspired approaches designing and synthesizing novel platinum alloys, from ternary high-entropy alloys (HEAs), are showcased. Empirical mathematical models thermodynamic parameters were used predict formation solid solutions with single-phase structures in (Pt3-xPdx)(Cu2-yNiySn) system. Five compounds, having ordered L10-type structures, have been obtained at...
Abstract A study of the reaction rhenium with carbon at high-( P , T ) conditions up to max = 67 GPa and 3800 K is presented. hexagonal ReC x was identified as stable phase conditions. composition 0.5 proposed. No evidence for a cubic polymorph rocksalt structure, suggested in literature, or any other found - explored. preliminary rhenium-carbon diagram has been derived properties such bulk moduli elastic stiffness coefficients were obtained.
We show that the correct space group of ${\text{HoBaCo}}_{4}{\text{O}}_{7}$ at ambient conditions is $P{6}_{3}mc$ and no temperature-induced or pressure-induced structural phase transition occurs down to 100 K up 9 GPa. The compressibility mainly determined by a combination bond compression changes in three-membered six-membered rings kagom\'e layers. more compressible than structurally related compounds due comparatively Co-O bonds. analysis allows us propose an atomistic model for...
The crystal structure of diaspore, AlO(OH), has been investigated by in situ single-crystal synchrotron X-ray diffraction at ~50 GPa using the diamond-anvil cell technique. Diaspore is found to retain its up 51.5 room temperature, which more than 30 above transition pressure δ-AlO(OH) quenched high-temperature experiments and derived from density functional theory calculations. compression anisotropic largest for a axis. This can be explained fact that structural response mainly due...
The crystal structure of the high-pressure phase bismuth gallium oxide, Bi(2)Ga(4)O(9), was determined up to 30.5 (5) GPa from in situ single-crystal in-house and synchrotron X-ray diffraction. Structures were refined at ambient conditions pressures 3.3 (2), 6.2 (3), 8.9 (1) 14.9 (3) for low-pressure phase, 21.4 phase. mode-Grüneisen parameters Raman modes changes induced by transition obtained spectroscopic measurements. Complementary quantum-mechanical calculations based on...
The high-pressure behavior of KIO(3) was studied up to 30 GPa using single crystal and powder x-ray diffraction, Raman spectroscopy, second harmonic generation (SHG) experiments density functional theory (DFT)-based calculations. Triclinic shows two pressure-induced structural phase transitions at 7 14 GPa. Single diffraction 8.7(1) employed solve the structure first (space group R3, a = 5.89(1) Å, α 62.4(1)°). bulk modulus, B, this obtained by fitting order Birch-Murnaghan equation state...
The high pressure high-temperature stability of tantalum mononitrides was investigated at 8–23.5 GPa and 1400–3500 K by in situ powder synchrotron X-ray diffraction using the laser-heated diamond anvil cell ϵ-TaN as starting material. transformation from to ϑ-TaN observed confirmed stable high-(p, T) mononitride. At temperatures above 3000 16–23.5 GPa, formation a novel quenchable phase observed. Under nitrogen excess reacted with η-Ta2N3 main 8–13 about 2000 K. This behaviour is similar...
Starches from the Macho ( Musa paradisiaca L.) and Roatan sapientum banana varieties were chemically modified by sodium trimetaphosphate (STMP) cross‐linking. Cross‐linking affected pasting properties of starch, with more pronounced changes observed in variety than starch. In turn, this result indicated that former starch source is susceptible to STMP The swelling solubility profiles exhibited an important decrease cross‐linking, which was caused increased ordering internal granule structure...