Results 21 to 30 of about 31,953 (237)

The Effect of Sodium on the Catalytic Activity of ZnO-Al2O3/ZSM-5 and SnO-Al2O3/ZSM-5 for the Transesterification of Vegetable Oil with Methanol [PDF]

open access: yes, 2009
In order to elucidate the effect of sodium on the activity of ZSM-5 supported metal oxides catalysts (ZnO-Al2O3/ZSM-5 and SnO-Al2O3/ZSM-5) for the transesterification of soybean oil with methanol, ZSM-5 supported metal oxides were prepared with and ...
Kim, Manhoe   +3 more
core   +2 more sources

Mass Transfer Behavior of Benzene in Hierarchically Structured ZSM-5

open access: yesFrontiers in Chemistry, 2019
A series of ZSM-5 zeolites with hierarchical porous structure were synthesized using NaOH solutions treatment method. The structural and acidity properties of hierarchical ZSM-5 zeolites as-synthesized were characterized by X-ray diffraction (XRD), N2 ...
Xiuhong Meng   +5 more
doaj   +1 more source

Synthesis and Characterization of Co/Ni/CoNi-ZSM-5 Catalyst for Hydrogen Production

open access: yesMATEC Web of Conferences, 2018
Nickel is commonly used as a catalyst in hydrogen production. However, the use of nickel catalysts in the steam reforming process has the disadvantage of coke formation and high cost.
Widayat Widayat   +3 more
doaj   +1 more source

Production of methyl ethyl ketone from biomass using a hybrid biochemical/catalytic approach [PDF]

open access: yes, 2013
The recent demand for sustainable routes to fuels and chemicals has led to an increased amount of research in conversion of natural resources. A potential approach for conversion of biomass to fuels and chemicals is to combine biochemical and chemical ...
Hohn, Keith L.   +3 more
core   +2 more sources

Use of Zeolite ZSM-5 for Loading and Release of 5-Fluorouracil

open access: yesJournal of Chemistry, 2015
Samples of zeolite ZSM-5 have been synthesized in both the sodium form (ZSM-5) and the acid activated form (H-ZSM-5). In addition, each of these two forms was prepared in the two molar SiO2/Al2O3 ratios of 169 and 15.
Ruba A. Al-Thawabeia   +1 more
doaj   +1 more source

Adsorption of CO2 on ZSM-5 Zeolite: Analytical Investigation via a Multilayer Statistical Physics Model

open access: yesApplied Sciences, 2022
In this paper, a synthesized zeolite (ZSM-5) is used as an adsorbent to analyze the adsorption phenomenon of carbon dioxide. This investigation, based on the statistical physics treatment, applied the multilayer model with saturation to understand the ...
Fatma Aouaini   +5 more
doaj   +1 more source

The Use of WO3-ZSM-5 Zeolites in the Dehydration of Monosaccharides

open access: yesChemical Engineering Transactions, 2021
In this work, a procedure was developed for the synthesis of WO3-containing catalysts based on zeolites of the ZSM-5 type. Zeolites with different Si/Al ratios and different numbers of acid sites were used: ZSM-5-CVM, ZSM-5-CVN and ZSM-5-Acros.
Olga V. Kislitsa   +4 more
doaj   +1 more source

Zeolite-​encapsulated 2-​(o-​aminophenyl)​benzimidazole complexes: synthesis, characterization and catalytic activity [PDF]

open access: yes, 2011
Cobalt(II)​, copper(II) and zinc(II) complexes of 2-​(o-​aminophenyl)​benzimidazole (AmPhBzlH) encapsulated in the super cages of zeolite-​Y and ZSM-​5 were synthesized and characterized by spectroscopic studies (IR, UV​/visible, EPR)​, elemental ...
Mahendra, K.N.   +2 more
core   +2 more sources

Esterification of methacrylic acid with ethylene glycol over heteropolyacid supported on ZSM-5 [PDF]

open access: yes, 2011
Esterification of methacrylic acid with ethylene glycol was carried out over Heteropolyacids [HPA: H4SiW12O40 (STA) and H3PW12O40 (PTA)] supported on ZSM-5.
A, Prabhakarn   +2 more
core   +1 more source

Synthesis of porous silicates [PDF]

open access: yes, 1995
The issues of importance and future concern in the synthesis of porous silicates and porous materials that contain a large fraction of silica, e.g. zeolites and other crystalline molecular sieves, are reviewed. The thermodynamics of zeolite synthesis are
Davis­, M. E., Helmkamp, M. M.
core   +1 more source

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