Synthesis and utilization of meso and microporous catalysts for the valorization of newspaper waste to bio-based chemicals using Choline chloride as biodegradable solvent

Tyagi, Uplabdhi; Anand, Neeru

doi:10.1016/j.clce.2022.100055

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…Sustainable benefits of the present strategy for alkylation of toluene with benzyl alcohol over a hierarchical catalyst include high benzyl alcohol conversion (98 %) and strong selectivity (69 %) towards mono‐benzylated toluene, as well as catalyst reusability (up to four cycles). It′s possible that product or substrate deposition inside the mesopores is responsible for the gradual decrease in conversion observed in subsequent cycles [8,65–67] …”

Section: Resultsmentioning

confidence: 99%

“…It's possible that product or substrate deposition inside the mesopores is responsible for the gradual decrease in conversion observed in subsequent cycles. [8,[65][66][67] The study presents the P-XRD pattern of the spent catalyst, as depicted in Figure S7. Analysis of the XRD pattern indicates that only a minor degree of structural degradation was observed, as evidenced by a slight reduction in peak intensity while the peak location remained unchanged in all cases.…”

Section: Recyclability Testmentioning

confidence: 99%

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Alkylation of Toluene to Mono‐benzylated Toluene over Micro‐mesoporous Zeolite: Effect of Post‐synthetic Treatment and Catalytic Application

Koshti,

Bandyopadhyay,

Kumar

et al. 2023

Eur J Inorg Chem

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Post‐synthetic modification using acid (HNO3) and base (NaOH) are utilised to synthesize hierarchical micro‐mesoporous zeolites with different pore structure. To investigate structural change in materials, X‐ray diffraction (XRD), Scanning electron microscope (SEM), Inductive coupled plasma‐optical emission spectrometry (ICP‐OES), 29Si and 27Al MAS NMR, and N2 adsorption‐desorption isotherms techniques were employed. Acid base titration, and ammonia‐temperature programmed desorption (NH3‐TPD) was performed to evaluate acidic characteristics of materials. As revealed by characterisation, the structure was well preserved after the modification. Hierarchical materials along with parent materials have been evaluated in the toluene alkylation with benzyl alcohol producing mono‐benzylated toluene. All zeolite samples were proved to be catalytically active by their result in the alkylation reaction. Acid treated samples were compared with base treated and parent samples. The results indicate that, base modification significantly increases the mesoporous pore volume in all zeolite as compared to acid modification. Moreover, the highest benzyl alcohol conversion was found to be 98 % in the base modified Beta, with the highest mono‐benzylated toluene selectivity (69 %). Reaction optimization was also studied by altering reaction duration, temperature, and catalyst amount. The reaction products were analysed using Gas Chromatography (GC) and confirmed using Gas chromatography mass spectrometry (GC‐MS).

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Section: Resultsmentioning

confidence: 99%