The catalytic decarbonylation of aldehydes using iron porphyrin complexes

Belani, Ramesh M.

doi:10.14288/1.0060600

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2023

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“…However, 13 C NMR spectra of PE-5 and PE-10 do not indicate the presence of the CC bond (Figures S9 & S10). Iron porphyrins were found to catalyze the decarbonylation of C n -aliphatic aldehyde to yield C n‑1 -alkane via an acyl-metal intermediate that can be decarbonylated yielding an alkyl radical that can perform a radical transfer . Direct decarbonylation of ketones has also been reported with similar transition-metal cations (Rh, Ru, Pd, and Ni); however, it is unlikely that an unstrained aliphatic ketone in this case could be decarbonylated without chelation assistance .…”

Section: Resultsmentioning

confidence: 84%

Mechanocatalytic Oxidative Cracking of Poly(ethylene) Via a Heterogeneous Fenton Process

Nguyen

Chang

Phillips

et al. 2023

ACS Sustainable Chem. Eng.

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In this work, mechanocatalytic oxidative cracking is used to overcome the chemical inertness of poly(ethylene) (PE) and the difficulties associated with processing this solid feedstock. An Fe 2 O 3 -based Fenton system is applied to introduce oxygen-based functional groups to the PE backbone with hydrogen peroxide as the oxidant. Once an oxygen-based functional group is introduced, the polymer chain can be cleaved to achieve cracking effectivity, with only CO, CO 2 , O 2 , and H 2 O as byproducts. The resulting fragments can be used as intermediates to produce fuels and sustainable chemicals.

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Section: Resultsmentioning

confidence: 84%