Results 91 to 100 of about 98,475 (295)

Noble Metal Particles Confined in Zeolites: Synthesis, Characterization, and Applications

open access: yesAdvanced Science, 2019
Noble metal nanoparticles or subnanometric particles confined in zeolites, that is, metal@zeolite, represent an important type of functional materials with typical core–shell structure.
Yuchao Chai   +6 more
doaj   +1 more source

A New Source of Reaction - Diffusion Coupling in Confined Systems due to Temperature Inhomogeneity

open access: yes, 2002
Diffusion is often accompanied by a reaction or sorption which can induce temperature inhomogeneities. Monte Carlo simulations of Lennard-Jones atoms in zeolite NaCaA are reported with a hot zone presumed to be created by a reaction. Our simulations show
Ananthakrishna, G.   +2 more
core   +1 more source

Recent Advances and Challenges in Ammonia‐Hydrogen Energy Conversion

open access: yesAdvanced Science, EarlyView.
This work summarizes the latest progress of various catalytic methods in ammonia‐hydrogen energy conversion. The challenges and outlook of ammonia‐hydrogen energy conversion system are also emphasized. This work expects to build a blueprint of renewable and efficient ammonia‐hydrogen energy conversion systems under mild conditions.
Menghao Lv   +6 more
wiley   +1 more source

Zeolites in poultry and swine production

open access: yesCiência Rural
: Zeolites are minerals that have intriguing properties such as water absorption, ion adsorption and cation exchange capacity. There are approximately 80 species of natural zeolites recognized and hundreds of artificial zeolites, which have been ...
Aline Félix Schneider   +2 more
doaj   +1 more source

Encapsulation of Metal Nanoparticle Catalysts Within Mesoporous Zeolites and Their Enhanced Catalytic Performances: A Review

open access: yesFrontiers in Chemistry, 2018
Metal nanoparticles (NPs) exhibit desired activities in various catalytic reactions. However, the aggregation and sintering of metal NPs usually cause the loss of catalytic performance in practical reaction processes.
Dongdong Xu, Hao Lv, Ben Liu
doaj   +1 more source

Amorphization induced by pressure: results for zeolites and general implications [PDF]

open access: yes, 2006
We report an {\sl ab initio} study of pressure-induced amorphization (PIA) in zeolites, which are model systems for this phenomenon. We confirm the occurrence of low-density amorphous phases like the one reported by Greaves {\sl et al.} [Science {\bf 308}
G. T. Kerr   +5 more
core   +3 more sources

Magnetic field‐assisted concentration swing adsorption for CO2 capture over Fe3O4/fibrous nanosilica‐PEI adsorbent

open access: yesAIChE Journal, EarlyView.
Abstract Magnetic field‐assisted concentration swing adsorption (CSA) provides an electrification‐compatible alternative to conventional temperature swing adsorption (TSA) by enabling rapid heating/cooling and energy‐efficient regeneration under near‐isothermal conditions, thereby eliminating the need for sensible heat input.
Xiaohao Jia, Fateme Rezaei
wiley   +1 more source

Topology‐Aware Machine Learning for High‐Throughput Screening of MOFs in C8 Aromatic Separation

open access: yesAdvanced Intelligent Discovery, EarlyView.
We screened 15,335 Computation‐Ready, Experimental Metal–Organic Frameworks (CoRE‐MOFs) using a topology‐aware machine learning (ML) model that integrates structural, chemical, pore‐size, and topological descriptors. Top‐performing MOFs exhibit aromatic‐enriched cavities and open metal sites that enable π–π and C–H···π interactions, serving as ...
Yu Li, Honglin Li, Jialu Li, Wan‐Lu Li
wiley   +1 more source

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

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

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