Ni-Al-Ti Hydrotalcite Based Catalyst for the Selective Hydrogenation of Biomass-Derived Levulinic Acid to γ-Valerolactone

Rambabu Gundeboina, Suresh Gadasandula, Vijay Kumar Velisoju, Naresh Gutta, Laxma Reddy Kotha, Hari Padmasri Aytam

Research output: Contribution to journalArticlepeer-review

18 Scopus citations

Abstract

Ni−Al-Ti mixed oxide derived from Ni−Al-Ti hydrotalcite precursor is identified as an efficient catalyst for the hydrogenation of levulinic acid (LA) to γ-valerolactone (GVL). This catalyst showed high active surface Ni sites due to a higher synergy in the mixed oxide formed from the hydrotalcite precursor. These results are further supported by X-ray diffraction analysis (XRD), electron spin resonance spectroscopy (ESR) and scanning electron microscopy (SEM) results. The higher activity of Ni−Al-Ti compared to Ni−Al, Ni−Ti catalysts was attributed to a high ratio of Lewis to Brønsted acid sites (LAS/BAS) observed from pyridine adsorption – DRIFTS results along with high surface Ni sites on the catalyst surface measured from CO-chemisorption studies. This contributed to the enhanced selectivity of the desired product, GVL over Ni−Al-Ti catalyst as compared to its individual counter parts, Ni−Ti and Ni−Al catalysts.
Original languageEnglish (US)
Pages (from-to)202-210
Number of pages9
JournalChemistrySelect
Volume4
Issue number1
DOIs
StatePublished - Jan 10 2019
Externally publishedYes

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Generated from Scopus record by KAUST IRTS on 2023-10-23

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