Page 183 - CW E-Magazine (12-11-2024)

Special Report Special Report

butions are covered. Use of alkenes even a signifi cant loss of microporous Zr-modifi ed Cs/SiO catalyst bonds and abstract the carbon atoms pyrolysis has shown results. Com- S. Hao et al have reported high yields
2
from naphtha cuts is covered. The use of domains and intrinsic acidity during for synthesis of methyl acry- from these wastes into valuable chemi- parison has been made with homo- via adopting the title strategy and this
long chain feedstocks is covered. (Cata- desilication. A novel and simple late (MA) via aldol conden- cals and fuels. These authors have geneously catalysed hydroformylation is fi rst application of noble metal Pd
lysis Today, 2025, 443, 1 Jan, 114969; methodology is reported to avoid the sation of methyl acetate with summarised recent advances in CO reactions. (Chemie Ing. Technik, 2024; in the oxidation reaction of cumene.
st
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DOI:10.1016/j.cattod.2024.114969). above problem. The pre-impregna- HCHO and C-radical mediated photocatalytic DOI: 10.1002/cite.202400017). Even at C conversion of 52%, 92%
ted amines in zeolite micropores act cracking of NBPs. Challenges and selectivity was realised. High loading
Al-Cs/SiO catalyst for methyl as inner pore-directing agents to re- S. Deng et al have studied the effect future directions are given. (Angew. Recent advances of Mo-based of Pd, also as nanoparticles, leads to
2
methacrylate (MMA) synthesis tain zeolitic structure. The zeolites so of Zr precursor, textural structure, and Chem. Intl. Ed., 2024; DOI: 10.1002/ catalysts for synthesising higher the decomposition of CHP. (Molecular
via one-step aldol condensation obtained have the desired properties. acid-base properties on the catalytic acti- anie.202407464). alcohols from syngas Catalysis, 2024, 568, Nov., 114490;
(Angew. Chem. Intl. Ed., 2024; DOI: vity. Catalysts were thoroughly charac- DOI:10.1016/j.mcat.2024.114490).
R. Ran et al have worked on the route 10:1002/anie.202411446). terised. The selectivity of MA was Manganese oxide decorated R. Yangbin et al have studied the
for MMA, which is based on the aldol Co nanoparticles on CaTiO infl uence of alkali metals on the perfor- Selective oxidation of CH +
4
3
condensation of propionaldehyde Hydrogenation of nitro- for higher alcohols synthesis mance of Mo-based catalysts. Further, HCHO + CO over V/MSN cata-
with HCHO. Supported Cs-based cat- benzene (NB) to aniline (A) from syngas the effect of transition metals on the lysts with isolated VO sites
4
alysts are considered, but they suffer [This column has covered several performance of Mo-based catalysts was [Valorisation of CH continues to
4
from low activity. These authors papers on the F-T process to be operated also studied. In addition, the effect of attract a lot of attention and this
loaded different amounts of Al on A multi-scale modelling approach has in petrochemical mode to get olefi ns, metal oxide carriers and carbon carriers column has given justice to this topic.]
the above catalyst and character- been reported; this work was under- alcohols, etc.] on catalyst performance was studied.
ised the catalyst, besides doing DFT taken in view of its importance (i.e., J. Song et al have stressed that the gene-
of hydrogenation) in pharma industry. This review has made a comprehensive ration of highly dispersed isolated
This liquid phase exothermic reaction R. Liu et al have prepared study and the current status is pointed active sites is crucial for realising the title
was taken as a model reaction. Model CaTi 0.7-x Co Mn O (x = 0-0.4) cata- out. (Molecular Catalysis, 2024, objective. Thus these authors have used
3
x
0.3
was able to reproduce the temperature lysts with perovskite structure to 568, Nov. 114508; DOI:10.1016/j. mesoporous silica nanoparticles (MSN)
profi les in the case of a scale-up. This enhance alcohol products selectivity. The mcat.2024.114508). as supports and have adopted grafting
paper demonstrates the fl exibility and
predictive power of this type of model- Photorefi nery of biomass and
calculations. This strategy leads to ling. (Ind. Eng. Chem. Res., 2024; DOI: 93.5% with a yield of about 45% plastics to renewable chemi-
cals using heterogeneous
improvement in the catalyst. (Ind. 10.1021/acs.iecr.4c00318). under optimal conditions. In situ DRIFTS
Eng. Chem. Res., 2024; DOI: 10.1021/ experiments were done. The activation catalysts
acs.iecr.4c01488). Ru-based catalyst for decom- energy of this reaction is 65.0 kJ/mol.
position of NH (Ind. Eng. Chem. Res., 2024; DOI: S. Feng et al have worked on photo-
3
Constructing hierarchical [NH is emerging as a H carrier and 10.1021/acs.iecr.4c00771). regulation of Mn and Co is given in the catalytic conversion of biomass and
3
2
zeolites with highly complete already turbines are working burning paper. Finally, the CaTi Co Mn O plastic waste to get sustainable fuel and method to prepare the desired title cata-
0.3
0.4
lysts. This work reports the total selec-
3
0.3
framework via controlled NH . When H is required then NH 3 Photocatalytic cracking of catalyst gave the best performance, chemical production. Heterogeneous tivity of HCHO + CO as higher than
3
2
o
desilication has to be decomposed to N +H . This non-biodegradable plastics giving selectivity of 38.6% at 270 C for photocatalysts, typically composed of about 83%. The highest HCHO yield
2
2
column has covered some papers on (NBPs) to chemicals and fuels alcohols with higher alcohols constitut- semiconductors with distinctive redox o
X. Zhu et al have worked on the sub- this subject.] ing 70.0wt%. (Ind. Eng. Chem. Res., properties in their conduction band at 670 C was 3.7%. (Applied Catalysis
ject to avoid uncontrolled destruction K. Su et al have mentioned that photo- 2024; DOI: 10.1021/acs.iecr.4c02625). (CB) and valence band (VB) facilitate A: General, 2024, 686, 25 Oct. 119928;
of zeolitic framework, along with W. Yan et al have referred to Ru-base both the oxidative and reductive valori- DOI:10.1016/j.apcata.2024.119928).
catalysts, which feature an intrinsic acti- catalytic cracking can cleave inert C-C Bridging homogeneously and sation of organic feedstocks. (Angew. Highly selective synthesis of
vity towards the title reaction. These heterogeneously catalysed Chem. Intl. Ed., 2024; DOI: 10.1002/ acetic acid (AA) from hydroxyl-
authors have worked on the inter- higher-alcohol synthesis via anie.202408504). mediated oxidation of CH
facial regulation of Ru catalysts by TiO Co-based catalysts at low temperatures 4
2
via strong metal-support interactions Selective oxidation of cumene
(SMSI) that allows these catalysts higher P. Telaar et al have worked on hydro- (C) with highly dispersed Pd B. Wu et al have reported a zeolite-sup-
turnover frequency of H production genation of CO to higher alcohols on Ca-Al layered double ported Au-Fe catalyst (Au-Fe/ZSM-5),
2
which is 2-fold higher than Ru/SiO and have summarised the established hydroxide which converted CH to AA with O as
2
4
2
catalysts. DFT calculations were done. and well-investigated Co-based cata- [Oxidation of C to cumene hydroper- an oxidant in the presence of CO. Au
SEM images of SSZ-13 zeolites treated with Interfacial regulation does provide an lysts and the mechanism which lead to oxide (CHP), in turn cleavage to phenol nanoparticles catalysed the formation
pure NaOH solution under standard conditions effi cient strategy. (ACS Sustainable oxygenate formation. In the recent past + acetone, is practiced on multimillion of hydroxyl species from the reaction
(0.2 M, 70 °C, 30 min). (a) As-syn SZ21-
AT(0.2), (b) SZ21-AT(0.2), (c) SZ41-AT(0.2), Chem. Eng., 2024; DOI: 2021/acssus- a Co-based system derived from Mn- tons per annum scale (>25-mtpa) and of CO, O , and H O; ZSM-5-suppor-
2
2
(d) SZ54-AT(0.2). chemeng.4c03829). Co-based Prussian blue analogues by the selectivity to CHP is of importance.] ted atomically dispersed Fe species than
182 Chemical Weekly November 12, 2024 Chemical Weekly November 12, 2024 183
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