Results 101 to 110 of about 180,400 (354)

Catalytic Pyrolysis of Cellulose Biomass to Aromatic Hydrocarbons Using Modified HZSM-5 Zeolite

open access: yesNanomaterials
Gallium-modified Zeolite Socony Mobil-5 (ZSM-5) zeolites were synthesized using wetness impregnation and hydrothermal synthesis methods. The structural and acidic properties of the zeolites were characterized through an analytical instrument, which ...
Jian Li   +5 more
doaj   +1 more source

Acidity of Zeolites

open access: yes
Zeolites, known for their crystallinity and porosity, exhibit versatile acid functionalities, making them valuable industrial catalysts. This chapter discusses the acidity of zeolites, including Brønsted and Lewis acids, and their variations. It focuses on the principal methodologies for adjusting zeolite acidity, including isomorphous substitution ...
Shamzhy, Mariya, Gil, Barbara
openaire   +2 more sources

THE STUDY OF NICKEL-DEPOSITED USY ZEOLITES BY FMR

open access: yes, 1995
The nickel-deposited USY (ultrastable Y) zeolite samples were simulated by a method of impregnation with nickel naphthenate benzene solution followed by drying and calcination, Characterization of the Ni-impregnated USY zeolites was carried out by f.m.r,
ZHENG, LB, TAO, LX, ZHANG, FM, LI, DF
core  

The Use of Zeolites for VOCs Abatement by Combining Non-Thermal Plasma, Adsorption, and/or Catalysis: A Review

open access: yesCatalysts, 2019
Non-thermal plasma technique can be easily integrated with catalysis and adsorption for environmental applications such as volatile organic compound (VOC) abatement to overcome the shortcomings of individual techniques.
Savita K. P. Veerapandian   +4 more
semanticscholar   +1 more source

From double-four-ring germanosilicates to new zeolites : in silico investigation

open access: yes, 2014
The authors acknowledge financial support from the Grant Agency of the Czech Republic (Center of Excellence—P106/12/G015). R.E.M. thanks the Royal Society for provision of an industry fellowship and the E.P.S.R.C.
Bludský, Ota   +4 more
core   +1 more source

Spatial Evolution of Coke in ZSM‐5 Catalysts During Methanol‐to‐Hydrocarbons Conversion Revealed by In Situ X‐Ray Photoelectron Spectroscopy

open access: yesAngewandte Chemie International Edition, EarlyView.
Coking is the central source of deactivation of zeolite catalysts. Using in situ XPS along with complementary methods, we identify differences in the formation kinetics and composition of surface coke on industrially relevant ZSM‐5 catalysts during MTH conversion, demonstrating the strong potential of this technique for studying catalyst deactivation ...
Luca Artiglia   +6 more
wiley   +1 more source

Pyrolysis of palm oil using zeolite catalyst and characterization of the boil-oil

open access: yesGreen Processing and Synthesis, 2019
Pyrolysis of palm oil is one of the most potential methods to obtain bio-oil. In this study, pyrolysis of palm oil was carried out by using zeolites as a catalyst.
Abdullah   +6 more
doaj   +1 more source

Silver Nanoparticles Impregnated Zeolites Derived from Coal Fly Ash: Effect of the Silver Loading on Adsorption of Mercury (II)

open access: yesProceedings, 2018
Removal of mercury (II) from aqueous phase is of utmost importance, as it is highly toxic and hazardous to the environment and human health. A promising method for the removal of mercury (II) ions from aqueous solutions is by using adsorbents derived ...
Zhandos Tauanov   +2 more
doaj   +1 more source

The Role of Intraparticle Diffusion in Kinetic Model Discrimination: Proof of Concept Testing for Methanol Dehydration

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT The rate of a heterogeneous catalytic process may simultaneously be described by several rate equations. In this case, discrimination between the plausible kinetic models is required. An intrinsic kinetic model of a heterogeneous catalytic process may successively be discriminated by the transition from a reaction rate‐limited regime to an ...
Oleksii Zhokh   +2 more
wiley   +1 more source

Potential uses of natural zeolites for the development of new materials: short review

open access: yesMATEC Web of Conferences, 2016
Zeolites stand apart among the many families of porous materials. Due to their structure, they have a number of important practical properties such as a high adsorption capacity and the ability to cation exchange. However, the main feature distinguishing
Petranovskii V.   +4 more
doaj   +1 more source

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