- Generalized preparation method and characterization of aluminum isopropoxide, aluminum phenoxide, and aluminum n-hexyloxide
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We report an optimized synthesis of aluminum n-hexyloxide (AH), aluminum phenoxide (APh) and aluminum isopropoxide (AIP) with high yields. Aluminum alkoxides, among other applications, are important starting materials to produce high surface area alumina catalyst supports for catalytic applications, such as hydrocracking and supported Fischer-Tropsch catalysts (FT). One mole of aluminum was reacted with excess alcohol in the presence of 0.001 mole mercuric chloride catalyst. All solid alkoxides were obtained in high yields (90-95%) and analyzed by 1H NMR, 13C NMR and 27Al NMR, X-ray diffraction (XRD), ICP-MS and elemental analysis. Aluminum n-hexyloxide was synthesized and characterized for the first time. Results indicate that fresh AH, APh, and AIP have the same coordination number of aluminum, but AIP changes as it ages.
- Maryam, Khosravi M.,Andrus, Merritt B.,Burt, Scott R.,Woodfield, Brian F.
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- A magnesium tetraphenylaluminate battery electrolyte exhibits a wide electrochemical potential window and reduces stainless steel corrosion
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Using Al(OPh)3 rather than the typical AlCl3 with Grignard reagents affords a Mg-ion electrolyte with a reduced chloride content. A 1:4 Al(OPh)3-PhMgCl mixture gives a magnesium tetraphenylaluminate salt that exhibits anodic stability up to 5 V vs. Mg2+/0 on both platinum and stainless steel working electrodes, and shows much reduced corrosion (pitting) of stainless steel after extended electrolysis at 4.5 V.
- Nelson, Emily G.,Brody, Scott I.,Kampf, Jeff W.,Bartlett, Bart M.
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- Phenol alkylation process
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Phenol is di-orthoalkylated in high yield by reacting, in a first stage, phenol containing only 1 mole of an aluminum phenoxide for each 100-800 moles of phenol with an olefin at 85°-175° C. until the reaction mixture contains 3 wt percent or less phenol and then, in a second stage, continuing the reaction at 25°-80° C. until the mixture contains a substantial amount of 2,6-di-alkylphenol.
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- Process for the preparation of ortho-hydroxybenzyl alcohols
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This invention relates to a process for the selective preparation of ortho-hydroxybenzyl alcohols and, in particular, ortho-hydroxybenzyl alcohol. According to the invention, the reaction of a phenol with an aldehyde in an initially anhydrous medium and in the presence of a catalytic amount of a metal phenate, results in the selective production of ortho-hydroxybenzyl alcohols.
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