Page 176 - CW E-Magazine (28-5-2024)

Special Report

an ANN-based methods to model
vinyl-bridged PCCP/Cr active species.
Details for the methodology are repor-
ted. The optimised ANN-based models –
ANN-H and ANN-OT respectively for
1-hexene and 1-octene – are reported.
The optimised catalyst gave about
68% selectivity for 1-octene. (J. Cata-
lysis, 2024, 429, Jan. 115237; DOI:
10.1016/j.jcat.2023.115237).

BF /HY as microporous solid
3
acid catalyst for regioselective
SBA-15 as catalyst for the title reaction The addition of Fe and Zn into the above ring-opening of epoxides to alde-
and this was made via co-impregnation catalyst led to significant improvements. hydes
method. Here, butene-1 and butene-2 [This process has attracted a lot of atten-
could be used in a fixed bed reactor. The tion for several years and if success- Y-X. Yao et al have synthesised a
catalyst with 14 wt% Ni-10 wt% Bi-O/ ful it will bring a paradigm change.] supported BF /HY with a uniform disper-
3
SBA-15 gave butene-2 conversion of (ACS Catal. 2024, 14, No.1, 292-298; sion of BF . This catalyst has Brons-
3
83% and BD selectivity of 89% at 400 C DOI:10.1021/acscatal.3c04603). ted acidity and different alkyl- and aryl
o
and O /C = ratio of 4.0 mol/mol. (Ind. substituted aldehydes could be obtained
2
4
Eng. Chem. Res., 2023; DOI: 10.1021/ Highly efficient PCCP/Cr(III) with exceptional yields and selectivity.
acs.iecr.2c03267). ethylene tetramerisation cata-
lyst designed using artificial
Hydrotalcite-based bimetallic neural network (ANN) ap-
PdNi catalysts with high sulphur proach
tolerance for the hydro- [Octene-1 has many useful properties
genation of dicyclopentadiene as comonomer for polymerisation of
(DCPD) resin ethylene to give polyethylene having
desirable properties. Alpha olefins
Z. Bai et al have reported the title process gives the entire range; proces-
reaction to further improve the DCPD ses exist to make selectively butene-1
resin in terms of weather resistance, (including some plants in India) and This catalyst can be easily separated
stability, and compatibility. The title Chevron has selective trimerisation to and recycled. (Reaction Chem. Eng.;
catalyst is able to resist presence of hexene-1.] DOI: 10.1039/D3RE00387F).
sulphur. Pd Ni -MgAlO-HT catalyst gives H. Fan et al have mentioned that the
1
1
91.5% saturation at 255 C, 10 MPa H current theoretical calculation tech- Acetone hydrogenation at
o
2
pressure, in the presence of 50 ppm niques can help in an effective way room temperature on Ru-Sn/C
sulphur compound. (Ind. Eng. Chem. Res., to accelerate the design of molecular catalyst
2023; DOI: 10.1021/acs.iecr.2c04663). catalysts to make octene-1 selectively.
Transition-metal-promoted These authors have used DFT and Z. Yang et al have come out with a
potentially very useful catalyst, which
Cu-SSZ-13 catalysts for con- works at room temperature. The cata-
tinuous selective oxidation of lytic properties can be varied via atomic
CH to CH OH using mole- ratio of Sn to Ru. This catalyst also
4
cular O 3 works for 4-heptanone. 100% conversion
2 of acetone with 100% product selecti-
Y. Deng et al have reported that Chaba- vity to isopropyl alcohol is reported.
zite-type Cu-SSZ-13 zeolites catalyse the (Catalysis Commun., 2024, 186, January,
continuous selective oxidation of CH to 106822; DOI: 10.1016/j.catcom.
4
CH OH under mild conditions using pure O . 2023.106822).
3 2
176 Chemical Weekly May 28, 2024

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