凹凸棒石黏土对油菜秸秆热解的影响：原位催化研究。
Effect of palygorskite clay on pyrolysis of rape straw: an in situ catalysis study.
机构信息
School of Resource and Environmental Engineering, Hefei University of Technology, China; School of Chemistry, Physics and Mechanical Engineering, Science and Engineering Faculty, Queensland University of Technology, Australia.
School of Resource and Environmental Engineering, Hefei University of Technology, China.
出版信息
J Colloid Interface Sci. 2014 Mar 1;417:264-9. doi: 10.1016/j.jcis.2013.11.041. Epub 2013 Nov 22.
Biomass tar restricts the wide application and development of biomass gasification technology. In the present paper, palygorskite, a natural magnesium-containing clay mineral, was investigated for catalytic pyrolysis of rape straw in situ and compared with the dolomite researched widely. The two types of natural minerals were characterized with XRD and BET. The results showed that combustible gas derived from the pyrolysis increased with an increase in gasification temperature. The H(conversion) and C(conversion) increased to 44.7% and 31% for the addition of palygorskite and increased to 41.3% and 31.3% for the addition of dolomite at the gasification temperature of 800°C, compared with 15.1% and 5.6% without addition of the two types of material. It indicated that more biomass was converted into combustible gases implying the decrease in biomass tar under the function of palygorskite or dolomite and palygorskite had a slightly better efficiency than that of dolomite in the experimental conditions.
生物量焦油限制了生物质气化技术的广泛应用和发展。本文以天然含镁粘土矿物坡缕石为原料，对其进行了原位催化热解油菜秸秆的研究，并与广泛研究的白云石进行了比较。两种天然矿物均采用 XRD 和 BET 进行了表征。结果表明，随着气化温度的升高，热解产生的可燃气体增加。在 800°C 的气化温度下，添加坡缕石后 H（转化率）和 C（转化率）分别增加到 44.7%和 31%，添加白云石后分别增加到 41.3%和 31.3%，而未添加两种物质时分别为 15.1%和 5.6%。这表明在坡缕石或白云石的作用下，更多的生物质转化为可燃气体，生物质焦油减少，在实验条件下，坡缕石的效率略高于白云石。
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