Fischer-Tropsch process in a three-phase system over iron-cobalt catalyst nanoparticles in situ synthesized in a hydrocarbon medium

The synthesis of α-pinene oxide mediated by Novozym 435 (lipase from Candida antarctica) in a three-phase system was studied in this work. Novozyme 435 catalysed the formation of peroxyoctanoic acid directly from octanoic acid and hydrogen peroxide, which was then applied for in situ oxidation of α-pinene. The highest conversion of a-pinene (approximately 80%) was obtained when the reaction was performed at 30°C and initial hydrogen peroxide concentration in the water phase was set to be 30%. The parameters affecting the lipase activity were also investigated，where the peracid generated in organic phase was obvserved to greatly inactivate the enzyme compared to other components in the organic phase.

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Fischer-tropsch synthesis in a three-phase system over nanocatalysts (review)

Petroleum Chemistry ◽

10.1134/s096554411102006x ◽

2011 ◽

Vol 51 (2) ◽

pp. 74-85 ◽

Cited By ~ 15

Author(s):

S. N. Khadzhiev ◽

A. Yu. Krylova

Keyword(s):

Tropsch Synthesis ◽

Phase System ◽

Fischer Tropsch ◽

Fischer Tropsch Synthesis ◽

Three Phase

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Influence of dispersion medium composition on Fischer—Tropsch synthesis in three-phase system in the presence of iron-containing catalysts

Petroleum Chemistry ◽

10.1134/s0965544115070087 ◽

2015 ◽

Vol 55 (7) ◽

pp. 537-541 ◽

Cited By ~ 7

Author(s):

M. V. Kulikova ◽

A. Kh. Al Khazradji ◽

O. S. Dement’eva ◽

M. I. Ivantsov ◽

V. R. Flid ◽

...

Keyword(s):

Dispersion Medium ◽

Medium Composition ◽

Tropsch Synthesis ◽

Phase System ◽

Fischer Tropsch ◽

Fischer Tropsch Synthesis ◽

Three Phase

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A cross-dehydrogenative C(sp3)−H heteroarylation via photo-induced catalytic chlorine radical generation

Nature Communications ◽

10.1038/s41467-021-24280-9 ◽

2021 ◽

Vol 12 (1) ◽

Author(s):

Chia-Yu Huang ◽

Jianbin Li ◽

Chao-Jun Li

Keyword(s):

Hydrogen Atom ◽

Hydrogen Evolution ◽

Alkyl Radical ◽

Cobalt Catalyst ◽

Alkylation Reaction ◽

Hydrogen Atom Abstraction ◽

Dehydrogenative Coupling ◽

Radical Generation ◽

Limited Scope

AbstractHydrogen atom abstraction (HAT) from C(sp3)–H bonds of naturally abundant alkanes for alkyl radical generation represents a promising yet underexplored strategy in the alkylation reaction designs since involving stoichiometric oxidants, excessive alkane loading, and limited scope are common drawbacks. Here we report a photo-induced and chemical oxidant-free cross-dehydrogenative coupling (CDC) between alkanes and heteroarenes using catalytic chloride and cobalt catalyst. Couplings of strong C(sp3)–H bond-containing substrates and complex heteroarenes, have been achieved with satisfactory yields. This dual catalytic platform features the in situ engendered chlorine radical for alkyl radical generation and exploits the cobaloxime catalyst to enable the hydrogen evolution for catalytic turnover. The practical value of this protocol was demonstrated by the gram-scale synthesis of alkylated heteroarene with merely 3 equiv. alkane loading.

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