Roles of N on the N-doped Ru/AC catalyst in the hydrogenation of phthalate esters

Zhao, Yi-Fan; Li, Wensi; Rehman, Mooeez Ur; Wang, Shengping; Li, Guobing�; Xü, Yao

doi:10.1007/s11164-022-04730-9

Cited by 3 publications

(1 citation statement)

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“…A Ni/MMT-AE catalyst synthesized using an evaporative ammonia method was reported by Nie et al 17 The nickel species with a mean particle size of 4.1 nm on the catalyst were well dispersed, which was an important factor for the catalyst to exhibit high activity in DOP hydrogenation reaction. Zhao et al 18 found that N-doping could increase the binding sites of ruthenium, while pyridine groups promoted the adsorption of intermediate product bis (2-ethylhexyl) cyclohexene-1,2-dicar-boxylate on the active site of the catalyst. According to these studies, metal-based catalysts with uniform metal dispersion and small metal particle size usually perform better in hydrogenation.…”

Section: Introductionmentioning

confidence: 99%

Ultrauniform Ru Nanoclusters as Efficient Hydrogenation Catalysts for Phthalates

Sun

et al. 2023

Ind. Eng. Chem. Res.

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Cyclohexane dicarboxylic acid (CHDA) ester, a kind of environmental-friendly plasticizer, can be produced by phthalates hydrogenation. However, the synthesis of catalysts with high activity and selectivity is a challenge due to the stability of aromatic rings. In this work, a series of ultrauniform Ru nanoclusters supported by γ-Al2O3 are synthesized for the hydrogenation of diisononyl phthalate (DINP). Results show that the conversion of DINP and the selectivity of diisononyl-cyclohexane-1,2-dicarboxylate (DINCH) both reach 100% at 140 °C and 3 MPa H2 pressure. Diisononyl-cyclohexene-1,2-dicarboxylate (4H-DINP) and 1,2-cyclohexanedicarboxylate-7-methyloctyl ester are found; the hydrogenation reaction network of DINP is constructed. Alkali metal ions adsorbed on the surface of Ru nanoclusters prepared by the polyol method can stabilize Ru3+-Hδ− species by electrostatic interaction, thus affecting the hydrogenation activity of the catalyst, following the order of Li+ > Na+ > K+ > Cs+. Ru-based catalysts prepared by the polyol method have good prospects for application in phthalates hydrogenation.

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Section: Introductionmentioning

confidence: 99%