Crystal structure and solution thermodynamics of the lactate complex Zn[(C3H5O3)2(H2O)2]⋅H2O(s)

Hydrolytic depolymerisation of polyesters over heterogeneous ZnO catalyst

“…On the basis of the experimental data and the known literature, we can hypothesize that the interaction between amphoteric ZnO and the incipient LA formed upon hydrolysis is responsible for the formation of soluble, yet catalytically inactive, zinc species. 35 Experiments performed using PLA samples with higher molecular weights showed the hydrolysis reaction not to be significantly affected by the PLA chain length, which still resulted in 100% LA yield under the usual reaction conditions (Table 1). This suggests the hydrolytic depolymerisation of PLA to occur via an ester linkage random-scission process, as previously reported for homogenous catalysts.…”

Enhanced Recovery of Zn from Carbonate-Type Mixed Oxidized Ore (CMO) by Combining Organic Acid Leaching with Mechanical Activation

“…By comparison, lactic acid had the second smallest molecular volume among the six selected organic acids, leading to a more effective mass diffusion [22]. The lactate complex Zn[(C 3 H 5 O 3 ) 2 (H 2 O) 2 ]•H 2 O has also been proven to be highly soluble in water [23]. It could be concluded that lactic acid had moderated acidity and small steric hindrance, which led to higher selectivity for Zn than Pb.…”

Diverse Coordination Chemistry of the Whole Series Rare-Earth L-Lactates: Synthetic Features, Crystal Structure, and Application in Chemical Solution Deposition of Ln2O3 Thin Films

“…Although L-lactic acid (henceforth HLact) is widely used in modern chemistry and chemical technology, simple metal salts of HLact remain poorly studied. There are few reports on the synthesis and characterization of Zn [26][27][28], Co [29], Mn [30], Zr [31], and UO 2 2+ [32] lactates or the heterocationic and mixed-ligand compounds K 2 [{VO(O 2 )(Lact )} 2 ] [33], (NH 4 ) 2 [Ti(Lact ) 3 ] [34], (NEt 4 ) 2 [VO 2 (Lact )] 2 and (Ph 3 P=N=PPh 3 ) 2 [VO 2 (Lact )] 2 [35], (TMA) 3 [Mn 2 (Lact)(Lact ) 4 ]•H 2 O [36] (TMA = NMe 4 + ), Zr(OH)Lact 3 [31], (NH 4 ) 4 [Ta 2 (Lact') 4 (O 2 ) 2 O]•3H 2 O [37], [Cu(Lact)Cl(dipyam)] (dipyam = 2,2 -dipyridylamine) [38], [Cu(Lact) (ClO 4 )(phen)] 4 (phen = 1,10-phenanthroline) [39], [Ni 6 (Lact') 2 (Lact) 2 Piv 6 (HPiv) 8 ]•2HPiv (HPiv = pivalic acid) [40], [Cu(Lact) 2 (SS)]•4H 2 O, and [Cu 2 (Lact) 4 (SCS) 3 ] (SS = 4,4dipyridyldisulfide; SCS = bis(4-pyridylthio)methane) [41] (here, Lact' corresponds to the lactic acid dianion CH 3 CH(O -)COO -). Among RE lactates, only a few compounds have been synthesized and characterized to date.…”