γ-Valerolactone from pyrolysis of calcium salts of levulinic-formic acid mixtures derived from cellulose

被引：12
|
作者：
Amarasekara, Ananda S. [1 ]
Wiredu, Bernard [1 ]
Edwards, Dre'Langala N. [1 ]
机构：
[1] Prairie View A&M Univ, Dept Chem, Prairie View, TX 77446 USA
来源：
BIOMASS & BIOENERGY | 2015年 / 72卷
基金：
美国国家科学基金会;
关键词：
Cellulose; Calcium levulinate; Calcium formate; Pyrolysis; gamma-valerolactone; TRANSPORTATION FUELS; CATALYTIC CONVERSION; SELECTIVE PRODUCTION; BIOMASS; HYDROGENATION; LIQUID; NANOPARTICLES; CHEMICALS; HYDROCARBONS; SUPPORT;
D O I：
10.1016/j.biombioe.2014.11.023
中图分类号：
S2 [农业工程];
学科分类号：
0828 ;
摘要：
Hydrothermal degradation of cellulose (DP similar to 450) in 0.02-0.20 mol dm(-3) aq. hydrochloric acid at 160 degrees C, for 2-8 h and neutralization of the filtrate with calcium hydroxide can be used to prepare a mixture of carboxylic acid calcium salts. The mixture consists of calcium levulinate and calcium formate in approximately 1:0.65 mol ratio, together with CaCl2. Pyrolysis of this crude mixture at 350 degrees C for 3.0 min produces pyrolyzate oil yield of 140-210 g kg(-1) of dry salt mixture. The pyrolyzate was identified as similar to 97% gamma-valerolactone, with the minor products; levulinic acid, 3-methyl-2-cyclopentenone, and 2,3-dimethy1-2-cyclopentenone by using a combination of GC-MS and NMR spectroscopy. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：39 / 44
页数：6
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