Enhanced sugar alcohol production from cellulose by pretreatment with mixed ball-milling and solid acids.
Enhanced sugar alcohol production from cellulose by pretreatment with mixed ball-milling and solid acids.
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DOI：
10.15376/biores.11.1.1843-1854
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发表时间：
2016-01
期刊：
影响因子：
1.5
通讯作者：
Qiying Liu;Jinyi Tan;Chiliu Cai;Longlong Ma;Tiejun Wang
中科院分区：
文献类型：
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作者：
Qiying Liu;Jinyi Tan;Chiliu Cai;Longlong Ma;Tiejun Wang
有效的预处理是生物质催化转化的关键步骤。本文采用混合球磨法对纤维素进行固体催化预处理。该方法进行了测试与固体酸和商业5重量%的Ru/C在水中，和预处理对产率的影响进行了测量，通过水解-氢化的纤维素糖醇，这是用于生产汽油和精细化学品的平台化合物。研究了球磨方式、球磨时间、反应参数等因素对产物的影响。并对处理前后纤维素的性质和催化剂的性质进行了分析。在463 K下，以非晶磷酸锆（ZrP）和Ru/C为催化剂，混合球磨2 h，糖醇的产率可达90.3%。在相同的反应条件下，球磨24 h，高糖醇的产率比单一球磨法快12倍。这是由于纤维素与催化剂之间的接触增强，从而促进了纤维素的速率决定性解聚，以获得高的糖醇产率。
Efficient pretreatment is the key step in catalytic biomass conversion. Herein, a mixed ball-milling method was used to pretreat cellulose with a solid catalyst. The method was tested with solid acid and commercial 5 wt% Ru/C in water, and the effect of pretreatment on yield was measured by the hydrolytic-hydrogenation of cellulose to sugar alcohols, which are the platform compounds for the production of gasoline and fine chemicals. The influence of ball-milling mode, time, and reaction parameters was studied. The properties of cellulose and the catalyst were also analyzed before and after treatment. The yield of sugar alcohols reached 90.3% at 463 K with amorphous zirconium phosphate (ZrP) and Ru/C and a mixed ball-milling time of 2 h. The high sugar alcohol yield was achieved 12 times faster than with the single ball-milling method under the same reaction conditions for 24 h. This effect is ascribed to the enhanced contact between cellulose and catalyst, which promotes the rate-determined cellulose depolymerization to obtain high sugar alcohols yield.