On the kinetics of magnesia hydration in magnesium acetate solutions

Filippou, D; Katiforis, N; Papassiopi, N; Adam, K

dc.contributor.author	Filippou, D	en
dc.contributor.author	Katiforis, N	en
dc.contributor.author	Papassiopi, N	en
dc.contributor.author	Adam, K	en
dc.date.accessioned	2014-03-01T01:14:55Z
dc.date.available	2014-03-01T01:14:55Z
dc.date.issued	1999	en
dc.identifier.issn	0268-2575	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/13275
dc.subject	Hydration	en
dc.subject	Kinetics	en
dc.subject	Magnesium acetate	en
dc.subject	Magnesium hydroxide	en
dc.subject	Magnesium oxide	en
dc.subject.classification	Biotechnology & Applied Microbiology	en
dc.subject.classification	Chemistry, Multidisciplinary	en
dc.subject.classification	Engineering, Chemical	en
dc.subject.other	Activation energy	en
dc.subject.other	Dissolution	en
dc.subject.other	Hydration	en
dc.subject.other	Particles (particulate matter)	en
dc.subject.other	Powders	en
dc.subject.other	Precipitation (chemical)	en
dc.subject.other	Reaction kinetics	en
dc.subject.other	Magnesium acetate	en
dc.subject.other	Magnesium hydroxide	en
dc.subject.other	Magnesia	en
dc.subject.other	acetic acid	en
dc.subject.other	magnesium	en
dc.subject.other	magnesium hydroxide	en
dc.subject.other	magnesium oxide	en
dc.subject.other	article	en
dc.subject.other	chemical reaction kinetics	en
dc.subject.other	dissolution	en
dc.subject.other	hydration	en
dc.subject.other	precipitation	en
dc.subject.other	temperature	en
dc.title	On the kinetics of magnesia hydration in magnesium acetate solutions	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/(SICI)1097-4660(199904)74:4<322::AID-JCTB35>3.0.CO;2-L	en
heal.identifier.secondary	http://dx.doi.org/10.1002/(SICI)1097-4660(199904)74:4<322::AID-JCTB35>3.0.CO;2-L	en
heal.language	English	en
heal.publicationDate	1999	en
heal.abstract	High-quality magnesium hydroxide powders can be produced by hydrating slow-reacting magnesia in dilute magnesium acetate solutions. The kinetics of this process are very crucial for process design and control, and for the production of a powder with desirable particle morphology. In this work, industrial heavily-burned magnesia powders were hydrated in 0.01-0.1 mol dm-3 magnesium acetate solutions at temperatures ranging between 333 and 363 K. Examination of the magnesium hydroxide produced and the analysis of the kinetic data suggest that the hydration of heavily burned magnesia in magnesium acetate solutions is a dissolution-precipitation process controlled by the dissolution of magnesia particles. The activation energy was estimated to be 60 kJ mol-1, while the reaction order with respect to acetate concentration was found to be about one.High-quality magnesium hydroxide powders can be produced by hydrating slow-reacting magnesia in dilute magnesium acetate solutions. The kinetics of this process are very crucial for process design and control, and for the production of a powder with desirable particle morphology. In this work, industrial heavily-burned magnesia powders were hydrated in 0.01-0.1 mol dm-3 magnesium acetate solutions at temperatures ranging between 333 and 363 K. Examination of the magnesium hydroxide produced and the analysis of the kinetic data suggest that the hydration of heavily burned magnesia in magnesium acetate solutions is a dissolution-precipitation process controlled by the dissolution of magnesia particles. The activation energy was estimated to be 60 kJ mol-1, while the reaction order with respect to acetate concentration was found to be about one.	en
heal.publisher	John Wiley & Sons Ltd, Chichester, United Kingdom	en
heal.journalName	Journal of Chemical Technology and Biotechnology	en
dc.identifier.doi	10.1002/(SICI)1097-4660(199904)74:4<322::AID-JCTB35>3.0.CO;2-L	en
dc.identifier.isi	ISI:000079890300004	en
dc.identifier.volume	74	en
dc.identifier.issue	4	en
dc.identifier.spage	322	en
dc.identifier.epage	328	en