One-pot synthesis of ordered nanoporous amorphous H-Zn-aluminosilicate for catalysis of bulky molecules

Diwakar, Jitendra; Viswanadham, Nagabhatla; Kumar, Saurabh; Kumar, Adarsh; Saxena, Sandeep K.

doi:10.1039/c8se00150b

Cited by 11 publications

(2 citation statements)

References 33 publications

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“…The untreated parent mordenite sample showed characteristic peaks for a typical mordenite structure at the positions of 3450 to 3700 cm −1 , 1650 cm −1 , 1050 cm −1 , and 451 cm −1 attributed to stretching of the silanol group at the terminal/bridging Si−O−Al group, bending frequency of H−OH, asymmetric stretching of Si− O−T (T−Si or Al), and Al−O bending vibration group, respectively. 12,16 All alkali-treated samples also showed the characteristic peaks for mordenite, indicating that the structure of mordenite was retained after alkali treatment. However, the peak intensities for peaks at 1050 and 451 cm −1 were observed to be increased with the severity of alkali treatment, i.e., parent MOR < MOR0.3 < MOR0.5 < MOR1.…”

Section: Acs Sustainablementioning

confidence: 95%

“…Glycerol has high potential as a platform chemical due to its tri hydroxyl group, which is convertible to many products via etherification, acetalization, aromatization, dehydration, etc. − Among these, the acetalization of glycerol with acetone yields solketal, which has numerous applications like a fuel additive, solvent, and plasticizer and in the pharmaceutical industry as a suspension agent . Additionally, solketal is reported to improve the properties of biofuel in terms of octane boosting .…”

Section: Introductionmentioning

confidence: 99%

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Sustainable Upgrade of Bioderived Glycerol to Solketal through Acetalization over Metal-Free Mordenite Catalysts

Saini

Tathod

Saxena

et al. 2022

ACS Sustainable Chem. Eng.

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In the current work, acetalization of crude glycerol to produce valuable solketal, a renewable fuel additive, is studied over metal-free mordenite-based catalysts. The perfect combination of the appropriate acidity and suitable porosity is required to achieve optimum solketal yield from glycerol. The property–activity correlation was established through various physicochemical characterizations, and reaction parameters were optimized to maximize the solketal yield. The modified mordenite catalyst showed exceptionally high catalytic activity toward the acetalization of crude glycerol and as high as 99% yield of solketal was achieved under mild reaction conditions, i.e., a reaction temperature of 60 °C, a time of 4 h, and atmospheric pressure. The catalyst showed tolerance for water and other impurities present in crude glycerol in addition to excellent recyclability up to three cycles without any regeneration treatment. The economical, easy-to-prepare, recyclable, metal-free, moisture-tolerant nature of the catalyst makes it a promising catalyst candidate to be used at a larger scale. The catalytic process has the potential to utilize crude glycerol obtained from biodiesel plants for the synthesis of biofuel additives solketal. This highlights the industrial and environmental significance of this work.

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Section: Acs Sustainablementioning

confidence: 95%