نتایج جستجو برای: mfi zeolite nanosheet
تعداد نتایج: 11449 فیلتر نتایج به سال:
Zeolite crystals offering a short diffusion pathway through the pore network are highly desired for number of catalytic and molecule separation applications. Herein, we develop simple synthetic strategy toward reducing thickness along b-axis MFI-type crystals, thus providing path straight channel. Our approach combines preliminary aging fluoride-assisted low-temperature crystallization. The syn...
The adsorption structures of dimethyl ether (DME) on silicalite-1 zeolite (MFI-type) are determined using single-crystal X-ray diffraction. The structure of low-loaded DME-silicalite-1 indicates that all DME molecules are located in the sinusoidal channel, which is the most stable sorption site based on the van der Waals interaction between DME and the framework. The configuration of guest mole...
A high-loading Ga-exchanged MFI zeolite was developed for efficient ethane dehydrogenation. Its high catalytic performance is ascribed to both the low amount of Brønsted acid sites and major formation [GaH 2 ] + ions among isolated Ga hydrides.
In order to improve the sensing properties of tin dioxide gas sensor, four kinds of different SiO₂/Al₂O₃ ratio, different particle size of MFI type zeolites (ZSM-5) were coated on the SnO₂ to prepared zeolite modified gas sensors, and the gas sensing properties were tested. The measurement results showed that the response values of ZSM-5 zeolite (SiO₂/Al₂O₃ = 70, grain size 300 nm) coated SnO₂ ...
The oxidative cleavage of vicinal diols to carboxylic acids was investigated over heterogeneous Fe/MFI catalysts in aqueous medium, with green oxidant H2O2 and mild reaction conditions. High conversions selectivities (X=90 %, S=79 %) were achieved for the ethylene glycol. Further substrates also tested broadening relevance this catalyst. employment non-noble abundant Fe as active metal MFI-type...
We present a systematic study to investigate the effects of nonframework cations and the role of phonon scattering mechanisms on the thermal transport properties of zeolite LTA, via experiment and semiempirical lattice dynamics calculations. Our study is motivated by the increasing interest in accurate measurements and mechanistic understanding of the thermal transport properties of zeolite mat...
The influence of the zeolite framework structure on formation N 2 O during ammonia-SCR NO x was studied for three different copper-functionalized samples, namely Cu-SSZ-13 (CHA), Cu-ZSM-5 (MFI), and Cu-BEA (BEA).
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