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Alkali metal modified nano-silicalite-1: an efficient catalyst for transesterification of triacetin

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Abstract

Nanocrystalline Silicalite-1 was synthesized by conventional hydrothermal method and transformed into efficient solid base catalyst by modification with alkali metals like lithium, potassium and cesium. The synthesized and modified catalyst was characterized by X-ray diffraction, scanning electron microscopy, nitrogen adsorption/desorption, Infra-red spectroscopy, thermogravimetry and basicity determination. The catalysts were tested for transesterification reaction of short triglyceride triacetin with methanol. 1–3 wt% alkali metal ions have been loaded on nano Silicalite-1 and used for transesterification reaction. Among the tested catalyst, 3 % potassium loaded Silicalite-1 (KS-3) showed highest reactivity giving 94 % triacetin conversion, and 98 mol% selectivity for methyl acetate. Reaction parameters such as triglyceride/alcohol molar ratio, catalyst amount, time and temperature were optimized with KS-3 catalyst. Kinetic studies were also done and found that transesterification of triacetin follows first order dependence.

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Authors and Affiliations

  1. Department of Science, School of Technology, Pandit Deendayal Petroleum University, Raisan, Gandhinagar, Gujarat, 382007, India

    Sunita Barot, Maaz Nawab & Rajib Bandyopadhyay

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  1. Sunita Barot
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  2. Maaz Nawab
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  3. Rajib Bandyopadhyay
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Correspondence to Rajib Bandyopadhyay.

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Barot, S., Nawab, M. & Bandyopadhyay, R. Alkali metal modified nano-silicalite-1: an efficient catalyst for transesterification of triacetin. J Porous Mater 23, 1197–1205 (2016). https://doi.org/10.1007/s10934-016-0178-z

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  • DOI: https://doi.org/10.1007/s10934-016-0178-z

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