Results 41 to 50 of about 2,245 (216)
Role of Lewis centres on ethanol dehydrogenation over the Cu‐Cr/γ‐Al2O3 system
The Canadian Journal of Chemical Engineering, EarlyView.Cu–Cr interactions on alumina enhance Lewis acid site density, boosting selectivity towards ethanol dehydrogenation products. Soft coke formation on copper and Cu–Cr sites drives deactivation, shifting the reaction towards unwanted dehydration products.
Sakun Preedavijitkul +7 more
wiley +1 more source
Tree‐Chromatic Number Is Not Equal to Path‐Chromatic Number* [PDF]
Journal of Graph Theory, 2017 AbstractFor a graph G and a tree‐decomposition of G, the chromatic number of is the maximum of , taken over all bags . The tree‐chromatic number of G is the minimum chromatic number of all tree‐decompositions of G. The path‐chromatic number of G is defined analogously.
Tony Huynh, Ringi Kim
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CrystalsChromium (Cr) is a vital metal utilized in materials physics, healthcare, and various other domains. In this study, we propose an eco-friendly method for separating Cr from potassium chromate (K2CrO4) based on photon–phonon resonance absorption theory ...
Mingyan Xie +7 more
doaj +1 more source
Deep Underground Science and Engineering, EarlyView.This study presents a sustainable smart‐coating strategy for protecting underground steel infrastructures from chloride‐induced corrosion. Zinc‐aluminum layered double hydroxides (LDHs) and tannin‐loaded LDHs (LDH–TA) were incorporated into an epoxy matrix to provide both enhanced barrier properties and active, pH‐responsive inhibition.
Veerle Vandeginste +3 more
wiley +1 more source
Journal of Histochemistry & Cytochemistry, 1954 Controlled chromation represents another step in the development of dichromate oxidation as a cytochemical technique, to which previous contributions have been made by Weigert, Smith, Dietrich, Ciaccio and Baker. Recognition of the critical importance of controlling pH, in addition to the regulation of temperature, time, and concentration, allows ...
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Sur les rapports géométriques qui existent entre plusieurs chromates alcalins
, 1880 Wyrouboff Grégoire Nicolaevitch. Sur les rapports géométriques qui existent entre plusieurs chromates alcalins. In: Bulletin de la Société minéralogique de France, volume 3, 6, 1880. pp.
Wyrouboff, Grégoire Nicolaevitch
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EcoEnergy, EarlyView.This review systematically examines how different transition metal compounds—such as binary and multinary metal oxides, halides, sulfides, and salts—exhibit thermochromism based on the d‐electron configurations of their transition metal cations. It focuses on three main mechanisms of thermochromism: phase transition, charge transfer, and bandgap change.
Jie Wang +5 more
wiley +1 more source
Chromatic correlation clustering [PDF]
Proceedings of the 18th ACM SIGKDD international conference on Knowledge discovery and data mining, 2012 We study a novel clustering problem in which the pairwise relations between objects are categorical. This problem can be viewed as clustering the vertices of a graph whose edges are of different types (colors). We introduce an objective function that aims at partitioning the graph such that the edges within each cluster have, as much as possible, the ...
Bonchi F, Gionis A, Gullo F, Ukkonen A
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Extinction Coefficients of the Mixtures of Chromates and Dichromates. [PDF]
, 1929 It deals wth the Extinction Coefficients of the Mixtures of Chromates and Dichromates ...
Paranjpe, GR, Tawde, NR
core
Plant extracts as green corrosion inhibitors for different kinds of steel: A review
HeliyonCorrosion significantly threatens the structural integrity of steel-based constructions like buildings and industrial units. Traditional corrosion inhibitors, such as chromates, are associated with environmental and health risks.
Bhoomika R. Holla +3 more
doaj +1 more source