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
收藏
页码：1224 / 1228
页数：5
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