生物质与皂脚在新型 ZSM-5/SiC 复合催化剂作用下的下吸式热解。
Co-pyrolysis of biomass and soapstock in a downdraft reactor using a novel ZSM-5/SiC composite catalyst.
机构信息
State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China.
State Key Laboratory of Food Science and Technology, Nanchang University, Nanchang, Jiangxi 330047, China; Engineering Research Center for Biomass Conversion, Ministry of Education, Nanchang University, Nanchang, Jiangxi 330047, China.
出版信息
Bioresour Technol. 2019 May;279:202-208. doi: 10.1016/j.biortech.2019.01.119. Epub 2019 Jan 25.
A ZSM-5/SiC composite catalyst was synthesized and characterized by Brunauer-Emmett-Teller analysis, X-ray diffraction, and scanning electron microscopy in this study. The composite catalyst had the characteristics of ZSM-5 and SiC, and the surface of SiC grew evenly with a layer of ZSM-5. The effect of the composite catalyst on the product distribution and chemical composition in a co-pyrolysis downdraft system was investigated. In a down system with a catalytic temperature of 450 °C, a feed-to-catalyst ratio of 2:1, and a soybean-soapstock-to-straw ratio of 1:1, the proportions of alkanes, olefins, aromatics, and phenoxy compounds were 6.82%, 4.5%, 73.56% and 11.11%, respectively. The composite catalyst combined the catalytic performance of ZSM-5 and SiC, increasing the proportion of aromatics and decreasing the proportion of oxygen-containing compound in the bio-oil. Moreover, the composite catalyst maintained its activity after reusing several times.
本研究采用比表面积及孔隙度分析仪、X 射线衍射仪和扫描电子显微镜对 ZSM-5/SiC 复合催化剂进行了合成和表征。该复合催化剂具有 ZSM-5 和 SiC 的特点，SiC 表面均匀生长了一层 ZSM-5。考察了复合催化剂在共热解下行式系统中对产品分布和化学成分的影响。在催化温度为 450°C、进料与催化剂的比例为 2:1、大豆油皂脚与秸秆的比例为 1:1 的下行系统中，烷烃、烯烃、芳烃和苯氧基化合物的比例分别为 6.82%、4.5%、73.56%和 11.11%。复合催化剂结合了 ZSM-5 和 SiC 的催化性能，提高了芳烃的比例，降低了生物油中含氧量化合物的比例。此外，复合催化剂在多次重复使用后仍保持活性。
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