Quantitative determination of gypsum in calcium sulfate hemihydrate by differential thermal analysis
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چکیده
منابع مشابه
suppression of coke formation in thermal cracking by coke inhibitors
the main purpose of this research was to:1.develop a coking model for thermal cracking of naphtha.2.study coke inhibition methods using different coke inhibitors.developing a coking model in naphtha cracking reactors requires a suitable model of the thermal cracking reactor based on a reliable kinetic model.to obtain reliable results all these models shall be solved simultaneously.for this pu...
15 صفحه اولA new precipitation pathway for calcium sulfate dihydrate (gypsum) via amorphous and hemihydrate intermediates.
This work investigates the early stages of precipitation of calcium sulfate from aqueous solution at room temperature and shows for the first time that amorphous calcium sulfate (ACS) and calcium sulfate hemihydrate are sequentially precipitated prior to calcium sulfate dihydrate (gypsum).
متن کاملRapid Titrimetric Determination of Sulfate in Mixtures of Gypsum, Anhydrite, Calcium Oxide, and Calcium Sulfide Using Ion Exchange
The conventicnal sulfate determination by gravimetrically precipitating barium sulfate is very tedious and time consuming. The present technique uses an ion exchanger so the sulfate can be titrimetrically determined as sulfuric acid. An analysis can be completed in 30 minutes. This method is being used for the routine analysis of sulfate in mixtures of gypsum, anhydrite, calcium oxide, and calc...
متن کاملINVESTIGATING THE RELATIONSHIP BETWEEN HEAT OF HYDRATION AND PHYSICO-MECHANICAL PROPERTIES OF CALCIUM SULFATE HEMIHYDRATE IN THE PRESENCE OF ADDITIVES
This article addresses the interplay between heat of hydration and physico-mechanical properties of calcium sulfate hemi-hydrate in the presence of retarding additives such as citric and malic acids and sodium citrate. The heat of hydration was measured using a semi-isothermal calorimeter. Results proved that citric and malic acids had superior impact on hydration and mechanical properties. Whi...
متن کاملSocket preservation with medical grade calcium sulfate hemihydrate: a radiographic study evaluating the dimensional changes of the alveolar ridge
Background and Aim: Medical grade calcium sulfate hemihydrate (MGCSH) is used as a bone graft material for socket preservation. This study aimed to evaluate the changes in bone width and height after tooth extraction and socket preservation with MGCSH using cone-beam computed tomography (CBCT). Materials and Methods: This study evaluated 17 systemically healthy patients over a 1-year period. Th...
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ژورنال
عنوان ژورنال: BUNSEKI KAGAKU
سال: 1967
ISSN: 0525-1931
DOI: 10.2116/bunsekikagaku.16.1040