Physical properties magnesium oxide

Comparing the two relative forces of electrostatic attraction that you calculated, you can conclude that ionic bonding is considerably stronger in magnesium oxide. This affects the physical properties and chemical behavior of the two compounds. For example, the melting point of MgO (2,852° C) is much higher than that of LiF (845° C). 

Comparison of Physical Properties of Zinc and Zinc Oxide with Aluminum and Magnesium and Their Oxides... 

Designing a catalyst for effective removal of SOx (S02 + S03) in a fluid catalyst cracking unit regenerator is a challenging problem. One must come up with a particle having physical properties similar to FCC catalysts which will 1) oxidize S02 to S03, 2) chemisorb the S03/ and 3) be able to release it as H2S as it enters the reactor side of the unit. A cerium containing magnesium aluminate spinel was found to be very effective for this purpose (1). The preparation methods and characterization techniques utilized for this spinel catalyst and how the SOx abatement activity of this catalyst is related to the preparative route used are discussed in this paper. 

The physical properties and magnesium oxide (MgO) content of the precipitated magnesium silicate depend on the t)q5e of magnesium salt, sequence of addition of magnesium salt and metal silicate as well as the nature and concentration of dispersion modifiers (e.g., nonionic surfactants, NaOH), and experimental conditions [6,7]. 

Recall that salts are ionic compounds made of cations and anions. Many of the rocks and minerals in Earth s crust are made of cations and anions held together by ionic bonds. The ratio of cations to anions is always such that an ionic compound has no overall charge. For example, in sodium chloride, for every Na" cation, there is a Cl anion to balance the charge. In magnesium oxide, for every Mg " cation, there is an O anion. Ionic compounds also share certain other chemical and physical properties. 

The physical and chemical properties of magnesium oxide are primarily governed by the source of the precursor, that is, derived from magnesite or precipitated from brine or seawater. Other important factors include time and temperature of calcination and the presence of trace impurities. Electron microscope studies have revealed that the precursor particle morphology has a large impact on the morphology of the final MgO particle. It has been shown that when brucite and magnesite crystals are thermally decomposed at low temperatures, pseudomorphs of a size and shape similar to the parent crystal are formed. 

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