1) La descarga del recurso depende de la página de origen
2) Para poder descargar el recurso, es necesario ser usuario registrado en Universia

Opción 1: Descargar recurso

Detalles del recurso


[EN] The synthesis of crystalline molecular sieves with pore dimensions that fill the gap between microporous and mesoporous materials is a matter of fundamental and industrial interest(1-3). The preparation of zeolitic materials with extralarge pores and chiral frameworks would permit many new applications. Two important steps in this direction include the synthesis(4) of ITQ-33, a stable zeolite with 18 x 10 x 10 ring windows, and the synthesis(5) of SU-32, which has an intrinsically chiral zeolite structure and where each crystal exhibits only one handedness. Here we present a germanosilicate zeolite (ITQ-37) with extralarge 30-ring windows. Its structure was determined by combining selected area electron diffraction ( SAED) and powder X-ray diffraction (PXRD) in a charge-flipping algorithm(6). The framework follows the SrSi2 (srs) minimal net(7) and forms two unique cavities, each of which is connected to three other cavities to form a gyroidal channel system. These cavities comprise the enantiomorphous srs net of the framework. ITQ-37 is the first chiral zeolite with one single gyroidal channel. It has the lowest framework density (10.3 T atoms per 1,000 angstrom(3)) of all existing 4-coordinated crystalline oxide frameworks, and the pore volume of the corresponding silica polymorph would be 0.38 cm(3) g(-1).

Pertenece a

RiuNet. Repositorio institucional de la Universitat de Valencia  


Sun, Junliang -  Bonneau, Charlotte -  Cantin Sanz, Angel -  Corma Canós, Avelino -  Díaz Cabañas, Mª José -  Moliner Marin, Manuel -  Zhang, Daliang -  Li, Mingrun -  Zou, Xiaodong - 

Id.: 71304165

Idioma: eng  - 

Versión: 1.0

Estado: Final

Palabras claveQUIMICA ORGANICA - 

Tipo de recurso: info:eu-repo/semantics/article  -  info:eu repo/semantics/publishedVersion  - 

Tipo de Interactividad: Expositivo

Nivel de Interactividad: muy bajo

Audiencia: Estudiante  -  Profesor  -  Autor  - 

Estructura: Atomic

Coste: no

Copyright: sí

: Reserva de todos los derechos

Requerimientos técnicos:  Browser: Any - 

Relación: [References] CICYT/MAT2006-14274-C02-01
[References] Nature
[References] http://doi.org/10.1038/nature07957

Fecha de contribución: 24-may-2018


* 0028-0836
* 10.1038/nature07957
* 19407798

Otros recursos del mismo autor(es)

  1. Alternative to visbreaking or delayed coking of heavy crude oil through a short contact time, solid transported bed cracking process [EN] An extra-heavy crude oil was treated at a short contact time in the 510-580 degrees C temperatu...
  2. Opportunities in upgrading biomass crudes [EN] An unconventional crude from biomass (biocrude) has been processed to yield a hydrocarbon strea...
  3. Production of High Quality Syncrude from Lignocellulosic Biomass [EN] Wood chips were hydrothermally treated in near critical point water in the presence of a cataly...
  4. The acid-base and redox reactivity of CeO2 nanoparticles: Influence of the Hubbard U term in DFT plus U studies [EN] The interaction of small molecules with acid-base and redox centers in small Ce21O42 nanopartic...
  5. Synthesis design and structure of a multipore zeolite with interconnected 12- and 10-MR channels [EN] A new molecular sieve, ITQ-38, containing interconnected large and medium pores in its structur...

Otros recursos de la mismacolección

  1. A new model and metaheuristic approach for the energy-based resource-constrained scheduling problem [EN] This article focuses on obtaining sustainable and energy-efficient solutions for limited resour...
  2. Coding SNPs analysis highlights genetic relationships and evolution pattern in eggplant complexes [EN] Brinjal (Solanum melongena), scarlet (S. aethiopicum) and gboma (S. macrocarpon) eggplants are ...
  3. The Harmonic Order Tracking Analysis Method for the Fault Diagnosis in Induction Motors Under Time-Varying Conditions [EN] This paper introduces a new approach for improving the fault diagnosis in induction motors unde...
  4. MAK-10 : A Long Shelf-life Charentais Breeding Line Developed by Introgression of a Genomic Region from Makuwa Melon This work has been carried out in the framework of the Programa de Valorizacion y Recursos Conjuntos...
  5. The programmable processor [EN] Reconfigurable optical chips made from 2D meshes of connected waveguides could pave the way for...

Aviso de cookies: Usamos cookies propias y de terceros para mejorar nuestros servicios, para análisis estadístico y para mostrarle publicidad. Si continua navegando consideramos que acepta su uso en los términos establecidos en la Política de cookies.