Hydroxylated magnesium fluorides

For hydroxylated magnesium fluoride, the range from 100 to 40 wt% aqueous HF at a constant HF to Mg ratio of 2 results in Brpnsted acidic samples of different strengths for hydroxylated aluminum fluoride even higher water concentrations can be applied. These samples possess very high surface areas ranging from 200 to 450 mVg. Moreover, adsorption of CO reveals the presence of fivefold and fourfold coordinate Mg sites at the surface. This additional finding... 

Nevertheless, by working in solvent-free conditions and under autogenic pressure the partly hydroxylated magnesium fluorides display moderate catalytic performances in the alkylation of benzene with benzylic alcohol (Figure 6.21) [80]. 

Figure 6.28 Proposed Homogeneous/Heterogeneous Mechanism for the Degradation of Cellulose to Glucose in the Presence of Sn-Doped Hydroxylated Magnesium Fluorides [145].

Nanoscopic, partly hydroxylated magnesium fluorides (Mgp2 ,(0H), with x < 0.1) seem to possess appropriate characteristics for this synthesis [147]. Moreover, to further optimize the reaction conditions nonconventional methods to activate reactant molecules such as micro-waves or ultrasound irradiation were used. 

Bone is a porous tissue composite material containing a fluid phase, a calcified bone mineral, hydroxyapatite (HA), and organic components (mainly, collagen type). The variety of cellular and noncellular components consist of approximately 69% organic and 22% inorganic material and 9% water. The principal constiments of bone tissue are calcium (Ca ), phosphate (PO ), and hydroxyl (OH ) ions and calcium carbonate. There are smaller quantities of sodium, magnesium, and fluoride. The major compound, HA, has the formula Caio(P04)g(OH)2 in its unit cell. The porosity of bone includes membrane-lined capillary blood vessels, which function to transport nutrients and ions in bone, canaliculi, and the lacunae occupied in vivo by bone cells (osteoblasts), and the micropores present in the matrix. 

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