Search Results - "Herod, A.A"

Estimating molecular masses of petroleum-derived fractions: High mass (>2000 u) materials in maltenes and asphaltenes from Maya crude oil by Morgan, T.J., George, A., Alvarez-Rodriguez, P., Millan, M., Herod, A.A., Kandiyoti, R.

“…Molecular mass ranges and average masses of fractions from a heavy Mexican crude oil (Maya) have been studied, using mainly size exclusion chromatography (SEC)…”
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Trace element analysis of gasification plant samples by i.c.p.–m.s.: validation by comparison of results from two laboratories by Richaud, R., Lachas, H., Healey, A.E., Reed, G.P., Haines, J., Jarvis, K.E., Herod, A.A., Dugwell, D.R., Kandiyoti, R.

“…In the absence of either standard methods for trace element analysis of coal-derived chars and ash or standard reference materials for coal gasification…”
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Examination of soil contaminated by coal-liquids by size exclusion chromatography in 1-methyl-2-pyrrolidinone solution to evaluate interference from humic and fulvic acids and extracts from peat by Morgan, T.J., Herod, A.A., Brain, S.A., Chambers, F.M., Kandiyoti, R.

“…Soil from a redundant coke oven site has been examined by extraction of soluble materials using 1-methyl-2-pyrrolidinone (NMP) followed by size exclusion…”
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Catalytic hydrocracking of primary maceral concentrate extracts prepared in a flowing solvent reactor by Begon, V., Suelves, I., Li, W., Lazaro, M.-J., Herod, A.A., Kandiyoti, R.

“…Differences between the behaviour of coal macerals during liquefaction and catalytic hydrocracking were investigated. The liquefaction experiments were carried…”
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Metal-ion pillared clays as hydrocracking catalysts (II): effect of contact time on products from coal extracts and petroleum distillation residues by Bodman, S.D, McWhinnie, W.R, Begon, V, Millan, M, Suelves, I, Lazaro, M.-J, Herod, A.A, Kandiyoti, R

“…Novel catalysts have been prepared, based on montmorillonite (a natural clay) and laponite (a synthetic clay) pillared with tin, chromium and aluminium pillars…”
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Hydropyrolysis of sugar cane bagasse: effect of sample configuration on bio-oil yields and structures from two bench-scale reactors by Pindoria, R.V., Chatzakis, I.N., Lim, J.-Y., Herod, A.A., Dugwell, D.R., Kandiyoti, R.

“…A wire-mesh reactor, with the capability of virtually eliminating secondary reactions, has been used as base-case in the study of product yields and structures…”
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Changes in sample reactivity and catalyst deactivation during early stages of the hydrocracking of a coal extract by Begon, V., Megaritis, A., Lazaro, M.-J., Herod, A.A., Dugwell, D.R., Kandiyoti, R.

“…Changes in sample reactivity and catalyst deactivation during the early stages of the hydrocracking of coal liquefaction extracts, using presulphided supported…”
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Characterization of Molecular Mass Ranges of Two Coal Tar Distillate Fractions (Creosote and Anthracene Oils) and Aromatic Standards by LD-MS, GC-MS, Probe-MS and Size-exclusion Chromatography by Morgan, T. J, George, A, Álvarez, P, Millan, M, Herod, A. A, Kandiyoti, R

“…Laser-desorption mass spectrometry (LD-MS) method development was undertaken to improve estimates of mass ranges for complex hydrocarbon mixtures. A creosote…”
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The Calibration of Size Exclusion Chromatography Columns:  Molecular Mass Distributions of Heavy Hydrocarbon Liquids by Karaca, Fatma, Islas, Carlos A, Millan, Marcos, Behrouzi, Mahtab, Morgan, Trevor J, Herod, Alan A, Kandiyoti, R

“…The aim of the study was to obtain calibration curves for a pair of size exclusion chromatography (SEC) columns operating with 1-methyl-2-pyrrolidinone (NMP)…”
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Comment on ‘Molecular size and weight of asphaltene and asphaltene solubility fractions from coals, crude oils and bitumen’ by S. Badre, C.C. Goncalves, K. Norinaga, G. Gustavson and O.C. Mullins; Fuel 85 (2006) 1–11 by Herod, A.A., Kandiyoti, R., Bartle, K.D.

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The characterisation of tars produced during the gasification of sewage sludge in a spouted bed reactor by Adegoroye, A, Paterson, N, Li, X, Morgan, T, Herod, A.A, Dugwell, D.R, Kandiyoti, R

“…Tars released by the gasification of sewage sludge in a spouted bed gasifier have been collected, quantified and characterised. The amounts collected were low…”
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Characterization and Pyrolysis Behavior of Novel Anthracene Oil Derivatives by Álvarez, P, Granda, M, Sutil, J, Menendez, R, Fernández, J. J, Viña, J. A, Morgan, T. J, Millan, M, Herod, A. A, Kandiyoti, R

“…The characterization and pyrolysis behavior of a set of pitches prepared from anthracene oil have been described. The pitches were obtained from four…”
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Comparison of trace element contents in low-temperature and high-temperature ash from coals and biomass by Richaud, R, Herod, A.A, Kandiyoti, R

“…Four coal samples and three biomass samples have been ashed by low-temperature (LTA) and high-temperature (HTA) methods and a range of trace elements have been…”
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A two-stage fixed-bed reactor for direct hydrotreatment of volatiles from the hydropyrolysis of biomass: effect of catalyst temperature, pressure and catalyst ageing time on product characteristics by Pindoria, R.V, Megaritis, A, Herod, A.A, Kandiyoti, R

“…This investigation involved the hydropyrolysis of biomass ( eucalyptus globulus) and the immediate catalytic hydrocracking of pyrolytic oils in the second…”
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The characterisation of tar from the pyrolysis of animal bones by Purevsuren, B, Avid, B, Gerelmaa, T, Davaajav, Ya, Morgan, T.J, Herod, A.A, Kandiyoti, R

“…This report outlines results of an investigation of the composition of bone pyrolysis tar produced in Mongolia. The liquid product (tar) yield was low: ∼4.9%…”
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Heat treatment of medium-temperature Sasol–Lurgi gasifier coal-tar pitch for polymerizing to higher value products by Mokoena, K., Van der Walt, T.J., Morgan, T.J., Herod, A.A., Kandiyoti, R.

“…Two coal-derived pitch samples, one a medium temperature pitch from a Sasol–Lurgi gasifier and the other from a high temperature coking process, have been heat…”
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Thin-layer chromatography of pitch and a petroleum vacuum residue: Relation between mobility and molecular size shown by size-exclusion chromatography by Li, W., Morgan, T.J., Herod, A.A., Kandiyoti, R.

“…A coal tar pitch and a petroleum vacuum residue have been separated by TLC using pyridine, acetonitrile, toluene and pentane to develop the chromatograms. The…”
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Thin-layer chromatography of pitch and a petroleum vacuum residue by Li, W., Morgan, T.J., Herod, A.A., Kandiyoti, R.

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The effect of thermal treatment on the compositional structure of humic acids extracted from South African bituminous coal by Skhonde, M.P., Herod, A.A., van der Walt, T.J., Tsatsi, W.L., Mokoena, K.

“…The study was carried out to investigate the effect of thermal exposure on the chemical structure of humic acids with emphasis on the acidic functional groups…”
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Molecular mass distributions and structural characterisation of coal derived liquids by HEROD, A. A, LAZARO, M.-J, DOMIN, M, ISLAS, C. A, KANDIYOTI, R

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