Search Results - "BARTLEY, J. K"

Influence of Milling Media on the Physicochemicals and Catalytic Properties of Mechanochemical Treated Vanadium Phosphate Catalysts by Taufiq-Yap, Y. H, Goh, C. K, Hutchings, G. J, Dummer, N, Bartley, J. K

“…VOHPO₄·0.5H₂O synthesized via the alcohol reduction of VOPO₄·2H₂O was mechanochemical treated for 30 min in three different media, i.e. cyclohexane, ethanol…”
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Morphology of molar-tooth structures in Precambrian carbonates; influence of substrate rheology and implications for genesis by Pollock, Mark D, Kah, Linda C, Bartley, Julie K

“…Molar-tooth (MT) is an enigmatic carbonate fabric composed of variously shaped cracks and voids filled with a characteristically uniform, equant microspar. MT…”
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In Situ Investigation of the Nature of the Active Surface of a Vanadyl Pyrophosphate Catalyst during n-Butane Oxidation to Maleic Anhydride by Hävecker, M, Mayer, R. W, Knop-Gericke, A, Bluhm, H, Kleimenov, E, Liskowski, A, Su, D, Follath, R, Requejo, F. G, Ogletree, D. F, Salmeron, M, Lopez-Sanchez, J. A, Bartley, J. K, Hutchings, G. J, Schlögl, R

“…In situ X-ray absorption spectroscopy (XAS) and in situ X-ray photoelectron spectroscopy (XPS) have been applied to study the active surface of vanadium…”
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The crystal structure of ε-VOPO4 by GIRGSDIES, F, DONG, W.-S, BARTLEY, J. K, HUTCHINGS, G. J, SCHLÖGL, R, RESSLER, T

“…The crystal structure of epsilon-VOPO4 was determined in the space groupCc from X-ray powder diffraction data using a rigid body approach. The resulting…”
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XPS investigations of VPO catalysts under reaction conditions by Kleimenov, E., Bluhm, H., Hävecker, M., Knop-Gericke, A., Pestryakov, A., Teschner, D., Lopez-Sanchez, J.A., Bartley, J.K., Hutchings, G.J., Schlögl, R.

“…The surface of vanadium phosphorus oxide (VPO) catalysts was investigated by (in situ) X-ray photoelectron spectroscopy (XPS) under reaction conditions. Two…”
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Deep-water microbialites of the Mesoproterozoic Dismal Lakes Group: microbial growth, lithification, and implications for coniform stromatolites by Bartley, J. K., Kah, L. C., Frank, T. D., Lyons, T. W.

“…Offshore facies of the Mesoproterozoic Sulky Formation, Dismal Lakes Group, arctic Canada, preserve microbialites with unusual morphology. These microbialites…”
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The Effect of Cr, Ni, Fe, and Mn Dopants on the Performance of Hydrothermal Synthesized Vanadium Phosphate Catalysts for n-Butane Oxidation by Taufiq-Yap, Y. H., Theam, K. L., Hutchings, G. J., Dummer, N., Bartley, J. K.

“…Vanadium phosphorus oxide (VPO) catalysts synthesized via hydrothermal method were introduced with some different dopants, Cr, Ni, Fe, and Mn during the…”
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A Vendian-Cambrian boundary succession from the northwestern margin of the Siberian Platform: stratigraphy, palaeontology, chemostratigraphy and correlation by Bartley, J K, Pope, M, Knoll, A H, Semikhatov, M A, Petrov PYu

“…Siberia contains several key reference sections for studies of biological and environmental evolution across the Proterozoic-Phanerozoic transition. The…”
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Effects of mechanochemical treatment to the vanadium phosphate catalysts derived from VOPO4·2H2O by TAUFIQ-YAP, Y. H, GOH, C. K, HUTCHINGS, G. J, DUMMER, N, BARTLEY, J. K

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Testing the efficiency of rover science protocols for robotic sample selection: A GeoHeuristic Operational Strategies Test by Yingst, R.A., Bartley, J.K., Chidsey, T.C., Cohen, B.A., Gilleaudeau, G.J., Hynek, B.M., Kah, L.C., Minitti, M.E., Williams, R.M.E., Black, S., Gemperline, J., Schaufler, R., Thomas, R.J.

“…The GHOST field tests are designed to isolate and test science-driven rover operations protocols, to determine best practices. During a recent field test at a…”
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Effect of tellurium promoter on vanadium phosphate catalyst for partial oxidation of n-butane by Taufiq-Yap, Y.H., Asrina, S. Nor, Hutchings, G.J., Dummer, N.F., Bartley, J.K.

“…Te-promoted （1%） vanadium phosphate catalyst （VPDTe） was prepared via VOPO4·2H2O by calcining its precursor VOHPO4·0.5H2O in a flow of n-butane/air.VPDTe…”
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C-and Sr-isotope chemostratigraphy as a tool for verifying age of Riphean deposits in the Kama-Belaya aulacogen, the east European platform by Kah, L. C., Crawford, D. C., Bartley, J. K., Kozlov, V. I., Sergeeva, N. D., Puchkov, V. N.

“…The Kyrpy Group of the East European platform is regarded by tradition as correlative with the Lower Riphean Burzyan Group of the Bashkirian meganticlinorium…”
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Oxygenation of the mid-Proterozoic atmosphere: clues from chromium isotopes in carbonates by Gilleaudeau, G.J., Frei, R., Kaufman, A.J., Kah, L.C., Azmy, K., Bartley, J.K., Chernyavskiy, P., Knoll, A.H.

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Molar tooth structures in calcareous nodules, early Neoproterozoic Burovaya Formation, Turukhansk region, Siberia by Pope, Michael C., Bartley, Julie K., Knoll, Andrew H., Petrov, Peter Yu

“…Molar tooth structures are abundant in large (1–2 m diameter) carbonate nodules within fine-grained, subtidal carbonates of the early Neoproterozoic (lower…”
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MICROBIALITES IN A HIGH-ALTITUDE ANDEAN LAKE: MULTIPLE CONTROLS ON CARBONATE PRECIPITATION AND LAMINA ACCRETION by GOMEZ, FERNANDO J, KAH, LINDA C, BARTLEY, JULIE K, ASTINI, RICARDO A

“…Microbialites comprise the mineralized record of early life on Earth and preserve a spectrum of fabrics that reflect complex physical, chemical, and biological…”
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Carbon isotope chemostratigraphy of the Middle Riphean type section (Avzyan Formation, Southern Urals, Russia): Signal recovery in a fold-and-thrust belt by Bartley, Julie K., Kah, Linda C., McWilliams, Julie L., Stagner, Alice F.

“…The Avzyan Formation of the southern Ural Mountains, Russia, forms part of the Middle Riphean (∼ 1300–1000 Ma) type section. Its age is constrained to be…”
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Vanadium Phosphate Materials as Selective Oxidation Catalysts by Dummer, N.F., Bartley, J.K., Hutchings, G.J.

“…Vanadium phosphates have been established as selective hydrocarbon oxidation catalysts for more than 40 years. Their primary use commercially has been in the…”
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Liaisons of Life, from Hornworts to Hippos, How the Unassuming Microbe has Driven Evolution by BARTLEY, J. K.

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Special Issue on Neoproterozoic–Paleozoic Ocean Chemistry by Pope, Michael C., Algeo, Thomas J., Saltzman, Matt, Bartley, Julie K.

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Rodinia and the Mesoproterozoic earth–ocean system by Kah, Linda C., Bartley, Julie K.

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