High-yielding synthesis of alkyl stearates from stearic acid within a closed batch reactor using heteropolyacids as efficient and recyclable catalyst

Autor:	Sib Sankar Mal, Saikat Dutta, Ritesh Tiwari, Navya Subray Bhat, Nivedha Vinod
Rok vydání:	2020
Předmět:	chemistry.chemical_classification Reaction conditions chemistry.chemical_compound Chemistry Batch reactor Phosphotungstic acid Stearic acid Recyclable catalyst High yielding Alkyl Nuclear chemistry Catalysis
Zdroj:	NATIONAL CONFERENCE ON ENERGY AND CHEMICALS FROM BIOMASS (NCECB).
ISSN:	0094-243X
Popis:	This study reports high-yielding and scalable synthesis of alkyl stearates from stearic acid (SA) within a closed batch reactor using commercially-available heteropolyacid catalysts. The reaction was carried out by using different commercially-available heteropolyacids and reaction conditions were optimized by using phosphotungstic acid (PTA) catalyst. The solvent-free, gram-scale reactions afforded alkyl stearates in excellent isolated yields (>95%) within 4 h at 110 °C using slight excess of alcohols and only 1 mol% of the phosphotungstic acid (PTA) catalyst. The PTA catalyst was successfully recovered and reused for five consecutive cycles without significant loss in mass or activity.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::1cb6f036b030c2c96e2f823f9c7e377d https://doi.org/10.1063/5.0005580 Zobrazit plný text záznamu