Improving the Catalytic Stability of Ni/TiO2 for Ethanol Guerbet Condensation: Influence of Second Metal Component

Li, Shuaiqi; Han, Xing; An, Hualiang; Zhao, Xinqiang; Wang, Yanji

doi:10.1134/s0023158421050025

Cited by 2 publications

(1 citation statement)

References 18 publications

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“…A variety of homogeneous catalysts have been studied for this transformation. − Jones et al were able to achieve 68% butanol selectivity utilizing a [(PNP)Mn(Br)(CO) 2 ] homogeneous catalyst in neat ethanol, and recently, the Jones group reported a 57% butanol selectivity with [( p -cymene)Ru(6,6′-bpy OH )Cl]Cl as their catalyst in an aqueous solvent system . A variety of heterogeneous catalysts for the Guerbet process involving commercial cobalt powder, metal oxides, − metal–organic frameworks, and hydroxyapatite − have also been reported with butanol selectivities of 70, 50, 99, and 75%, respectively. In a recent report, a homogeneous (NNN)Ru pincer catalyst was used to obtain 62% ethanol conversion with a 45% yield of n-butanol.…”

Section: Introductionmentioning

confidence: 99%

Ethanol Upgrading ton-Butanol Using Transition-Metal-Incorporated Poly(triazine)imide Frameworks

Cypher,

Pauly,

Castro

et al. 2023

ACS Appl. Mater. Interfaces

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The upgrading of ethanol to n-butanol was performed using a molecular catalyst integrated into a carbon nitride support, one of the first examples of a supported molecular catalyst performing the Guerbet process. Initial studies using crystalline poly(triazine)imide (PTI) with lithium or transition-metal cations imbedded in the support together with a base as the catalyst system did not produce any significant amounts of n-butanol. However, when using the catalyst material formed by treatment of PTI-LiCl with [(Cp*)IrCl2]2 (Cp* = pentamethylcyclopentadienyl) along with sodium hydroxide, a 59% selectivity for butanol (13% yield) was obtained at 145 °C. This PTI-(Cp*)Ir material exhibited distinct UV–vis absorption features and powder X-ray diffractions which differ from those of the parent PTI-LiCl and [(Cp*)IrCl2]2. The PTI-(Cp*)Ir material was found to have a metal loading of 27% iridium per empirical unit of the framework. Along with the formation of n-butanol from the Guerbet reaction, the presence of higher chain alcohols was also observed.

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