Results 101 to 110 of about 3,494,768 (298)

Hydroprocessing of synthetic kerosene over a non‐sulphided Ni/Al2O3 catalyst: Impact of alcohols and ketones on alkene conversion

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract Synthetic jet fuel containing non‐petroleum‐derived kerosene can be produced from synthetic kerosene obtained through processes that include a hydroprocessing step. The potential use of non‐sulphided (reduced) nickel supported on alumina (Ni/Al2O3) was evaluated as an alternative to sulphided catalysts to saturate alkenes in sulphur‐free ...
Garima Chauhan, Felix Link, Cibele Melo Halmenschlager, Arno de Klerk   +3 more
wiley   +1 more source

Integrated X-ray fluorescence and diffuse visible-to-near-infrared reflectance scanner for standoff elemental and molecular spectroscopic imaging of paints and works on paper

Heritage Science, 2018
Prior studies have shown the improved ability to identify artists’ pigments by combining results from X-ray fluorescence (XRF), which provides elemental information, with reflectance spectroscopy in the visible to near infrared (400–1000 nm) that ...
John K. Delaney, Damon M. Conover, Kathryn A. Dooley, Lisha Glinsman, Koen Janssens, Murray Loew   +5 more
doaj   +1 more source

Conférence internationale MA-XRF 2026

Conférence internationale MA-XRF 2026 – MA-XRF and Combined Imaging Techniques in Heritage Science → 29 septembre-2 octobre 2026  |  Paris ♦ Appel à contribution deadline 3 avril 2026 La prochaine conférence MA_XRF 2026 vise à réunir des chercheur.es intéressé.es par la MA-XRF et les techniques d’imagerie complémentaires pour l’étude du patrimoine ...
openaire   +2 more sources

VisuaLayered: Combined Visual Analysis of MA-XRF and RIS Data

, 2022
In this work, we present VisuaLayered, the implementation of a combined analysis workflow for pigment identification. VisuaLayered is an integrated, interactive system that focuses on the combined visual analysis of Macro X-Ray Fluorescence (MA-XRF) and ...
Popa, Andra (author)
core  

A study of Ni‐Co/CeO2 catalyst derived from metal–organic framework for dry reforming of methane

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract The efficacy of cobalt‐doped, MOF‐derived catalysts for dry reforming of methane (DRM) was examined. The focus was on the influence of varying nickel and cobalt molar ratios on catalytic performance. Three catalysts with Ni:Co ratios of 1:1, 1:0.5, and 0.5:1, were synthesized and tested with cerium oxide as a constant support. The DRM reaction
Ruth D. Alli, Nader Mahinpey
wiley   +1 more source

Precipitation of niobic acid from potassium niobate in sulphuric acid solution: A route to niobium oxide

The Canadian Journal of Chemical Engineering, EarlyView.
Graphical abstract illustrating the niobic acid precipitation process applied and the product obtained. Abstract This study investigates the precipitation of niobic acid (Nb2O5.nH2O) from potassium niobate solution with addition of sulphuric acid, and its subsequent thermal conversion into niobium oxide (Nb2O5). Thermodynamic modelling with PHREEQC and
Cássia R. Souza, Gabriela C. Silva, Isabel P. Silva, Frederico M. Penha, Sônia D. F. Rocha   +4 more
wiley   +1 more source

Seeking the Unseen: A Multimodal Non-Invasive Investigation of a Post-Byzantine Overpainted Icon

Heritage
Religious panel paintings (icons) play a pivotal role in the rituals of the Eastern Orthodox Christian Church. However, their continuous use often results in physical degradation, prompting remedial interventions. Quite commonly, alterations were treated
Nikoleta V. Nikolaidou, Anastasios Asvestas, Agathi Anthoula Kaminari, Theodoros Panou, Andreas Sampatakos, Dimitrios F. Anagnostopoulos, Athina Georgia Alexopoulou, Georgios P. Mastrotheodoros   +7 more
doaj   +1 more source

Natural South African iron‐rich sand as a functional catalyst in hybrid photocatalytic wet peroxide oxidation technology for the degradation of methyl orange dye pollutant

The Canadian Journal of Chemical Engineering, EarlyView.
This research explored South African iron‐rich sand (SAIRS) as a natural catalyst for light‐mediated wet peroxide oxidation of methyl orange dye in wastewater and at an optimized of conditions of 3500 mg/L catalyst dose, 6 mM H2O2, and pH 2.5, SAIRS achieved 94% methyl orange degradation within 90 min under visible light.
Aaliyah Ebrahim, Stephen Sunday Emmanuel, Alicia Levana Dorling, Shepherd M. Tichapondwa   +3 more
wiley   +1 more source

Revealing Gauguin’s practice: multi-analytical approach of the Portrait de Suzanne Bambridge

Heritage Science, 2018
The Portrait de Suzanne Bambridge (1891) is the first oil painting executed by Paul Gauguin (1848–1903) in Tahiti. A comprehensive material study of the painting by means of MA-XRF, Raman and FT-IR techniques has been conducted to understand Gauguin’s ...
C. Defeyt, E. Van Vyve, F. Leen, F. Vandepitte, B. Gilbert, E. Herens, D. Strivay   +6 more
doaj   +1 more source

Green and sustainable synthesis of magnetite from copper slag via citrate complexation for methylene blue dye removal from water

The Canadian Journal of Chemical Engineering, EarlyView.
Abstract This study proposes a novel, green, and sustainable method for synthesizing magnetic iron oxides from metallurgical copper slag (CS), leveraging its iron content as a valuable resource. Iron was extracted via acid leaching using edible citric acid (ECA), forming a citrate–iron complex (CSL), which was subsequently thermally decomposed at 300°C
Melisa Portilla‐Sangabriel, Karen Valencia García, Tania‐Ariadna García‐Mejía, Agileo Hernández‐Gordillo, Rosa‐María Ramírez‐Zamora   +4 more
wiley   +1 more source