Results 31 to 40 of about 82,764 (294)

Oxygen reduction in acid media: influence of the activity of CoNPc(1,2) bilayer deposits in relation to their attachment to the carbon black support and role of surface groups as a function of heat treatment [PDF]

open access: yes, 1994
O2 reduction was investigated using rotating disk electrode and voltammetry techniques on NPcCo(1,2) impregnations deposited onto two kinds of carbon black support.
Biloul, A.   +6 more
core   +2 more sources

Highly active cationic cobalt(II) hydroformylation catalysts

open access: yesScience, 2020
Charging up cobalt for hydroformylation Hydroformylation reactions are applied at massive scale in the chemical industry to transform olefins into aldehydes. The original catalysts were neutral cobalt complexes. Hood et al.
Drew M. Hood   +5 more
openaire   +3 more sources

Synthesis and Characterization of Co/Ni/CoNi-ZSM-5 Catalyst for Hydrogen Production

open access: yesMATEC Web of Conferences, 2018
Nickel is commonly used as a catalyst in hydrogen production. However, the use of nickel catalysts in the steam reforming process has the disadvantage of coke formation and high cost.
Widayat Widayat   +3 more
doaj   +1 more source

Cobalt-immobilized carbon-based nano-catalyst for CN cross coupling reaction

open access: yesResults in Chemistry, 2022
CN cross coupling reaction is very important in synthesis of pharmaceuticals, natural products, agrochemicals, fine chemicals and functional materials. Traditionally, palladium or copper metals are used for CN coupling reaction.
Shubham R. Bankar   +2 more
doaj   +1 more source

Polyyne Ring Nucleus Growth Model for Single-Layer Carbon Nanotubes [PDF]

open access: yes, 1996
We propose, based on recent experimental results, a polyyne ring nucleus (PRN) growth model for the synthesis of single-layer nanotubes (SLN's). The PRN model assumes that (i) the critical nuclei are the planar carbon polyyne rings that are observed to ...
Goddard, William A, III   +1 more
core   +2 more sources

Biphenyl-bridged 6-(1-aryliminoethyl)-2-iminopyridyl-cobalt complexes: synthesis, characterization and ethylene polymerization behavior [PDF]

open access: yes, 2014
A series of biphenyl-bridged 6-(1-aryliminoethyl)-2-iminopyridine derivatives reacted with cobalt dichloride in dichloromethane/ethanol to afford the corresponding binuclear cobalt complexes.
Du, Shizhen   +6 more
core   +2 more sources

Cobalt-Porphyrin Catalyzed Electrochemical Reduction of Carbon Dioxide in Water II: Mechanism from First Principles

open access: yes, 2010
We apply first principles computational techniques to analyze the two-electron, multi-step, electrochemical reduction of CO2 to CO in water using cobalt porphyrin as a catalyst.
Leung, Kevin   +4 more
core   +1 more source

Catalytic Conversion of Methane and Carbon Dioxide (Greenhouse Gases) into Syngas over Samarium-Cobalt-Trioxides Perovskite Catalyst [PDF]

open access: yes, 2017
The catalytic behaviour of samarium-cobalt-trioxides perovskite catalyst was investigated for the mitigation of greenhouse gases (carbon dioxide and methane) to provide cleaner energy (hydrogen and carbon monoxide) and environment.
Cheng, C. K., Osazuwa, Osarieme U.
core   +1 more source

Influences of Different Preparation Conditions on Catalytic Activity of Ag2O-Co3O4/γ-Al2O3 for Hydrogenation of Coal Pyrolysis

open access: yesJournal of Spectroscopy, 2014
A series of catalysts of Ag2O-Co3O4/γ-Al2O3 was prepared by equivalent volume impregnation method. The effects of the metal loading, calcination time, and calcination temperatures of Ag and Co, respectively, on the catalytic activity were investigated ...
Lei Zhang   +5 more
doaj   +1 more source

Macrocyclic cyanocobalamin (vitamin B12) as a homogeneous electrocatalyst for water oxidation under neutral conditions

open access: yes, 2020
Highly water-soluble cyanocobalamin (also known as vitamin B-12) is the most structurally macrocyclic complex comprising cobalt in the center of a corrin ring.
Ahmad, Nazir   +5 more
core   +1 more source

Home - About - Disclaimer - Privacy