Page 173 - CW E-Magazine (8-10-2024)

Special Report Special Report

Preparation of a magnetic solid lisation using mixed metal oxides and on catalysts. Various biomass conversion increasing to 1923 MPa (from 456 MPa) reviewed and key economic factors are lysts having Bronsted acid (BA) sites
acid Fe O @PS-SO H for a simple regeneration via calcinations routes are covered and this includes and 19 MPa (from 10 MPa), respec- discussed and what is hindering their and a bifunctional catalyst containing
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hydrolysis of cellulose (C ) is proposed. TEA was done and this lignin and cellulose. Opportunities and tively. There was a dramatic reduction application. (Green Chem., 2024: DOI: phosphate group were prepared. Sul-
[Hydrolysis of C is of considerable product is cheaper than synthetic poly- challenges are discussed. (Green Chem., in water vapour permeability by 92.9% 10.1039/D3GC05108K). phonated hydrochar gave 30% yield
importance and this column has covered alpha-olefi n (usually trimer of n-decene). 2024: DOI: 10.1039/D4GC01541J). and O permeability by 74%. The fi lm and even high loading of SCM could
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many papers.] (Green Chem., 2024; DOI:10.1039/ was biodegradable. (ACS Sus. Chem. A fungus converts cellulose (C) be used. The catalysts get fouled after
D4GC01721). Novel diacid – superbase ionic Eng., 2024: DOI: 10.1021/acssusche- directly into platform chemicals fi rst use and indicating the necessity of
M. Liu et al have come out with a mag- liquids (DSILs) for efficient meng.4C04198). purifi cation of SCM prior to catalytic
netic version of the acid catalyst, which Water-assisted ketonisation dissolution of cellulose (C) G. Ondrey has reported the discovery valorisation. (Catalysis Today, 2024,
allows easy separation through High of methyl palmitate (MP) to and simultaneous preparation Glycerol (G) and its deriva- of this method for converting C into en- 441, 1 Nov., 114898; DOI:10.1016/j.
Gradient Magnetic Separation (HGMS). palmitone (P) over metal incor- of multi-functional cellulose tives as potential C-3 bio-based antiopure erythro-isocitric acid – a chiral cattod.2024.114898).
Here, the authors have fi rst modifi ed the porated TiO catalysts materials building blocks for accessing
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[Rayon manufacture via dissolution APIs
J. Pittayatornkul et al have worked on of C in N-Methylmorpholine has been
the title process using noble metal incor- commercial for a long time.] R. Morodo et al have reviewed the title
porated TiO catalysts in the presence of subject. Aspects of entities treating
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water under an atmosphere of H /N fl ow. L. Zhang et al have worked on develop- cardiovascular diseases, musculo-
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ing green solvents for C, which is still skeletal drugs, etc. are reviewed. Further,
a challenge. DSILs maximally dissolve polymeric drugs and more eclectic
15.2 wt% of microcrystalline C (DP =
260) and 9.3 wt% of cotton wool (DP =
685), respectively. The above ILs can be
surface of magnetite (Fe O ) nanopar- recycled and reused to dissolve C. The isomer of citric acid, which has a large Aromatic epoxy from caffeic
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ticles (NPs) into oleic acid and then in rheological properties of the C solutions potential as a chemical building block. acid (CA) (CAAE)
an oil-in water (o/w) emulsion system were studied for fibre spinning. The (Paper in ACS Sus. Chem. Eng., quoted
st
polystyrene was coated and sulphonated, Hydrolysis of MP to palmitic acid occurs tensile strength of 2.39 MPa and 2.28 in Chem. Eng, 1 July, 2024). S. Wang et al have reported the title
which was characterised by all important which undergoes ketonisaton. Water in MPa for wood and bamboo boards were substrates such as dietary supplements, epoxy resins with different cross-linking
spectroscopic methods. At 140°C and the feed suppresses hydrodeoxygenation realised. The regenerated C fi lms show radiosensitisers or chemotherapeutical Catalytic valorisation of indus- densities, such as CFAE GEFA and
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1:1 acid to substrate ratio, C gave glu- and P cracking. At 400°C, 0.5 Pd/TiO structural integrity, dense morphology, agents are considered. This brings out trial grade sugarcane molasses CFAE FD , can be obtained from CFAE
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cose yield of 64%. The catalyst can be gave 90% conversion with 85%+ selecti- 2 a high degree of crystallinity, excellent the importance of biobased starting (SCM) to 5-hydroxymethylfur- through Diels-Alder reaction with Glyci-
conveniently recycled. (J. Chem. Tech- vity to P. (Reaction Chem. Eng., 2024: tensile strength of 1.34 MPa, suffi cient materials. (Green Chem., 2024: DOI: fural (HMF) in water dyl Ether of Furfuryl Alcohol (GEFA)
nol. Biotechnol., 2024; DOI:10.1002/ DOI: 10.1029/D4RE00111G). thermal stability, and excellent trans- 10.1039/D4GC01957A). and 2-difuran disulphide (FD), followed
jet. 7696). parency. Even C gel was incorporated K.M. Eblagon et al have reported that by curing with 4,4′-diaminodiphenyl-
into a Zn-ion hybrid supercapicitor.
Catalyst-free valorisation of bio- Role of advanced oxidation SCM is a suitable feedstock for HMF methane (DDM). The tensile strength
Ketonisation of fatty acids mass resources to value-added (Green Chem., 2024: DOI: 10.1039/ processes in lignocellulose production in water. Cheap mono- and ranges from 73.8 to 106.5 MPa, much
D4GC02083A).
bifunctional sugar catalysts were pre-
pre-treatment towards bio-
Process intensifi cation of lauric products refi nery applications pared via hydrothermal carbonization higher than bisphenol A diglycidyl ether-
based epoxy/DDM (56.6 MPa).
acid self-ketonisaion and its Biodegradable starch-based (HTC). 30 wt% HMF yield was realised
economic and environmental W. Zhao et al have reviewed the title nanocomposite films with A.D. Fraia et al have referred to the from the crude SCM. A variety of cata-
subject, which is superior to that based
impact on bio-lubricant base oil exceptional water- and oxygen- effi cient utilisation of lignocellulosic
production barrier properties biomass being limited by the recalci-
trance of cell walls, mainly caused by
T. Goculdas et al have brought out the M. Dong et al have overcome some defi - hemicellulose and lignin which reduce
advantages of bio-lubricants derived ciencies such as mechanical weakness accessibility to cellulose. Oxidative
from fatty acids based on coconut/palm and permeability to moisture and gases processes effi ciently enhance the digesti-
kernel oils. This was accomplished of starch by using Mxene nanoparticles bility of cellulose in the biomass, which
in a continuous fl ow reactor with an to signifi cantly enhance these properties. make it more accessible for subsequent
exceptional selectivity of 90%. Thus 10% Mxene was incorporated into starch enzymatic or microbial degradation.
12-tricosanane is obtained with easily fi lms and this resulted in raising the Further, reaction kinetic is improved.
available MgO catalyst. Catalyst stabi- Young’s modulus and tensile strength Aspects of oxidative pretreatments are

172 Chemical Weekly October 8, 2024 Chemical Weekly October 8, 2024 173

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