Results 21 to 30 of about 83,093,681 (218)

Dealumination of ZSM-5 Zeolites with Water [PDF]

open access: yesChemistry Letters, 1987
Abstract Dealumination of a framework of H-ZSM-5 zeolites with water was investigated by 27Al MASNMR. It was found that the rate of dealumination is apparently second-order dependent on the concentration of framework aluminium.
Tsuneji Sano   +8 more
openaire   +1 more source

Preparation and characterization of ZSM-5 zeolite

open access: yesInternational Journal of Computational and Experimental Science and Engineering, 2023
Recently, zeolites attracted considerable research attention because they exhibit adsorption properties, ion exchange capabilities and a good catalytic property, a specific pore size distribution; a unique chemical and thermal properties and several applications.
Sabiha ANAS BOUSSAA   +6 more
openaire   +2 more sources

Contribution of Oxide Supports in Nickel-Based Catalytic Elimination of Greenhouse Gases and Generation of Syngas

open access: yesEnergies, 2021
Carbon dioxide and/or dry methane reforming serves as an effective pathway to mitigate these greenhouse gases. This work evaluates different oxide supports including alumina, Y-zeolite and H-ZSM-5 zeolite for the catalysis of dry reforming methane with ...
Wasim Ullah Khan   +3 more
doaj   +1 more source

Structural Changes of Mo/ZSM-5 Catalysts During the Methane Dehydroaromatization

open access: yesEurasian Chemico-Technological Journal, 2010
The structure changes of Mo/ZSM-5 catalysts with different Mo content (2 and 10 wt. % Mo) and Si/Al atomic ratio (17, 30 and 45) during the methane dehydroaromatization have been investigated by X-ray powder diffractometry, N2 adsorption and ...
Z. R. Ismagilov   +6 more
doaj   +1 more source

Molecular dynamics as a tool to study heterogeneity in zeolites - Effect of Na cations on diffusion of CO and N in Na-ZSM-5 [PDF]

open access: yes, 2014
Zeolites typically contain extra-framework cations to charge-compensate for trivalent Al atom substitutions in the SiO framework. These cations, such as Na, directly interact with quadrupolar guest molecules, such as CO and N, which move through their ...
Newsome, D. (author)   +3 more
core   +1 more source

Influence of Preparation Conditions of Mixed-valence Co/ZSM-5 Zeolites on Their Adsorption and Catalytic Properties in CO Oxidation

open access: yesAdsorption Science & Technology, 2002
The adsorption properties, thermal stability and catalytic activity in CO oxidation of Co 2+ , Co 3+ -containing ZSM-5 zeolite systems with different metal loadings were studied.
Ludmila P. Oleksenko   +2 more
doaj   +1 more source

Investigation of the Properties of Mo/ZSM-5 Catalysts Based on Zeolites with Microporous and Micro–Mesoporous Structures

open access: yesChemistry, 2023
The dehydroaromatization of methane (MDA) is of great interest as a promising process for processing natural and associated petroleum gases, the main component of which is methane. The rapid loss of catalyst activity because of coke formation hinders the
Andrey A. Stepanov   +2 more
doaj   +1 more source

Rapid polymerisation of S2N2 within Na-ZSM-5 channels

open access: yes, 2007
Reaction of S2N2 vapour with Na-ZSM-5 results in rapid polymerisation and inclusion of the resulting (SN)x within the zeolite ...
Roberto S.P. King (7155239)   +3 more
core   +6 more sources

From Atoms to Reactors: A Critical Review of a Decade of Machine Learning in Heterogeneous Catalysis (2017–2026)

open access: yesAngewandte Chemie, EarlyView.
Machine learning has digitalized heterogeneous catalysis from the top of the length scale downward: prediction at the atom and the material is now mature, yet the reactor and the process remain the open frontier. This critical review traces a decade of progress across the full catalytic value chain and asks where the next decade of impact must be won ...
Rafael Larraz, Avelino Corma
wiley   +2 more sources

Synthesis And Characterization Of Zeolite Membranes For Binary Gas Separation [QE391.Z5 T161 2007 f rb]. [PDF]

open access: yes, 2007
Tiga jenis membran zeolit MFI (ZSM-5 dan Silicalite-1) dengan kecacatan minimum telah disintesiskan dengan menggunakan cara yang berlainan. Membran tersebut adalah Silicalite-1 (Si/Al = ∞), Na-ZSM-5 (Si/Al = 25) and B-ZSM-5 (Si/B = 100).
Tan, Sek Choong
core   +1 more source

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