Page 176 - CW E-Magazine (11-3-2025)

Special Report

counterparts. (Chem. Eng. Sci., 2025, results in epoxy resins with high hydro
304, 1 Feb. 120979; DOI; 10.1016/j. phobicity, low dielectric constant, good
ces.2024.120979). impact toughness, low combustion
heat release rate, and low total heat
TEMPO microemulsion release. Comparisons are made with
enabling extremely high the well-known epoxy resins. (Reactive
capacity catholyte in aqueous and Functional Polymers, 2025, 207,
organic redox flow batteries February, 106114; DOI; 10.1016/j.
sizes, respectively. Under optimal condi- reactfunctpolym.2024.106114).
tions, 66% yield was realized with 90% Z. Xiang et al have reported that the title
Faradaic efficiency at 50-mAcm current strategy works. Microemulsion has high Synthesis of ethylphenols
2-
density. With ongoing technological TEMPO solubility (3.45M), decent ionic (EPs) and xanthenes (Xs) via
advances, coupled with renewable elec- conductivity, and low viscosity. The reaction of calcium carbide
tricity, future project cost reductions are microemulsion consists of acetonitrile and phenol (P)
possible. (Reaction Chem. Eng., 2025; and tetrabutylammonium chloride. The
DOI: 10.1039/D4RE 0034CB). unit has a capacity of 60.6 AhL . (Chem. X. Liu et al have reported an interesting
-1
Eng. Sci., 2025, 304, 12 Feb., 121093; synthesis where the reaction is con-
Asymmetric electrosynthesis DOI; 10.1016/j.ces.2024.121093). ducted at 300-400°C without additional
solvent and catalysts. DFT calculations
X. Jiang et al have come out with the Economic and ecological were done. In addition of EPs, Xs were
novel title strategy to produce complex evaluation of demand side unexpectedly formed with a yield of 26%
chiral compounds. Important factors are management (DSM) in biogas at 350°C. Vinyl phenols are formed first
current density, potential and solvent. production and dehydration to diphenyl ether can
However, the high selectivity relies happen. Vinyl phenols go to EPs with
on the synergistic interplay between L.S. Roder et al have discussed the hydrogen from P. (Reaction Chem. Eng.,
electrode reactions and chiral catalysts. influence of agitation intervals on biogas 2025; DOI: 10.1039/D4RE00397G).
This review has covered recent develop- production and the economic advanta-
ments, including a discussion on chiral ges of DSM in fermenter agitation are Safe and sustainable
electrodes. (Green Chem., 2025; DOI: highlighted. Further, optimal agitation industrial-scale production
10.1039/D4GC 053164). intervals corresponding to different of anhydrous diazomethane
electricity price levels are discussed. (DM) via a fully DCS/
Bisphenol-A epoxy resin This is all the more important as more SIS-controlled continuous
with excellent breakdown than half of the electricity requirement flow synthesis: Synthesis of
strength and competitive glass for biogas production is consumed by the α-haloketones
transition temperature (GTT) agitation. (Chemie Ing. Technik, 2024;
DOI: 10.1002/cite.202300157). L. Que et al have safely manufactured
M. Li et al have reported the successful anhydrous DM in nitrogen (12%V/V,
development of bisphenol-A EP with Preparation of modified moisture at less than 0.5 gm per cum)
superior electric breakdown strength epoxy resin with high in a fully automatic way, in a 1,500 kg
(366.39 KV/mm) and competitive GTT hydrophobicity, low dielectric per month scale. This was done with
of 140.91°C. Simulations were done constant, toughness, and N-methyl-N-nitroso-p-toluenesulfon-
through DFT and MD to provide guid- flame retardance by epoxy- amide reaction with KOH, and a custom-
ance for the development of high-perfor- functionalized siloxanes designed gas-liquid distributor. This
mance epoxy resin. These authors have DM was used to make α-haloketones,
elucidated the relationships between Y. Zhang et al have synthesized a series which serve as key intermediates for
macroscopic performance and micro- of α,ω-dimethylglycidyloxy propyl- anti-HIV and antihypertension drugs
scopic structure in epoxy resins. They terminated PDMS oligomer (PDMS-GE), such as Atazanavir and Nebivolol. The
optimized both the molecular and cross- with different polymerization degrees microchannel flow reactor was designed
linked structure and have reported that and used it to modify the bisphenol specifically. (Org. Proc. Res. Dev., 2024;
their product outperformed commercial A diglycidyl ether epoxy resin. This DOI: 10.1021/acs.oprd.4c00449).

176 Chemical Weekly March 11, 2025

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