可再生能源2018，Vol.36Issue(7)：969-976,8.
载镍橄榄石催化剂对棉秆热解的影响
Influence of the nickel loaded olivine catalyst on the pyrolysis of cotton stalk
摘要
Abstract
Pyrolysis reaction was the first step during the catalytic biomass gasification. Catalytic pyrolysis of the cotton stalk has been conducted in a fixed bed reactor in order to reveal the influence of catalyst during the biomass pyrolysis using olivine and NiO-olivine as a catalyst. At the same time, the physical and chemical properties of catalyst has been characterized. The result showed that the catalyst has double effect during the catalytic biomass pyrolysis: On the one hand, carbon conversion was promoted due to further pyrolysis of the residual char by the catalyst; On the other hand, it has catalytic effect to cracking/reforming reaction of tar and methane witch promotes the gas yield and H2 concentration. The catalytic effect of those catalyst has been increased with the increasing temperature. The NiO at the surface of the NiO-olivine catalyst was reduced to metal Ni as the active center by the pyrolysis gas during pyrolysis. The catalytic activity of NiO-olivine has been increased with the increasing NiO loading ratio. However, when the NiO load is higher than 7%, the self-reduction of the catalyst consumes large amount of pyrolysis gas, results significant reduction in H2and CO in the gas production and increases the content of CO2and H2O. The results of this study can provides valuable information to understand the influence mechanism of nickel-based catalysts during biomass pyrolysis and provides reference for the catalytic gasification of biomass.关键词
热解/棉秆/载镍橄榄石/焦油/橄榄石Key words
pyrolysis/cotton stalk/NiO-olivine/tar/olivine分类
能源科技引用本文复制引用
别尔德汗·瓦提汗,亚力昆江·吐尔逊,迪丽努尔·塔力甫,阿布力克木·阿布力孜..载镍橄榄石催化剂对棉秆热解的影响[J].可再生能源,2018,36(7):969-976,8.基金项目
新疆维吾尔自治区自然科学基金项目(2017D01C077). （2017D01C077）
