Results 31 to 40 of about 1,610,133 (340)

Large scale production of multi-walled carbon nanotubes by fluidized bed catalytic chemical vapor deposition : a parametric study [PDF]

open access: yes, 2007
A parametric study investigating the impact of temperature, run duration, total pressure, and composition of the gaseous phase on the catalytic growth of multi-walled carbon nanotubes (MWNT) has been performed.
Bernard, Daniel   +7 more
core   +2 more sources

Thermodynamic principle to enhance enzymatic activity using the substrate affinity

open access: yesNature Communications, 2023
Understanding how to tune enzymatic activity is important not only for biotechnological applications, but also to elucidate the basic principles guiding the design and optimization of biological systems in nature.
Hideshi Ooka   +2 more
doaj   +1 more source

Recycling Of Carbone Oxides (Co, Co2) Conversion Into Methanol At Atmospheric Pressure Over Mechanochemical Achtivated Cuo-zno-al2o3 Catalyst [PDF]

open access: yes, 2016
The catalytic process for methanol production by synthesis gas conversion under the conditions of mechanochemical activation (MCA) of copper-zinc-aluminum oxide catalyst in the temperature range 160–280 °C at a pressure of 0.1 MPa are investigated.
Khimach, N. (Nataliia)   +2 more
core   +2 more sources

The Cyclone As Catalyst

open access: yeseTropic: electronic journal of studies in the Tropics, 2016
Cyclones are endured, but often dreaded in tropical regions such as Far North Queensland. Memories, and often myth, of their destructive effects permeate written, visual and spoken text from and about this area. This paper presents findings from a qualitative research project which examined the impact of tropical north Queensland’s 2006 Cyclone Larry ...
Haring, Ute, Sorin, Reesa
openaire   +5 more sources

Selective hydrogenation in trickle-bed reactor. Experimental and modelling including partial wetting. [PDF]

open access: yes, 2003
A steady state model of a trickle bed reactor is developed for the consecutive hydrogenation of 1,5,9-cyclododecatriene on a Pd/Al2O3 catalyst. Various experiments have shown that the selectivity of this reaction towards the product of interest is much ...
Delmas, Henri   +3 more
core   +2 more sources

Integration as a catalyst for assimilation [PDF]

open access: yesInternational Review of Economics & Finance, 2013
We draw a distinction between the social integration and economic assimilation of migrants, and study an interaction between the two. We define social integration as blending into the host country’s society, and economic assimilation as acquisition of human capital that is specific to the host country’s labor market.
Stark, Oded   +3 more
openaire   +8 more sources

Characterization of a new iron-on-zeolite Y Fischer-Tropsch catalyst [PDF]

open access: yes, 1986
Iron pentacarbonyl adsorbed on dry Na-Y zeolite can be oxidized at subambient temperatures into Fe203 located in the zeolite supercages (catalyst I). When catalyst I is hydrogen reduced at 575 K most of the iron has agglomerated externally to the zeolite
Bein, Thomas   +2 more
core   +2 more sources

Diffusion and catalyst efficiency in hierarchical zeolite catalysts

open access: yesNational Science Review, 2020
Abstract The preparation of hierarchical zeolites with reduced diffusion limitation and enhanced catalyst efficiency has become a vital focus in the field of zeolites and porous materials chemistry within the past decades. This review will focus on the diffusion and catalyst efficiency of hierarchical zeolites and industrial catalysts ...
Zifeng Yan   +5 more
openaire   +4 more sources

Effect of Temperature, Pressure, and Reaction Time on Hydrogenation of Hexadecanoic Acid to 1-Hexadecanol Using a Ru-Sn(3.0)/C Catalyst

open access: yesJurnal Kimia Sains dan Aplikasi, 2019
Effect of temperature, initial H2 pressure, and reaction time on the selective hydrogenation of hexadecanoate acid to 1-hexadecanol over bimetallic ruthenium-tin supported on carbon (denoted as Ru-Sn(3.0)/C; 3.0 is molar ratio Ru/Sn) has been ...
Nor Ain   +2 more
doaj   +1 more source

Structural behaviour of copper chloride catalysts during the chlorination of CO to phosgene [PDF]

open access: yes, 2018
The interaction of CO with an attapulgite-supported Cu(II)Cl2 catalyst has been examined in a micro-reactor arrangement. CO exposure to the dried, as-received catalyst at elevated temperatures leads to the formation of CO2 as the only identifiable ...
Callison, June   +8 more
core   +2 more sources

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