Page 183 - CW E-Magazine (13-8-2024)

Special Report Special Report

maleic acid-glucose adhesive (MAG), of 80 µm. Results are encouraging. (ACS Mitigation of carbon exchange from lignocellulosic biomass, and con-
and citric acid-glucose adhesive (CAG) Sustainable Chem. Eng., 2024: DOI: resin deactivation in the one-pot currently produces a (hemi) cellulose
are referred. Characterisation of adhe- 10.1021/acssuschem.eng.4C00782). conversion of fructose (F) to pulp suitable for bioethanol production.
sives was done with respect to structural methyl levulinate (ML) This study is concerned with integration
analysis, soluble content, thermal pro Hydrogenolysis of isosorbide of both pulp and water fraction from
perties and bonding strength. PA, MA, (IS) to diols and triols over a A. Beaurepaire et al have worked on the varied RCF processing parameters into
heterogeneous Sio -supported use of environmentally friendly cation ion separate hydrolysis and fermentation
2
rh catalyst exchange resins as catalyst and used 13 using birch wood and a xylose-utilis-
different resins for the title reaction and ing saccharomyces cerevisiae strain.
P. Chen et al have reported the title found out conditions for which it was Further details are given in the pa-
catalyst, which is reusable, and the possible to drastically limit the deposition per. (ACS Sustainable Chem. Eng.,
title reaction gives 58% total yield of of humins on the resins in methanol under 2024: DOI: 10.1021/acssuschemeng.
development of biobased Study on compatibility of a diols/triols. This result is better than optimal conditions. Purolite C124 SH 4C00613).
poly(ester-urethane) (PEu) novel cardanol (c) – based com- gave the best performance and 86% yield
coatings with excellent hydro- patibilizer in PLA/PBAt blend was obtained and catalyst could be used Evaluation of 2,5-Furandi-
phobicity from tomato bypro- 10 times. (Catalysis Sci. Technol., 2024: carboxylic acid (FdcA) as a
ducts W. Wen et al have developed a novel DOI: 10.1039/D4Cγ00045E). building block for unsaturated
additive, epoxidised C grafted polylac- that realised from glucose and sorbitol; polyester resins (uPrs)
tide (PLA-g-ECA). Poly(butylene adi- coproduction of glyceric acid
E. Buratti et al have used cutin from pate-co-terephthalate) (PBAT) was also composition of diols and triols is given. (GA) and glycolic acid (GcA)
tomato byproducts to synthesize PEU studied for blends. Grafting amount could and CA undergo esterifi cation with G. (Catalysis Sci. Technol., 2024: DOI: from biomass based sugars M.Sc. B. Savalia et al have reported
coatings by a two-step reaction. Firstly, be 1.65 wt%. The blend has many desir- These products could be cured to form 10.1039/D4Cγ00266K). the preparation of three different FD-
polyester polyols (POLs) are made able properties. (Ind. Eng. Chem. Res., crosslinked structures without any Y. Liu et al have used pentose feedstocks CA-based resins, which are potentially
by esterifi cation with 1,4-butanediol 2024: DOI: 10.1021/acs.iecr.4C00634). agent. A variety of products have been Full use of lignocellulosic bio- and Ru/Co O catalyst, possessing tune- suited as general purpose resin, resin
4
3
(BDO) of the omega-hydroxy mix- analysed. These authors believe that mass for effi cient synthesis of able Ru /Ru ratio. The carbon yield was for pultrusion and resin for pipeliners
o
n+
ture from cutin (HC). PEU coating Milli-structured coiled fl ow in- the title polyester-type wood adhesive L-tyrosine (Lt) and its ana- about 66 mol% with a 1:1 molar ratio, (composed of neopentyl glycol and
were made by reaction of POLs with can replace HCHO-based adhesives. logues by engineering microbial at 70°C. Here, xylose undergoes C2-C3 1,2-propylene glycol). The mechanical
isophorone diisocyanate (IPDI) or verter for biphasic continuous (ACS Sustainable Chem. Eng., 2024/ consortia and thermal properties
hexamethylene diisocyanate (HDI). flow 5-chloromethylfurfural DOI:10.1021/acssuschemeng.4C00669). of the above resins were
IPDI gives amorphous coatings with (cMF) synthesis M. Zhao et al have developed a glu- compared with analo-
smooth surfaces. HDI gives semicrys- CMF is an important starting material Lignin Phosphate (LP): A cose-xylose, and lignin (L)-derived gous fossil-based UPRs,
talline coatings having rough surfaces. based on renewable raw material, fur- biobased substitute for zinc phenolics (GXP) system to fully utilise composed of phthalic
Coatings have good hydrophobic- fural. F. Schael et al (includes K.D.P. phosphate in corrosion-inhibi- lignocellulose for the production of LT and isophthalic acid and
ity. (ACS Sustainable Chem. Eng., Nigam from India) have used the title ting coatings and its analogues in minimal medium. were found to be similar.
2024: DOI: 10.1021/acssuschem.eng. reactor to elucidate kinetic schemes and Escherichia coli – Escherichia coli (Chemie. Ing. Technik,
3C06052). T. Chaudhari et al have used softwood consortia carrying a CRISPR/dCas 9 2024: DOI: 10.1002/
determine rate constants. The infl uence interference system was engineered to cite.202300148).
of proton concentration on rate constants kraft lignin (KL) and carried out surface simultaneously use glucose and xylose
catalytic dehydration of sor- in this biphasic process was assessed. functionalisation through phosphoryla- cleavage yielding glyceraldehyde and
bitol (S) to isosorbide (IS) over (Chemie. Ing. Tech., 2024, May; DOI: tion, using P O , to give LP to engineer to support cell growth and produce glycolaldehyde intermediates, which Furfural (F)
pyruvate at 34.3 gm per litre pyruvate
2
5
sulphonated phenolic resins 10.1002/cite.202300163). a functional pigment for assessing its with a yield of 0.68 gm per gm sugar. were than oxidised to give GA & GCA.
with surface hydrophobic modi- inhibitory properties in epoxy-based anti- Subsequently, tyrosine phenol lyase and (ACS Catal., 2024,14, No. 10, 7609- recent catalytic innovations in
fi cation Eco-friendly biobased adhe- corrosive coatings. KLP was incorporated other biocatalytic enzymes were used 7623; DOI:10.1021/acscatal4C00782). F transformation
[IS is fi nding a lot of applications and S sives prepared from different into an amine-cured Bisphenol-A (BPA) to generate the GXP system and 20.8 uncovering challenges for K. Zhao et al referred to F to stand out
is available in large quantities.] polyester-type glucose with high epoxy coating with a dry fi lm thickness gm per litre of LT was produced from complete carbohydrate to bio- as one of the most promising platform
cross-linked structure 12.5 gm per litre phenol with a yield of ethanol utilisation in a reducing compounds derived from lignocellulosic
K. Zhang et al have reported the method 86.4%. Further, using the hydrolysate of catalytic fractionation (rcF) biomass. The conversion of F to furfuryl
of making the title catalyst with surface C. Li et al have worked on the title the raw material sorghum pith, 0.94 gm biorefi nery alcohol, gamma-valerolactone, penta-
hydrophobicity. 100% conversion of subject to have products which do not per litre LT was produced from 0.96 gm nediols, and nitrogen containing com-
S is reported with IS yield of 75.4%. use HCHO based adhesives. Thus, per litre p-Coumaric acid with a yield T. Nicolai et al have referred to the RCF pounds is covered. This review provides
(New Jl. Chem., 2024; DOI: 10.1039/ polybasic acid (PBA) and glucose were of 88.7%. (Green Chem., 2024: DOI: biorefi nery, which has been developed an in-depth understanding of catalysts,
D4nj00351A). used; phosphonic acid-glucose (PAG), 10.1039/D3GC05013K). for high quality lignin oil extraction systems, and mechanisms involved in

182 Chemical Weekly August 13, 2024 Chemical Weekly August 13, 2024 183

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