Topic
Calcium oxide
About: Calcium oxide is a research topic. Over the lifetime, 7600 publications have been published within this topic receiving 66104 citations. The topic is also known as: caustic lime & quicklime.
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TL;DR: In this paper, the phase composition and properties of the fractured surfaces of the isostatically re-pressed sinters were determined, i.e., density, shrinkage, hardness, bending strength, and roughness.
Abstract: Depending on the calcium:phosphorus molar ratio of the initial precipitates determined by precipitation conditions (calcium:phosphorus molar ratio of reactants and pH of reaction environment), after sintering at 1250°C, monophase, biphase, or triphase ceramics consisting of hydroxyapatite, β-tricalcium phosphate, α-tricalcium phosphate, and calcium oxide were obtained. The phase composition and properties—i.e., density, shrinkage, hardness, bending strength, and roughness—of the fractured surfaces of the isostatically re-pressed sinters were determined.
109 citations
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TL;DR: Reaction rates of both fresh and regeneration sorbents with CO(2) were controlled by a combination of the surface chemical reaction and diffusion of product layer, and the operating parameters on reaction between solid sorbent and CO( 2) gas at high temperature were investigated.
109 citations
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TL;DR: In this paper, a series of CaO-based sorbents were synthesized from various organometallic precursors, namely, calcium propionate, calcium acetate, calcined calcium oxalate, and calcium 2-ethylhexanoate, by a simple calcination technique.
Abstract: A series of CaO-based sorbents were synthesized from various organometallic precursors, namely, calcium propionate, calcium acetate, calcium acetylacetonate, calcium oxalate, and calcium 2-ethylhexanoate, by a simple calcination technique. In general, the five organometallic precursors (OMPs) exhibit a three-step weight loss regime in their respective thermogravimetic (TG) profiles. The first weight loss occurs because of dehydration in the temperature range of 50−200 °C. The second one results from decomposition leading to the formation of calcium carbonate in the temperature range of 450−550 °C. The calcium carbonate so formed then undergoes decarboxylation at higher temperatures of 710−750 °C and results in the formation of calcium oxide. Among the various precursors evaluated, CaO-sorbents obtained from calcium propionate and calcium acetate precursors were found to exhibit the highest CO2 capture capacity. The observed results were correlated with the intrinsic properties of the precursors by means o...
108 citations
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TL;DR: In this paper, the effect of industrially produced quicklime on the strength development and pozzolanic reaction rates of different fly ash/cement (FC) systems was investigated.
108 citations