Results 91 to 100 of about 191,930 (359)

Treatment of Pesticides in Wastewater by Heterogeneous and Homogeneous Photocatalysis

open access: yesInternational Journal of Photoenergy, 2012
The effect of different heterogeneous and homogeneous photocatalytic systems on the oxidative degradation of mepiquat chloride in aqueous solutions was investigated.
Catalina Daniela Stan   +4 more
doaj   +1 more source

Application of homogeneously precipitated nanosized Fe-doped alumina powders to carbon nanotube growth. [PDF]

open access: yes, 2010
Homogeneous precipitation of hydroxides was investigated as an alternative method to synthesize Fe-doped aluminum oxide (α-Al2−2xFe2xO3) particles over which carbon nanotubes (CNTs) were grown via a catalytic chemical vapor deposition (CCVD) method ...
Alvarez   +23 more
core   +2 more sources

High‐Concentration Mesogen‐Assisted Exfoliation of Low‐Dimensional Nanomaterials for Achieving Ultralow‐Temperature Actuations of Liquid Crystal Elastomers

open access: yesAdvanced Functional Materials, EarlyView.
Most matter is nominally frozen in the polar regions or space, and liquid crystal materials are no exception. Consequently, soft actuators, including liquid crystal elastomers (LCEs), are inoperative under such extreme cold in response to stimuli, as their motion relies on mechanical deformation.
Hyeonseong Kim   +5 more
wiley   +1 more source

Application of a Taylor-Couette Reactor in Homogeneous Catalysis

open access: yesChemical Engineering Transactions, 2015
New developments of synthesis routes in homogeneous catalysis often require a precise control of the reaction conditions in order to achieve optimal results.
A. Behr, T. Farber
doaj   +1 more source

Oxidative aromatization of olefins with dioxygen catalyzed by palladium trifluoroacetate [PDF]

open access: yes, 2008
Molecular oxygen can replace sacrificial olefins as the hydrogen acceptor in the palladium trifluoroacetate catalyzed dehydrogenation of cyclohexene and related cyclic olefins into aromatics.
Bercaw, John E.   +2 more
core  

Exploiting the Functionality of Cerium Oxide‐Modified Carbon Nanohorns Catalysts Toward Enhanced CO2 Reduction Performance

open access: yesAdvanced Functional Materials, EarlyView.
A cerium oxide‐carbon nanohybrid catalyst is synthesized via two distinct routes and is integrated into H‐type cells and gas diffusion layers (GDLs) to enhance electrochemical performance. Structural variations significantly affect performance, with the solvothermal sample exhibiting higher current densities.
Alessia Pollice   +9 more
wiley   +1 more source

Heterogenised Homogeneous Catalyst

open access: yesPlatinum Metals Review, 1977
Heterogeneous versions of homogeneous catalysts can often be produced and may have certain advantages in use particularly on a commercial scale. The catalytic chemistry of supported rhodium compounds for the carbonylation of methanol is described and the behaviour of heterogeneous and homogeneous operation compared in order to illustrate the relations ...
openaire   +1 more source

ECUT: Energy Conversion and Utilization Technologies program. Heterogeneous catalysis modeling program concept [PDF]

open access: yes
Insufficient theoretical definition of heterogeneous catalysts is the major difficulty confronting industrial suppliers who seek catalyst systems which are more active, selective, and stable than those currently available.
Voecks, G. E.
core   +1 more source

Cryo‐EM of Rationally Designed Photosystem I Nanoassembly on Graphene Validates Orientation‐Driven Enhancement of Photocatalytic Performance

open access: yesAdvanced Functional Materials, EarlyView.
The first cryo‐EM visualization and quantification of oriented Photosystem I (PSI) on single‐layer graphene is reported. Domain‐specific covalent anchoring of PSI, with the reducing side of the biophotocatalyst toward graphene, promotes three‐fold higher anodic photocurrent generation compared to a randomly physisorbed counterpart. This approach allows
Miriam Izzo   +6 more
wiley   +1 more source

Optimization of Biodiesel Production Process from Restaurant Waste Frying Oils in the Presence of Homogeneous Catalyst

open access: yesMuhandisī-i Bihdāsht-i Muḥīṭ, 2019
Background and Objective: Because of the importance of the role of energy in the world and nonrenewability of fossil fuels and caused environmental issues by these fuels in recent years, many studies have been conducted to find an appropriate alternative
Nadali Alavi   +3 more
doaj  

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