Search Results - "Afonso, Julio C"

EVALUATION OF CRYOLITE FROM PITINGA (AMAZONAS-BRAZIL) AS A SOURCE OF HYDROGEN FLUORIDE by Paulino, Jéssica F., Neumann, Reiner, Afonso, Júlio C.

“…This paper reports the use of cryolite from the Pitinga Mine (Amazonas state, Brazil) as raw material in hydrogen fluoride production. Samples were initially…”
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Evaluation of solubility in simulated lung fluid of metals present in the slag from a metallurgical industry to produce metallic zinc by Lima, Rosilda M. G., Carneiro, Luana G., Afonso, Júlio C., Cunha, Kenya M. D.

“…The objective of this study was to determine the solubility parameters (rapid and slow dissolution rates, rapid and slow dissolution fractions) for nickel,…”
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OXIDATIVE CRACKING OF LINEAR HYDROCARBONS AT LOW TEMPERATURES by Câmara, Leôncio Diógenes T., Monteiro, Rafael S., Constantino, Alex M., Aranda, Donato A. G., Afonso, Júlio C.

“…This work describes the oxidative cracking of n-alkanes with molecular oxygen at low temperatures (below 473 K) in an autoclave reactor. An increase of the…”
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Adsorption of Calcium(II), Cadmium(II) and Copper(II) Ions from Water by Prepared Silicon-Aluminum-Zirconium Oxide Using Sol-Gel Process by da Silva, Cristiano, Prete, Maiyara, Tarley, César, Afonso, Júlio, Ribeiro, Emerson

“…Ternary oxide silica-alumina-zirconia (SiO2/Al2O3/ZrO2) obtained by the sol-gel process was applied as novel adsorbent of ions in aqueous solution. Batch…”
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Mild hydrocracking of an unstable feedstock in a three-phase fluidized-bed reactor: behavior of the process and of the chemical compounds by Souza, Guilherme L. M, Afonso, Julio C, Schmal, Martin, Cardoso, Jari N

“…The mild hydrocracking (400[degrees]C, 125 atm) of an unstable feedstock (shale oil) was performed in a three-phase fluidized-bed reactor with a commercial…”
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Electrooxidation of Phenol on a Ti/RuO2 anode: effect of some electrolysis parameters by Santos, Iranildes D. dos, Afonso, Júlio C, Dutra, Achilles J. B

“…The influences of electrolysis time, anodic area, current density and supporting electrolyte on phenol and its byproducts degradation on a Ti/RuO2 anode were…”
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Acidic oxygen compounds in the Irati shale oil by Afonso, Julio C, Schmal, Martin, Cardoso, Jari N

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Hydrotreatment of Irati shale oil: behavior of the aromatic fraction by Afonso, Julio C, Schmal, Martin, Cardoso, Jari N, Frety, Roger

“…This paper presents the chemical transformations that occur in the aromatic fraction of Irati shale oil under rather drastic hydrotreating conditions, at…”
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Hydrogenation of 2-ethyl-hexen-2-al on Ni/Al2O3 catalysts by Mattos, Arthur R.J.M., Probst, Sônia H., Afonso, Júlio C., Schmal, Martin

“…This work describes the hydrogenation of 2-ethyl-hexen-2-al in a slurry bed reactor in liquid phase on Ni/Al2O3 catalysts (4.4-17.0% wt Ni). XRD, DRS and TPR…”
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Regeneration of a Pt [formula omitted] catalyst: influence of heating rate, temperature and time of regeneration by Afonso, Júlio C., Aranda, Donato A.G., Schmal, Martin, Frety, Roger

“…We report in this work a study on the influence of heating rate (2–15 °C min −1), temperature (coke oxidation, 350–600 °C) and time (2–15 h) on the catalytic…”
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Recuperação de metais de catalisadores usados de hidrotratamento (NiMo E CoMo/AL2O3) by Afonso, Júlio C., Lajter, Karen, Góes, Ronny S.

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Recuperação de metais de catalisadores usados de hidrotratamento (NiMo E CoMo/AL2O3) Recovery of metals from spent hydrotreating catalysts (NiMo and CoMo/ Al2O3) by Júlio C. Afonso, Karen Lajter, Ronny S. Góes

“…This work presents a detailed study of the leaching behavior of deactivated hydrotreating catalysts (CoMo, NiMo/Al2O3) in presence of oxalate and NH4+ ions in…”
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Importance of pretreatment on regeneration of a Pt-Sn/Al 2O 3 catalyst by Afonso, Júlio C., Aranda, Donato A.G., Schmal, Martin, Frety, Roger

“…The influence of pretreatment (H 2, N 2, soxhlet extraction or none) on the generation of a Pt-Sn/Al 2O 3 catalyst was studied by means of evaluation of…”
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Importance of pretreatment on regeneration of a Pt-Sn/Al2O3 catalyst by AFONSO, J. C, ARANDA, D. A. G, SCHMAL, M, FRETY, R

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