The DSpace digital repository system captures, stores, indexes, preserves, and distributes digital research material. http://dspace-roma3.caspur.it:80 2013-05-18T21:07:54Z 2013-05-18T21:07:54Z Gualtieri, A. F. Lassinantti Gualtieri, Magdalena Meneghini, Carlo http://hdl.handle.net/2307/364 2011-12-22T13:34:56Z 2008-12-31T23:00:00Z

<Title>In situ synchrotron powder diffraction study of the thermal decomposition of cement-asbestos: preliminary results</Title> <Authors>Gualtieri, A. F.; Lassinantti Gualtieri, Magdalena; Meneghini, Carlo</Authors> <Issue Date>2009</Issue Date> <Is part of>Zeitschrift für Kristallographie Supplements</Is part of> <Volume>30</Volume> <Pages>353-358</Pages> <Abstract>The elimination of asbestos-containing materials like cement-asbestos, is an environmental priority. An industrial process for the safe recovery of cement-asbestos slates was recently developed and permits the thermal transformation of asbestos fibres into non-fibrous crystalline phases in a tunnel kiln. Optimisation of the process requires knowledge of the reaction dynamics. Here, time-resolved synchrotron powder diffraction was used to follow the thermal transformation of cement-asbestos. The use of a closed capillary as sample holder allowed to closely resemble the atmospheric conditions found in the industrial reactor. In this preliminary work, we describe the reaction sequence which undergoes cement-asbestos during its thermal decomposition. The excellent time resolution of the collected data allowed the observation of meta-stable phases at non-ambient conditions.</Abstract>

2008-12-31T23:00:00Z