Results 11 to 20 of about 19,295 (264)

Molecular sieves [PDF]

open access: yesEndeavour, 1964
AbstractThe zeolites form a numerous group of structurally diverse, porous, crystalline aluminosilicates. The naturally‐occurring zeolites arise by hydrothermal action of solutions in basaltic rocks and also as large sedimentary deposits. The naturally‐occurring species have been augmented by a number of synthetic zeolites without any known natural ...
openaire   +1 more source

Hydroisomerization of n-Hexadecane Over Nickel-Modified SAPO-11 Molecular Sieve-Supported NiWS Catalysts: Effects of Modification Methods

open access: yesFrontiers in Chemistry, 2022
The complexation-excessive impregnation modification method, which was original in this study, and the ion-exchange method and the in situ modification method were used to synthesize Ni-modified SAPO-11 molecular sieves.
Xiaojun Dai   +4 more
doaj   +1 more source

Application Research on the Adsorption of Cadmium Ion in Wastewater by Zeolite Molecular Sieve

open access: yesChemical Engineering Transactions, 2018
In this paper, the synthetic zeolite molecular sieve is used as the adsorbent to study the application of zeolite molecular sieves for the adsorption of cadmium ions in wastewater.
Minghua Wang, Honglan Cai, Jiang Zhang
doaj   +1 more source

Thermal Solution for Kerosene Crude Oil by Kirkuk Molecular Sieves [PDF]

open access: yesمجلة التربية والعلم, 2006
The study included upgrading kerosene of kirkuk crude oil by performing catalytic cracking for kerosene in vapor phase over molecular selves (5A°) as catalyst at temperatures of (400,500,550 and 600)°C ,using thermally controlled tubal furnace.
Ragheed Ghazal
doaj   +1 more source

Density Functional Theory Study on the Effect of Isomorphic Substitution of FAU Molecular Sieve on N2 Adsorption Performance

open access: yesAdvances in Condensed Matter Physics, 2021
Low pressure and anoxia are the main characteristics of the environment in the Tibetan Plateau, which means people living there have a large demand for oxygen to reduce the symptoms of altitude sickness.
Mengya Wang   +9 more
doaj   +1 more source

A novel heterogenized Ni/β-diimine/SBA-15 complex applied for catalytic ethylene oligomerization

open access: yesResults in Chemistry, 2021
Catalytic oligomerization of ethylene performed with the sterically hindered β-diimine ligand 2-(2,6-diisopropylphenyl)-amine-4-(2,6-diisopropylphenyl)-imine-2-pentene covalently ancored on SBA-15 mesoporous support employing the alkosilane 3 ...
Adriano Martinez Basso   +4 more
doaj   +1 more source

Modificação de zeólitas para uso em catálise Modifying zeolites for use in catalysis

open access: yesQuímica Nova, 2001
The use of zeolites and other molecular sieves as catalysts is discussed at an introductory level. The text includes a brief historic background on the use of zeolites in catalysis, and a discussion of some chemical and physical properties of silicalite,
Fernando J. Luna, Ulf Schuchardt
doaj   +1 more source

Structural and Textural Properties of Al/Cu- and Al/Zn-Pillared Clays for Ethanol Conversion

open access: yesCrystals
A montmorillonite sample was pillared using mixed solutions of Al/Cu and Al/Zn as the pillaring agent. Al/Cu- and Al/Zn-pillared clays were applied in an ethanol conversion reaction.
Lamara M. dos Santos   +4 more
doaj   +1 more source

Perfluoropolymer/Molecular Sieve Mixed-Matrix Membranes

open access: yesMembranes, 2019
Despite the outstanding chemical, thermal and transport properties of amorphous and glassy perfluorinated polymers, only few works exist on the preparation and transport properties of perfluoropolymer/molecular sieves mixed-matrix membranes (MMMs ...
Gianni Golemme, Anna Santaniello
doaj   +1 more source

ECO-FRIENDLY ENZYMATIC SYNTHESIS OF ANISYL PROPIONATE MEDIATED BY LIPASE B FROM CANDIDA ANTARCTICA

open access: yesStudia Universitatis Babes-Bolyai Chemia, 2021
In this paper we report a biocatalytic approach for the efficient synthesis of anisyl propionate by direct esterification of anisyl alcohol with propionic acid mediated by commercially available Novozym 435, in presence of molecular sieves which serves ...
Diana Maria SCROB   +2 more
doaj   +1 more source

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