Selective and high yield transformation of glycerol to lactic acid using NNN pincer ruthenium catalysts

Dutta, Moumita; Das, Kanu; Prathapa, Siriyara Jagannatha; Srivastava, H. K.; Kumar, Akshai

doi:10.1039/d0cc02884c

Cited by 32 publications

(47 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Further, the effect of base was also investigated by performing the catalytic dehydrogenation of glycerol in the presence of different bases such as NaOH, KOH, Na 2 CO 3 , K 2 CO 3, and KO t Bu at 110 °C, where NaOH outperformed over others (Table 2). According to the previous literature reports, KOH also exhibited good conversion of glycerol [47,56–61] . In the optimized reaction conditions, high efficiency was observed with NaOH for the release of hydrogen gas from glycerol (0.96 equiv.…”

Section: Resultssupporting

confidence: 62%

“…According to the previous literature reports, KOH also exhibited good conversion of glycerol. [47,[56][57][58][59][60][61] In the optimized reaction conditions, high efficiency was observed with NaOH for the release of hydrogen gas from glycerol (0.96 equiv. of H 2 gas per mol of glycerol with 86 % conversion) as compared to KOH (0.4 equiv.…”

Section: Chemcatchemmentioning

confidence: 99%

“…[54] Although there are several reports for the catalytic conversion of glycerol to lactic acid, but most of these catalytic reactions were carried out at a higher temperature (> 140 °C) and/or in the presence of gases (N 2, and ethylene) or vacuum. [47,48,55] A few molecular catalysts based on Ir, [56][57][58][59] Ru, [60,61] and Fe [62] have also been explored for the transformation of glycerol to lactic acid with the production of hydrogen gas in the temperature range of 115 °C-180 °C.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Selective Hydrogen Production from Glycerol over Ruthenium Catalyst

et al. 2022

View full text Add to dashboard Cite

Glycerol – one of the prominent by‐products of biodiesel is also an important source of hydrogen gas. Herein, the efficient and selective production of hydrogen gas from glycerol in water at 90–120 °C over a ruthenium nanoparticle (∼2.7 nm) catalyst is demonstrated. Notably, high yield of hydrogen gas (n(H2)/n(glycerol); 0.96–1.61) was achieved from the glycerol‐water solution, where the reaction temperature and base concentration played crucial role in achieving high yield of H2. Advantageously, under the studied reaction conditions, the ruthenium catalyst also exhibited appreciably high long‐term stability for over 36 h while generating ca. 70 L H2 per gram of Ru with H2 yield of 350 L per L of glycerol. Moreover, high yield for lactic acid is also achieved during the production of hydrogen gas from glycerol.

show abstract

Section: Resultssupporting

confidence: 62%

Section: Chemcatchemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Selective Hydrogen Production from Glycerol over Ruthenium Catalyst

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Pincer-type metal complexes are an indispensable class of catalytic materials for a variety of chemical transformations. A plethora of pincer-type ligand-based transition-metal complexes have been used as catalysts for the hydrogenation of various functional groups. − One of the notable pincer-type complexes is the commercially available Ru-Macho complex, which is a highly robust catalyst for several transformations, including the reduction of carbon dioxide, ester, and carbonyl compounds, as well as the dehydrogenation of amines, alcohols, and formic acid. ,− …”

Section: Introductionmentioning

confidence: 99%

Direct Heterogenization of the Ru-Macho Catalyst for the Chemoselective Hydrogenation of α,β-Unsaturated Carbonyl Compounds

2021

View full text Add to dashboard Cite

In this study, a commercially available homogeneous pincer-type complex, Ru-Macho, was directly heterogenized via the Lewis acid-catalyzed Friedel–Crafts reaction using dichloromethane as the cross-linker to obtain a heterogeneous, pincer-type Ru porous organometallic polymer (Ru-Macho-POMP) with a high surface area. Notably, Ru-Macho-POMP was demonstrated to be an efficient heterogeneous catalyst for the chemoselective hydrogenation of α,β-unsaturated carbonyl compounds to their corresponding allylic alcohols using cinnamaldehyde as a model compound. The Ru-Macho-POMP catalyst showed a high turnover frequency (TOF = 920 h–1) and a high turnover number (TON = 2750), with high chemoselectivity (99%) and recyclability during the selective hydrogenation of α,β-unsaturated carbonyl compounds.

show abstract

“…Meanwhile, the above strategy for relative energy calculations has been demonstrated to be able to give rational explanations for experimental results. [88][89][90][91] Thus, we believe the selected computational method in the present work should be suitable and reliable for investigations of the studied reaction system. The non-covalent interaction (NCI) analysis was conducted to clarify the origin of regioselectivity, which was plotted by VMD 92 (version 1.9.3) and Multiwfn 93 (version 3.6) programs.…”

Section: Computational Detailsmentioning

confidence: 94%