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HKUST-1 (HKUST ⇒ Hong Kong University of Science and Technology), [1] which is also called MOF-199, [2] is a material in the class of metal-organic frameworks (MOFs). Metal-organic frameworks are crystalline materials, in which metals are linked by ligands (so-called linker molecules) to form repeating coordination motives extending in three ...
HKUST-1 is another early example of a divalent carboxylate MOF. [4] Reported around the same time as MOF-5, HKUST-1 is a copper ‘paddlewheel’ based MOF where two copper ions form a dimeric unit with four bridging carboxylates creating a square planar geometry around two adjacent copper sites. The two copper ions in the paddlewheel ...
As one might expect, given the greater Lewis acidity of Cr(III) vs. Cu(II), MIL-101 is much more active than HKUST-1 as a catalyst for the cyanosilylation of aldehydes. Additionally, the Kaskel group observed that the catalytic sites of MIL-101, in contrast to those of HKUST-1, are immune to unwanted reduction by benzaldehyde.
Environmentally-friendly synthesis based on supercritical carbon dioxide (scCO 2) have been also reported as a feasible procedure for the preparation of ZIF-8 at an industrial scale. [38] Working under stoichiometric conditions, ZIF-8 could be obtained in 10 hours and does not require the use of ligand excess, additives, organic solvents or ...
MIL-53(Cr) was the first reported member of the MIL-53 family and is built up from Cr 3+ as metal center and terephthalate (benzene-1,4-dicarboxylate) as linker molecules. [1] Based on the toolbox-like design of metal-organic framework materials, different metal centers or linker molecules can be used for the synthesis of other members of the ...
On the Mexican side of an international bridge to El Paso, Texas, more than two dozen men, women and children from Cuba, Colombia and Venezuela were waiting for their 1 p.m. appointments.
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Toilet paper is a hot topic, especially when it comes to the right way to hang it. The "over or under" dispute can become a matter of contention between even spouses, with heated arguments ...