Department of Applied Chemistry, University of Science and Technology of China, No. 96, JinZhai Road, Hefei, Anhui 230026, PR China.
Department of Applied Chemistry, University of Science and Technology of China, No. 96, JinZhai Road, Hefei, Anhui 230026, PR China.
Bioresour Technol. 2019 Oct;290:121800. doi: 10.1016/j.biortech.2019.121800. Epub 2019 Jul 12.
In this work, corn cob was used as raw material to selectively produce acetonitrile via catalytic fast pyrolysis (CFP) in ammonia over Ga/HZSM-5 catalyst. A series of catalysts with different catalyst carriers (including HZSM-5, USY, MCM-41, HY, and γ-AlO) and active metals (including Fe, Co, Ni, Cu, Zn, Cr, Ca, Mg and Ga) were prepared and screened. The reaction conditions, such as temperature, ammonia flow rate and residence time were changed to investigate the effect on the product distribution and acetonitrile production. The results indicated that with the desired catalyst (2% Ga/HZSM-5) and optimal reaction conditions (Temperature 700 °C; ammonia flow rate 80 ml/min; residence time 2.4 s), the highest carbon yield of acetonitrile from corn cob with a value of 18.4% could be obtained, and the carbon selectivity in bio-oil was 83.5%. This study provides an economical and environmental-friendly method for the direct production of acetonitrile from abundant biomass.
在这项工作中，以玉米芯为原料，在 Ga/HZSM-5 催化剂上，通过氨催化快速热解（CFP）选择性地生产乙腈。制备并筛选了一系列具有不同催化剂载体（包括 HZSM-5、USY、MCM-41、HY 和 γ-AlO）和活性金属（包括 Fe、Co、Ni、Cu、Zn、Cr、Ca、Mg 和 Ga）的催化剂。改变反应条件，如温度、氨流量和停留时间，考察其对产物分布和乙腈生成的影响。结果表明，采用所需的催化剂（2%Ga/HZSM-5）和最佳的反应条件（温度 700°C；氨流量 80ml/min；停留时间 2.4s），可以从玉米芯中获得最高的乙腈收率为 18.4%，生物油中的碳选择性为 83.5%。本研究为从丰富的生物质资源中直接生产乙腈提供了一种经济环保的方法。
