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 authors used shrimp shells as a green source of precursors to produce calcium oxide nano-plates ranging from 40 to 130 nm (in length) and 30 to 100 nm(in width).
44 citations
Journal Article•
TL;DR: In this paper, Scherrer et al. showed that X-ray DIFFRACTION and DIFFERENTIAL THERMAL ANALYSIS showed Varying PROPORTions of converting MINERALS and LIME into POZZolanic reaction products.
Abstract: SEPARATE SLURRIES OF HIGH CALCIUM HYDRATED LIME OR DOLOMITIC MONOHYDRATE OR DIHYDRATE LIME WERE MADE WITH PURE BENTONITE, KAOLINITE, PULVERIZED MUSCOVITE, QUARTZ, OR VERMICULITE MINERAL AND VARIOUS AMOUNTS OF WATER. THE MIXES WERE SEALED IN PLASTIC CONTAINERS TO PREVENT LOSS OF WATER OR ENTRY OF CARBON DIOXIDE, AND CURED AT 70 F FOR TWO YEARS, AFTER WHICH X-RAY DIFFRACTION AND DIFFERENTIAL THERMAL ANALYSIS SHOWED VARYING PROPORTIONS OF CONVERSION OF MINERALS AND LIME INTO POZZOLANIC REACTION PRODUCTS. REACTION PRODUCTS WERE IDENTIFIED ON THE BASIS OF DIFFRACTOMETER D-SPACINGS. SINGLE CRYSTALS OF SEVERAL OF THE PRODUCTS WERE ISOLATED AND UNIT CELL PARAMETERS OBTAINED BY USE OF A DIFFRACTOMETER SINGLE CRYSTAL ORIENTER. DEBYE- SCHERRER POWDER DIFFRACTION DATA FROM CRUSHED SINGLE CRYSTALS ARE PRESENTED IN ASTM FORMAT AND RELATED TO THE DIFFRACTOMETER DATA. AMONG THE REACTION PRODUCTS ARE THE CALCIUM SILICATE HYDRATE 10-ANGSTRON TOBERMORITE, 8.2- AND TETRA-CALCIUM ALUMINATE HYDRATES, AND SEVERAL COMPOUNDS OF UNKNOWN COMPOSITION. /AUTHOR/
44 citations
TL;DR: In this paper, CaO-based sorbents were prepared using the precipitation of solutions containing different anion precursors, in order to capture carbon dioxide for the capture of carbon dioxide.
Abstract: Calcium oxide is a known adsorbent for the capture of carbon dioxide. In this study, CaO-based sorbents were prepared using the precipitation of solutions containing different anion precursors, inc...
44 citations
TL;DR: A series of plastic materials from recycled polyethylene (PE) and oyster-shell powder were prepared to test their fire-retardant properties with the aim of finding a practical way of waste recycling as discussed by the authors.
Abstract: A series of plastic materials from recycled polyethylene (PE) and oyster-shell powder were prepared to test their fire-retardant properties with an aim of finding a practical way of waste recycling. Oyster-shell powder was found to be mainly composed of calcium carbonate and it decomposed to calcium oxide and carbon dioxide at temperature higher than ∼800°C, thus preventing fire from access of oxygen by the produced carbon dioxide. This fire-retardation mechanism is environmental-friendly, since another available method, the inclusion of halogen-containing compounds, normally generates toxic chemicals like dioxine during incineration. To improve mechanical properties of this composite material, surface of oyster-shell powder was coated with cetyltrimethylammonium bromide (CTAB). Flame retardation and the mechanical properties of these composite resins were analyzed. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 1583–1589, 2006
44 citations
TL;DR: Calcium oxide is an efficient adsorbent for high-temperature CO2 capture process, however, it suffers from rapid deactivation and capacity loss after a few cycles as a result of particle sintering as discussed by the authors.
Abstract: Calcium oxide is an efficient adsorbent for high-temperature CO2 capture process, however, it suffers from rapid deactivation and capacity loss after a few cycles as a result of particle sintering....
43 citations