Page 186 - CW E-Magazine (13-8-2024)

Special Report

state NMR. Selectivity was over 90%. the cost is an adverse factor. (ACS as catalysts. Work was also done for C-7
(ChemSusChem, 2024: DOI: 10.1002/ Omega, 2024: DOI: 10.1021/acso- to C-12 primary alcohols. Hf(IV) and
cssc.202400647). mega.3C04651). Ti(IV) trifl ates gave highest conversion
with alkene yields of more than 70%, at
Selective transformation of Modifying of magnetic uio- 140-180°C. (Green Chem., 2024: DOI:
5-hydroxymethylfurfural 66-nH as a new nanosorbent 10.1039/D4GC01038H).
2
(HMF) to 3-hydroxymethyl- by thermo-alkaline-hydrolysis
cyclopentanone (HMcP) over technology for highly effi cient 2,3-Pentanedione (Pd) from
ni catalysts enrichment of and determina- lactic acid (LA)
tion of quercetin in apple peel N. Dhiman et al have reported the title
M.V. Morales et al have discussed the conversion using ZrO (Polymorphic)
2
critical factors which affect the title R. Chang et al have reported that mag- as the catalyst. This catalyst exhibits
transformation. Ni was supported on netic UIO-66-NH -MH 0.05 has higher high selectivity, activity and stability
2
different carbon supports and metallic adsorption than the title adsorbent and for the title reaction. 95.5% selectivity
has also signifi cantly higher magnetic is reported at 325°C. (Green Chem.2024:
properties. The maximum capacity was DOI: 10.1039/D4GC02097A).
65.30 mg per gm. Even after 7 cycles
96.3% adsorption capacity was realised. Selective hydrodeoxygenation
(Sepn. Purfn. Technol., 2024: DOI: of furfural (F) to 2-methylfuran
10.1016/j.seppur.2024.128054, 353, (MF)
partA, Jan.2025, 128054).
Y. Yao et al have worked on the title
oxides with different structure and ac- Sustainable upgrading of glyce- process which involves a concerted
id-base properties. Testing was done in rol (G) into glycidol (Gd) and combination of hydrogenation and
a batch stirred reactor and competing its derivatives under continu- hydrogenolysis. Highly dispersed MoP
reactions are discussed. It seems Ni/ ous-fl ow conditions catalysts, supported on SiO , was used
2
ZrO catalyst gives a selectivity of 73%; and at full conversion of F, 96.3% selec-
2
Ni/HSAG-ox gives 87% selectivity. A. Sivo et al have reported the title tivity to MF was realised at 120°C, 1.0
(ChemSusChem., 2024; DOI:10.1002/ process which can be easily integrated MPa (20% MoP/SiO ) in a continuous
2
cssc.202400559). with downstream synthetic steps to fi xed bed reactor. (Ind. Eng. Chem. Res.,
2023: DOI: 10.1021/acs.iecr.3C02804).
orange mesocarp extract
(oME) as a natural surfac- upgradation of AquaSolv omni
tant: Impact on fl uid-fl uid and (AqSO) biorefi nery: access to
fl uid-rock interactions during highly ethoxylated lignins (ELs)
chemical fl ooding in high yields through reactive
produce value-added derivatives. Sus- extraction
A.A. Obuebite et al have referred to the tainability of this process is discussed.
use of surfactant fl ooding for secondary/ (Green Chem., 2024: DOI: 10.1039/ D. Rigo et al have worked on the title
tertiary recovery of oil from depleted D4GC01565G). method for valorising lignins (from
fi elds. These authors have used OME as biomass) which involves simultaneous
a potential green surface-active agent. catalyst screening for dehydra- functionalisation and extraction. Hydro-
The extract is obtained from the orange tion of primary alcohols from thermally treated wood solids were
mesocarp using alkaline water as solvent renewable feedstocks under refl uxed with EtOH : H O mixtures (70-
2
and was characterised through FTIR. formation of alkenes at energy- 99 v/v %) in the presence of catalytic
Stability at 100°C and compatibility saving mild reactions amounts of H SO (c=0.15 to 1.2 M).
2
4
with divalent ions was checked. Micro- Ethoxylated Ls were obtained in 27-52 %
emulsion system was characterised. An A. Allahveroiyev et al have reported yields; degree of substitution was up to
additional oil is reported which shows the conversion of 1-hexanol to 1-hexene, 40.8 ETO groups/100 Ar. (Green Chem.,
its utility. Field testing was done, but using Lewis acids such as metal trifl ates 2024: DOI: 10.1039/D3GC03776B).

186 Chemical Weekly August 13, 2024

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