Synthesis of bio-additives: Acetylation of glycerol over zirconia-based solid acid catalysts

被引：79

作者：

Reddy, Padigapati S. ^{[1
]}

Sudarsanam, Putla ^{[1
]}

Raju, Gangadhara ^{[1
]}

Reddy, Benjaram M. ^{[1
]}

机构：

[1] Indian Inst Chem Technol, Inorgan & Phys Chem Div, Hyderabad 500607, Andhra Pradesh, India

来源：

CATALYSIS COMMUNICATIONS | 2010年 / 11卷 / 15期

关键词：

Glycerol; Acetylation; Monoacetin; Triacetin; TiO2-ZrO2 mixed oxide; Promoted zirconia; ACETIC-ACID; ESTERIFICATION; SILICA;

D O I：

10.1016/j.catcom.2010.07.006

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Acetylation of glycerol with acetic acid was investigated over ZrO2, TiO2-ZrO2, WOx/TiO2-ZrO2 and MoOx/TiO2-ZrO2 solid acid catalysts to synthesize monoacetin, diacetin and triacetin having interesting applications as bio-additives for petroleum fuels. The prepared catalysts were characterized by means of XRD, BET surface area, ammonia-TPD and FT-Raman techniques. The effect of various parameters such as reaction temperature, molar ratio of acetic acid to glycerol, catalyst wt.% and time-on-stream were studied to optimize the reaction conditions. Among various catalysts investigated, the MoOx/TiO2-ZrO2 combination exhibited highest conversion (similar to 100%) with best product selectivity, and a high time-on-stream stability. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：1224 / 1228

页数：5

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