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Selective Hydrogenation of Hexanoic Acid to Hexanol Under Mild Conditions over Titania-Based Pt-Re Catalyst Conference attendances

Language Английский
Participant type Стендовый
Conference EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources”
30 Aug - 4 Sep 2015 , Казань
Authors Suknev Alexey Petrovich 1 , Zaikovskii Vladimir Ivanovich 1,2 , Kaichev Vasily Vasilievich 1,2 , Paukshtis Eugenii Aleksandrovich 1,2 , Sadovskaya Ekaterina Mikhajlovna 1,2 , Bal'zhinimaev Bair Sydypovich 1
Affiliations
1 Boreskov Institute of Catalysis SB RAS
2 Novosibirsk National Research University

Abstract: The Pt-ReOx species (x ≤ 1) of atomic dispersion were formed and stabilized on the titania surface. Their size, charge and chemical composition were characterized by means of HRTEM/STEM with EDX mapping, XPS, FTIR. It was shown these centers with Re:Pt = 2 are highly active and selective in hydrogenation of carboxylic acid to alcohol under very mild conditions (T = 110 C, P = 50 bar). The reaction rate constant for hydrogenation of hexanoic acid increased linearly with Pt content. As for Ru-NPy pair in homogeneous pincer-type complexes, the neighboring Pt-O atoms form a similar pair capable to dissociate H2 heterolytically with generation of Pt hydride to hydrogenate the carbonyl group of acid. Indeed, the TOF (40 h-1) and selectivity (99%) are approaching those of homogeneous catalyst. The first order kinetic model described well the kinetic data obtained in a wide range of reaction conditions.
Cite: Suknev A.P. , Zaikovskii V.I. , Kaichev V.V. , Paukshtis E.A. , Sadovskaya E.M. , Bal'zhinimaev B.S.
Selective Hydrogenation of Hexanoic Acid to Hexanol Under Mild Conditions over Titania-Based Pt-Re Catalyst
EuropaCat-XII: 12th European Congress on Catalysis “Catalysis: Balancing the use of fossil and renewable resources” 30 Aug - 4 Sep 2015