Zobrazeno 1 - 7
of 7
pro vyhledávání: '"Struan D. Robertson"'
Publikováno v:
Fuel. 59:826-830
Analysis of the standard method for measuring Hardgrove grindability indices has led to the conclusion that a valid figure for reproducibility cannot be established without further definition of the calibration process. Ignoring any possible systemat
Autor:
R.A. Wind, M.J. Duijvestijn, Struan D. Robertson, R.B. Jones, A.D.H. Clague, C. van der Lugt, J. Vriend, J. Smidt
Publikováno v:
Fuel. 65:520-525
A novel n.m.r. method for determining the aromaticity of coal has been evaluated. Polarization transfer from the paramagnetic electrons is used to enhance the intensity of the 13 C n.m.r. spectrum. Analysis of five samples of Gondwana bituminous stea
Publikováno v:
Fuel. 62:1046-1052
Neutron (NAA) and photon (PAA) activation analysis have been applied to several coal quality activities of Shell. NAA has revealed marked variations in the sodium content of low rank coals in an Indonesian area. NAA/acid extraction correlation studie
Publikováno v:
Fuel. 58:770-774
Low-resolution proton nuclear magnetic resonance spectroscopy is a rapid and accurate technique for measuring moisture in coal and total solids in aqueous coal slurries. The adverse effects of ferromagnetic materials, such as magnetite, have been cat
Publikováno v:
Journal of Catalysis. 41:405-411
The course of Raney nickel activation from nickel-aluminum alloys of 50 and 42 wt% of nickel (termed as alloy A and B, respectively) was followed by the controlled oxidation of aluminum in dilute aqueous NaOH at 50 °C. The crystalline intermetallic
Publikováno v:
Fuel. 65:1546-1551
The non-isothermal oxidation of coal chars was investigated by conventional thermogravimetric analysis (t.g.a.) over the temperature range 450–650 °C. For chars, produced by flame pyrolysis of pulverized low rank bituminous coals, three different
Autor:
Struan D. Robertson
Publikováno v:
Carbon. 8:365-374
The structure of carbon deposited on metal substrates has been studied by thermally decomposing methane over iron, cobalt and nickel surfaces. Methane decomposition temperatures were 650°C and 750°C in the case of iron and 750°C for cobalt and nic