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

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

doi:10.1002/slct.201803407

Cited by 15 publications

(7 citation statements)

References 51 publications

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“…For the reduced NiMo/HTiMCM-41 catalyst, apart from the discussed peaks, the small peak at 852.9 eV corresponding to the Ni 0 species appears [58]. These results are in good agreement with earlier reports on the better susceptibility to the reduction of Ni species deposited over Ti-modified materials relative to Al-modified ones [59].…”

Section: Xpssupporting

confidence: 91%

Hydrodesulfurization of 4,6-Dimethyldibenzothiophene and the Diesel Oil Fraction on NiMo Catalysts Supported over Proton-Exchanged AlMCM-41 and TiMCM-41 Extrudates

et al. 2021

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NiMo catalysts supported on mesoporous MCM-41 type materials shaped with binder were tested for activity in the hydrodesulfurization of 4,6-dimethyldibenzothiophene (4,6-DMDBT) and the diesel fuel fraction (0.92 wt% of sulfur). The aim of the investigation was to evaluate the effect of ion exchange with protons of Al- or Ti-substituted MCM-41 mesoporous supports. The subjected catalytic systems were NiMo/HAlMCM-41 and NiMo/HTiMCM-41, and for comparison purposes NiMo/AlMCM-41 and NiMo/TiMCM-41. The samples were characterized by N2 sorption (at 77 K), XRD, TEM, XPS, SEM and Py–IR. It was found that the functionalization of AlMCM-41 and TiMCM-41 with protons increased the conversion of 4,6-DMDBT and the pseudo-first-order rate constant. Correspondingly, 4,6-DMDBT HDS reactions over the NiMo/HTiMCM-41 catalyst proceeded to a similar extent via hydrogenation and direct desulfurization, whereas over the NiMo/HAlMCM-41 they proceeded mainly via direct desulfurization. Furthermore, the ion-exchanged catalysts displayed two-fold higher efficiency in direct desulfurization than their non-modified counterparts. The NiMo/HTiMCM-41 catalyst exhibited the highest catalytic efficiency in the HDS of 4,6-DMDBT and the diesel oil fraction. The high activity of the NiMo/HTiMCM-41 catalyst is mainly attributed to its appropriate acidity, as well as the metal–support interaction providing both the high dispersion of the active phase and the desirable multilayered stacking morphology of the active phase slabs.

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Section: Xpssupporting

confidence: 91%

Hydrodesulfurization of 4,6-Dimethyldibenzothiophene and the Diesel Oil Fraction on NiMo Catalysts Supported over Proton-Exchanged AlMCM-41 and TiMCM-41 Extrudates

et al. 2021

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“…The generated core-shell structure was proved by TEM images, and the strong interactions between Co and Al species increased the stability of Co particles, making it robust against leaching and sintering. Similar work was also carried out by Aytam et al [72]. With a Ni-Ti hydrotalcite-derived catalyst, the quantitative yield of GVL was achieved at 280 °C.…”

Section: Catalytic Conversion Of La To Gvlsupporting

confidence: 69%

Recent Advances in the Catalytic Upgrading of Biomass Platform Chemicals Via Hydrotalcite-Derived Metal Catalysts

Zhang

Sun

Yuan

2022

Trans. Tianjin Univ.

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With the world’s fossil fuels being finite in nature, an increasing interest focuses on the application of alternative renewable resources such as biomass. Biomass-derived platform chemicals with abundant functional groups have the potential to replace bulk chemicals for the production of value-added chemicals, fuels, and materials. The upgrading of these platform chemicals relies on the development of efficient catalytic systems. Hydrotalcite, with its wide compositional variety, tuneable anion-exchange capacity, and controlled acidity/basicity sites demonstrates great potential in the catalytic upgrading of biomass and the derived platform chemicals. The past decade has witnessed the emergence of research achievements on the development of efficient and robust hydrotalcite-derived metal catalysts and their applications in the upgrading of biomass or the derived platform chemicals. In this review, we aim to summarize the recent advances on the catalytic upgrading of biomass-derived platform chemicals (e.g., furfural, 5-hydroxymethylfurfural, levulinic acid, and glycerol) via hydrotalcite-derived metal catalysts. We also observed that the crucial role of using hydrotalcite-derived catalysts relies on their strong metal–support interactions. As a result, a section focusing on the discussion of the metal–support interactions of hydrotalcite-derived catalysts was provided.

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“…The valorization of biomass and their derived feedstocks continues to be an important goal of chemical research for the sustainable production of advanced chemicals and materials. − Among sugar biomass-derived products, levulinic acid (LA) − represents renewable feedstock for the synthesis of value-added chemicals, fuels, and polymers as well as intermediates for pharmaceuticals and agrochemicals. − In particular, LA serves as a starting material for the production of γ-valerolactone (GVL), ethyl levulinate, 1,4-pentanediol, valeric esters, 2-methyl tetrahydrofuran, aminolevulinic acid, and other interesting compounds (Figure ). − Notably, catalytic hydrogenation of LA for the production of GVL constitutes an essential process because GVL is used as potential “green fuel” and as a starting material for the preparation of valuable chemicals. − For many years, numerous efforts have been made on this transformation by developing various catalysts. ,,− The majority of these catalysts are based on precious metals. ,,− In fact, the start-of-art-catalyst for this reaction is a ruthenium system. However, for the advancement of sustainable production of GVL, the development o...…”

Section: Introductionmentioning

confidence: 99%

“…However, for the advancement of sustainable production of GVL, the development of non-noble metal-based catalysts is highly desired. In this respect, Cr-, Fe-, Cu-, and Ni-based catalysts have been reported for the hydrogenation of LA to GVL. ,− In addition, very recently heterogeneous cobalt-catalyst was also disclosed that works at >200 °C . Next, CePO 4 –Co 2 P, a mixed oxide catalyst, was also known to catalyze the LA to GVL reaction .…”

Section: Introductionmentioning

confidence: 99%

Levulinic Acid Derived Reusable Cobalt-Nanoparticles-Catalyzed Sustainable Synthesis of γ-Valerolactone

Murugesan

Alshammari

Sohail

et al. 2019

ACS Sustainable Chem. Eng.

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The effective utilization of levulinic acid, a renewable feedstock derived from sugar biomass, is of central importance for the preparation of value-added chemicals as well as catalytic materials. Specifically, the production of γ-valerolactone, a key platform molecule, from levulinic acid represents one of the pivotal processes in converting lignocellulose-based biomass into renewable fuels and chemicals. Compared to synthetic valorization, the use of levulinic acid for the preparation of catalytically active nanomaterials is scarcely explored. Here, we report the use of levulinic acid for the preparation of cobalt-based nanocatalysts as well as for the synthesis of γ-valerolactone. The template synthesis of cobalt–levulinic acid on commercial silica and subsequent pyrolysis resulted in the formation of cobalt nanoparticles as highly active and selective catalysts for the hydrogenation of levulinic acid to γ-valerolactone under industrially viable and scalable conditions. Applying this optimal catalyst, other lactones starting from different oxo carboxylic acids have also been prepared in good to excellent yields. Synthetic and practical utility of this Co-based valerolactone synthesis protocol has been demonstrated by performing synthesis on the scale of 20 g and recycling of catalyst.

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

Cited by 15 publications

References 51 publications

Hydrodesulfurization of 4,6-Dimethyldibenzothiophene and the Diesel Oil Fraction on NiMo Catalysts Supported over Proton-Exchanged AlMCM-41 and TiMCM-41 Extrudates

Hydrodesulfurization of 4,6-Dimethyldibenzothiophene and the Diesel Oil Fraction on NiMo Catalysts Supported over Proton-Exchanged AlMCM-41 and TiMCM-41 Extrudates

Recent Advances in the Catalytic Upgrading of Biomass Platform Chemicals Via Hydrotalcite-Derived Metal Catalysts

Levulinic Acid Derived Reusable Cobalt-Nanoparticles-Catalyzed Sustainable Synthesis of γ-Valerolactone

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