摘要
研究4种均相催化剂RuCl2(PPh3)3、RhCl(PPh3)3、PdCl2(PPh3)2及NiCl2(PPh3)2各自对生物油催化加氢的活性,并对精制前后生物油中各类物质变化进行分析。结果表明,4种催化剂对醛、酮、酚及酸等转化均有一定的催化活性,其中RuCl2(PPh3)3可将90%以上的醛加氢转化,并对50%以上的酚类支链中的C C加氢;RhCl(PPh3)3则可将约85%的酚类支链上的C C加氢;后两种催化剂除了对醛酚有一定的催化加氢作用外,对酸转化为酯也具有催化活性。实验中未发现结焦物生成,说明均相催化技术非常适合精制生物油这种高热敏性体系。
Four homogeneous catalysts RuCl2 （ PPh3 ） 3, RhC1 （ PPh3 ） 3, PdCl2 （ PPh3 ） 2 and NiC12 （ PPh3 ） 2 were prepared for upgrading of bio-oil to improve its quality. From the results by GC-MS, the high reactive aldehydes, phenols and acids in bio-oil were converted substantially at mild conditions （under 100℃ ）. The conversions of aldehydes to corresponding alcohols and phenols with C = C side chain to phenols with saturated side chain by using catalyst RuCl2 （ PPh3 ） 3 were over 90% and 50%, respectively. Moreover, the conversion of phenols with C = C side chain was over 85% by using RhCl（ PPh3 ）3- Besides the ability to promote adehydes and C = C hy- drogenation, catalysts PdCl/（ PPh3 ） 2 and NiC12 （ PPh3 ）2 still shown performance in acids esterification. Meanwhile,due to the low temperature and catalysts high efficiency, char and coke were not found in all experiments. The results show the great potential of upgrading bio-oil using homogenous catalytic hydrogenation technique.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2013年第1期75-81,共7页
Acta Energiae Solaris Sinica
基金
国家高技术研究发展(863)计划(2009AA05Z406)
国家自然科学基金(50876099
50906077)
