Page 158 - CW E-Magazine (24-6-2025)

Special Report

(VA) – can be used to make esters with carboxylate-binding modules containing zeolite plays a decisive role. Pentoses
C-4 to C-10 alcohols and subsequent LMPOs were adopted. Thus, cellulose with different molecular configurations
reaction with glycerol carbonate (bypass- fibres can be modified differently. (ACS produced different products. (Catalysis
ing use of epichlorohydrin). The pro Sustainable Chem. Eng., 2024; DOI: Commun., 2024, 187, Feb., 106904;
ducts so obtained were fully characterised 10.1021/acssuschem.eng.4C06802). DOI: 10.1016/j.catcom.2024.106904).
and CMC could be around 5.05x10 M.
-5
(ACS Sustainable Chem. Eng., 2024; Valorisation of sugarcane Kolbe electrolysis for recycling
DOI: 10.1021/acssuschemeng.4C07411). hemicellulose (SCHC) non-aqueous fatty acid salts
hydrolysate to green chemicals K. Hiromori et al have referred to the
Preparation of TEMPO- over BEA zeolites production of soapstock, composed of
oxidised cellulose hydrogels organic acid salts, during the refining
modified with β-Cyclodextrin E.M. Albuquerque et al have reported process of vegetable oils. These authors
and k-Carrageenan for the title process with BEA zeolites having have carried out Kolbe electrolysis of
potential adsorption Si/Al ratio from 12 and 19. A model the water-insoluble organic acids when
application hydrolysate was prepared considering they are in salt-form, resulting in dime-
rised hydrocarbon and NaOH. These
L.O. Mota et al have reported the title hydrocarbons can be used as alternative
preparation of hydrogels via chemical biofuel, etc. This electrolysis proceeded
crosslinking of microcrystalline cellu- efficiently at high temperatures, low
lose oxidised by TEMPO. Modifiers voltages, and high concentrations. This
such as β-Cyclodextrin were used. Sur- process produces more energy than it
face areas varied from 211 to 697 m /gm. consumes. (J. Chem. Eng., Japan, 2024,
2
57, Issue1; DOI:10.1080/00219592.20
24.2332621).

Efficient oxidative cyanation
of Fructose (F) to nitriles over
acidic-MnOx under ambient
air pressure

W. Shao et al have successfully doped
MnO with C and N through a hydro-
2
thermal process and this leads to the forma-
Hydrogels modified with k-Carrageenan typical concentrations of xylose, arabi- tion of unsaturated Mn and O sites. The
were found to have a high adsorption nose, furfural, and acetic acid. BEA conversion is a two-step process where
performance. (ACS Omega, 2024; DOI: zeolite was an effective catalyst to make firstly F is converted to hydroxyl methyl
10.1021/acsomega.4C08188). platform molecules. Acetic acid partici- furfural (HMF) and then converted to
pated in the reaction as a catalyst, but hydroxyl methyl furfural carbonitrile
LPMO (Lytic Polysaccharide
Monooxygenesis) – catalysed
oxidation of cellulose fibres
with controlled addition of a
reductant and H O
2 2

K. Mariamaa et al have worked on the
title enzymatic engineering to introduce
functional groups onto cellulose surface,
which allows further functionalisation.
Gallic acid was used as a reductant
and H O was added; three different
2 2

158 Chemical Weekly June 24, 2025

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