On the Occurrence and Paragenesis of Magnesium-Borate Minerals in Dolomite Contact Skarns

Magnesium borates are one of the major groups of boron minerals that have good neutron shielding performance. In this study, dehydrated magnesium borates were synthesized by solid-state method using magnesium oxide (MgO) and boron oxide (B2O3), in order to test their ability of neutron shielding. After synthesizing the dehydrated magnesium borates, characterizations were done by X-ray Diffraction (XRD), fourier transform infrared (FT-IR), Raman spectroscopy, and scanning electron microscopy (SEM). Also boron oxide (B2O3) contents and reaction yields (%) were calculated. XRD results showed that seven different types of dehydrated magnesium borates were synthesized. 1000°C reaction temperature, 240 minutes of reaction time, and 3 : 2, 1 : 1 mole ratios of products were selected and tested for neutron transmission. Also reaction yields were calculated between 84 and 88% for the 3 : 2 mole ratio products. The neutron transmission experiments revealed that the 3 : 2 mole ratio of MgO to B2O3neutron transmission results (0.618–0.655) was better than the ratio of 1 : 1 (0.772–0.843).

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Magnesium Borate Synthesis by Microwave Energy: A New Method

Journal of Chemistry ◽

10.1155/2013/329238 ◽

2013 ◽

Vol 2013 ◽

pp. 1-6 ◽

Cited By ~ 7

Author(s):

Azmi Seyhun Kipcak ◽

Emek Moroydor Derun ◽

Sabriye Piskin

Keyword(s):

Reaction Times ◽

High Heat ◽

New Method ◽

X Ray Diffraction ◽

Magnesium Borate ◽

X Ray ◽

Boron Minerals ◽

Ft Ir ◽

Borate Minerals

Magnesium borates are one of the major groups of boron minerals that have important properties such as high heat and corrosion resistances and high coefficients of elasticity. In this study, magnesium borate minerals are synthesized using boric acid and magnesium oxide with a new method of microwave, and the synthesized minerals are characterized by various analysis techniques. The results show that pure, “magnesium borate hydrate” minerals are obtained at the end of various steps. The characterization of the products is determined with the techniques of X-Ray Diffraction (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Raman Spectroscopy, and Scanning Electron Microscopy (SEM). Additionally, overall “magnesium borate hydrate” yields are calculated and found about 67% at 270 W, 8 minutes and 360 W, 3 minutes of reaction times, respectively.

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Synthesis and characterization of magnesium borate minerals of admontite and mcallisterite obtained via ultrasonic mixing of magnesium oxide and various sources of boron: a novel method

TURKISH JOURNAL OF CHEMISTRY ◽

10.3906/kim-1307-61 ◽

2014 ◽

Vol 38 ◽

pp. 792-805 ◽

Cited By ~ 9

Author(s):

Azmi Seyhun KIPÇAK ◽

Emek MOROYDOR DERUN ◽

Sabriye PİŞKİN

Keyword(s):

Magnesium Oxide ◽

Synthesis And Characterization ◽

Magnesium Borate ◽

Novel Method ◽

Borate Minerals

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The Synthesis and Physical Properties of Magnesium Borate Mineral of Admontite Synthesized from Sodium Borates

Advances in Materials Science and Engineering ◽

10.1155/2014/819745 ◽

2014 ◽

Vol 2014 ◽

pp. 1-9 ◽

Cited By ~ 10

Author(s):

Azmi Seyhun Kipcak ◽

Meral Yildirim ◽

Sureyya Aydin Yuksel ◽

Emek Moroydor Derun ◽

Sabriye Piskin

Keyword(s):

Physical Properties ◽

Voltage Source ◽

Magnesium Borate ◽

Sem Images ◽

Neutron Shielding ◽

Code Number ◽

Ir And Raman Spectroscopies ◽

Ft Ir ◽

Borate Minerals ◽

Ir And Raman

Magnesium borates are significant compounds due to their advanced mechanical and thermal durability properties. This group of minerals can be used in ceramic industry, in detergent industry, and as neutron shielding material, phosphor of thermoluminescence by dint of their extraordinary specialties. In the present study, the synthesis of magnesium borate via hydrothermal method from sodium borates and physical properties of synthesized magnesium borate minerals were investigated. The characterization of the products was carried out by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) and Raman spectroscopies, and differential thermal analysis and thermal gravimetry (DTA/TG). The surface morphology was examined by scanning electron microscopy (SEM). B2O3content was determined through titration. The electrical resistivity/conductivity properties of products were measured by Picoammeter Voltage Source. UV-vis spectrometer was used to investigate optical absorption characteristics of synthesized minerals in the range 200–1000 nm at room temperature. XRD results identified the synthesized borate minerals as admontite [MgO(B2O3)3·7(H2O)] with code number “01-076-0540” and mcallisterite [Mg2(B6O7(OH)6)2·9(H2O)] with code number “01-070-1902.” The FT-IR and Raman spectra of the obtained samples were similar with characteristic magnesium borate bands. The investigation of the SEM images remarked that both nano- and microscale minerals were produced. The reaction yields were between 75.1 and 98.7%.

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