Topic
Tridymite
About: Tridymite is a research topic. Over the lifetime, 840 publications have been published within this topic receiving 14831 citations.
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TL;DR: In this article, a new method for the synthesis of tridymite is reported, where amorphous SiO2 is treated with ethylene glycol for 3 h at 196°C and then filtered and washed with distilled water.
Abstract: A new method for the synthesis of tridymite is reported in this article. When amorphous SiO2 is treated with ethylene glycol for 3 h at 196°C and then filtered and washed with distilled water, tridymite is obtained. The transmission electron microscopy equipped with energy-dispersive X-ray spectroscopy (EDX), powder X-ray diffraction (XRD), and Fourier transform infrared spectroscopy (FT-IR) are used to characterize the crystal materials. The EDX shows the material is pure silica and The XRD pattern shows this silica is tridymite phase. In order to study the formation process of tridymite, all sorts of reaction conditions are discussed in detail. The products obtained at different conditions are characterized by XRD techniques. Finally, a reasonable mechanism is proposed.
4 citations
TL;DR: In this paper , phosphate waste rocks, abundant in different regions of Morocco, are investigated as a candidate material for partial/entire replacement of conventionally used industrial minerals and several recipes for the production of tiles are tested, based on raw materials from five representative phosphate waste waste rocks mine sites and a raw clay from Safi's region in Morocco.
4 citations
TL;DR: The recent discovery of monoclinic tridymite within an otherwise lacustrine mudstone in Gale crater, Mars raises significant questions about its formation and the extent of magmatic evolution on that planet as discussed by the authors .
4 citations
Patent•
04 Jan 19684 citations
Patent•
11 May 2001
TL;DR: In this paper, the main crystal phase of the crystallized glass is a petalite phase and a lithium disilicate phase, and the subcrystal phase is a β-cristobalite and a tridymite phase.
Abstract: PROBLEM TO BE SOLVED: To make fine crystal particles, to decrease the coefficient of thermal expansion and to prevent elution of lithium from the glass in a SiO2-Al2O3-Li2O crystallized glass for a magnetic disk board having lithium disilicate, β- cristobalite and tridymite phases. SOLUTION: The main crystal phase of the crystallized glass is a petalite phase and a lithium disilicate phase, and the subcrystal phase is a β-cristobalite and a tridymite phase. The quantitative proportion of each crystal phase measured by Rietvelt quantitative analysis ranges as follows: 30 wt.%<= lithium disilicate phase <=45 wt.%, 20 wt.%<= petalite phase <=35 wt.%, 3 wt.%<= β- cristobalite phase <=10 wt.%, and 3 wt.% <= tridymite phase <=10 wt.%.
4 citations