Author: Katayoon Mohseni
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description

Author: George R. Hood
Publisher:
ISBN:
Category :
Languages : en
Pages : 0

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Book Description
This book contains seven selected chapters on the chemistry of calcium carbonate. Chapter One is an overview of the production and unique properties of precipitated calcium carbonate (PCC). Chapter Two explores the potential for increasing the efficiency of doxorubicin delivery systems by means of transforming porous calcium carbonate vaterites into calcium phosphate structures. Chapters Three, Four, and Five each characterize calcium carbonate by different analytical methods. Chapter Three utilizes the X-ray fluorescence method, Chapter Four utilizes energy dispersive X-ray spectroscopy (EDS), and Chapter Five utilizes atomic force microscopy (AFM). Chapter Six is a mobile elements analysis of calcium carbonate by means of X-ray photoelectron spectroscopy (XPS) characterization. Finally, Chapter Seven is a characterization of calcium carbonate's mineral crystal structure using X-ray diffraction (XRD).

Author: Alberta Cohen
Publisher: Nova Science Publishers
ISBN: 9781634835404
Category : Calcium carbonate
Languages : en
Pages : 0

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Book Description
Calcium carbonate is one of the most abundant materials present in nature. In this book, the characterization of surface properties of calcium carbonate are reviewed, particularly, the Washburn method is described in detail. The effect of natural and synthetic macromolecules on the structure of calcium carbonate is described as well. The third chapter highlights the general criteria for the application of vaterite (an artificially prepared compound, which has the least thermodynamic stability among the three crystalline polymorphs of calcium carbonate) for biomedical applications and the science of its structural modification towards achieving tunable solubility. The final chapter examines the porous calcium carbonate cores as templates for preparation of peroral proteins delivery systems and the influence of ionic composition of intestinal medium on the structure and morphology of carbonate cores and release profiles of model and therapeutic proteins.

Author: Veda Ramaswamy
Publisher: Alpha Science International, Limited
ISBN: 9781783322091
Category : Powders
Languages : en
Pages : 348

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Book Description
Discusses the most important scientific features of the characterization of polycrystalline and amorphous materials used as catalysts through the technique of powder X-ray diffraction. Structural studies using powder X-ray diffraction patterns from a laboratory X-ray source at ambient and non-ambient conditions are well documented with illustrations and example. This book describes the choice of various instrumental parameters to be used for of solutions from powder XRD to problems while preparing and using solid materials viz., zeolites, micro and mesoporous molecular sives, oxides, clays etc., as catalyst-composites.

Author: S.S. Nanda
Publisher: CRC Press
ISBN: 1040021298
Category : Technology & Engineering
Languages : en
Pages : 221

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Book Description
Calcium-based natural minerals are important for a wide range of applications. Though these materials are available in nature, researchers are working toward developing them in the laboratory. Calcium-Based Materials: Processing, Characterization, and Applications introduces the possibility of designing these materials for particular applications. Introduces a variety of calcium-based materials and discusses synthesis, growth, and stability Provides in-depth coverage of calcium carbonate Discusses applications of calcium-based minerals in different fields Includes details on synchrotron X-ray tools for case minerals This comprehensive text is aimed at researchers in materials science, engineering, and bioengineering.

Author: T. Ahsan
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description

Author: Eric Olausson
Publisher:
ISBN:
Category : Calcium carbonate
Languages : en
Pages : 4

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Book Description
The purpose of this study was the acqui ition of data concerning factors affecting quantitative analysis of calcite and aragonite in deep-sea cores by use of X-ray diffraction. Factors to be controlled in the preparation of the powdered samples include the amount of mineral grains, their surface condition, size, shape, and orientation on the target area. Pressure and grinding effects are discussed. Experiments were made to establish a standard curve for percentage estimation of calcite in sediment samples, based on he r lation between the percentage of calcite and the calcite/fluorite intensity ratio. Two different relations were obtained between the content of calcite and the calcite/fluorite intensity ratio. Two different relations were obtained between the content of calcite and the calcite/fluorite intensity ratio; for example, for a fraction 4 - 8 microns and intensity ratio of 0.8, the percentage of calcite could be assumed to vary from 30 to 50%, dependent upon whether the coccolith or the foram curve is used. In deep-sea carbonate oozes, the coccolithophoridae/foraminifera ratio changes from area to area and from time to time.

Author: Bernard Victor Christensen
Publisher:
ISBN:
Category : Calcium carbonate
Languages : en
Pages : 220

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Book Description

Author: Society of Chemical Industry (Great Britain)
Publisher:
ISBN:
Category : Calcium
Languages : en
Pages : 500

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Book Description

Author: RF. Gebhardt
Publisher:
ISBN:
Category : Alkali-substituted calcium aluminates
Languages : en
Pages : 12

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Book Description
The X-ray diffraction pattern of KC8A3 has been determined in detail. Comparison of the KC8A3 data with new and previous X-ray diffraction data on NC8A3 and C3A shows it to be a distinctly different phase bearing close structural similarities to the other aluminates in portland cement clinker. The progression from cubic C3A to tetragonal KC8A3 to orthorhombic NC8A3 with only minor shifts in cell parameters suggests the possibility of solid solution between respective adjacent pairs in production clinkers.