Page 179 - CW E-Magazine (22-4-2025)

Special Report

Process optimisation took B activity to ment of wheat straw, giving over 74% have given the chemoselective and
1.24 CDU/mL and protein concentration L removal and 94% cellulose retention. controlled catalyst which can be easily
by 1.37 fold. 98.6% of the beta-O-4 linkages in L are prepared, and details are given. (Angew.
preserved. Further useful products can Chem. Intl. Ed., 2024; DOI: 10.1002/
Further purifi cation was done via ultrafi l- be produced. (Chem. Eng. Sci., 2025; anie.202418488).
tration and adsorptive chromatographic DOI: 10.1016/j.ces.2024.120880; 302,
purifi cation to concentrate and removal Part-A, 5 Feb, 120880). Assessment of the recovery of
of colour. This is a useful strategy to Erythritol (E) using Boronic
recover B. (ACS Sustainable Resource Highly effi cient selective Acid (BA)
Management, 2024; DOI: 10.1021/ hydrogenation of furfural (F)
acssus.res.mgt.4C00283). Daza-Serna et al have referred to the
to tetrahydrofurfuryl alcohol
CO switchable solvents (THFA) production of E via fermentation where
2
for sustainable dissolution, its recovery from the broth containing
modifi cation, and processing Z. Zhang et al have used MOF-derived glycerol and glucose is of importance.
Co-Ni bimetallic catalyst for the title Polymer of p-vinylphenylboronic acid,
of cellulose materials reaction. XCoyNi/C gave highest yield of cross-linked with divinylbenzene, was
P. Mcneice and B.L. Feringa have given a THFA of 99%+. The method of making
critical review of the title subject. The use catalysts is reported along with charac-
of CO switchable solvents facilitate the terisation. DFT calculations were done.
2
dissolution of cellulose through its activa- (J. Catalysis, 2024, 440, Dec., 115824;
tion with a base and CO . Subsequently, DOI: 10.1016/j.cat.2024.115824).
2
cellulose can be regenerated via range
of morphologies – fi bres, fi lms, gels, or Chemoselective ring-
chemically modifi ed in a controlled ho- opening polymerisation of
mogeneous manner. (Green Chem., 2024; α-methylene-δ-valerolactone used as an adsorbent. Under the best con-
DOI: 10.1039/D4GC04032E). (MV) catalysed by simple dition 71% of the initial E was recovered
organoaluminium complex to as a complex and a separation factor of
Elevating monosaccharides prepare closed-loop recyclable 4 is reported. Desorption was done with
and monophenols production functional polyester sulphuric acid.
from wheat straw components
13
11
via in-situ tailored lignin (L) Q. Yan et al have referred to MV as a Solid-state B and C NMR were used
with Deep Eutectic Solvents bio-renewable bifunctional monomer, to study adsorption and desorption steps.
(DESs) which has shown great promise to pre- (Ind. Eng. Chem. Res., 2024; DOI:
pare closed-loop recyclable polyester 10.1021/acs.iecr.4C01234).
S. Sun et al have worked with hydrox- with pendent functionalisable double
yl-containing nucleophilic reagents, bond. There are problems in ring-open- Ternary bio-based monomer
integrated into acidic DESs for pretreat- ing polymerisation and these authors toward the polyesters with
high UV shielding and water-
degradation properties

H. Liu and Y. Yu have worked on the title
challenging problem. A ternary cyclic
monomer (denoted as FBPC) contain-
ing one furan and two pyrrolidones was
prepared by an aza-Michael addition re-
action using biobased furandiamine and
dimethyl itaconate. Melt polymerisation
was adopted for FBPC with various
diols to prepare homopolyesters with a
number-average molecular mass (M ), in
n
the range of 22.4-303 Da. These products

Chemical Weekly April 22, 2025 179

Contents Index to Advertisers Index to Products Advertised