• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Energy Conversion & Management >In line wood plastic composite pyrolyses and HZSM-5 conversion of the pyrolysis vapors
【24h】

In line wood plastic composite pyrolyses and HZSM-5 conversion of the pyrolysis vapors

机译：在线木塑复合热解和热解蒸气的HZSM-5转化

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Wood powder-high density polyethylene (WPE) and wood powder-polypropylene (WPP) composites were pyrolyzed at 550 degrees C in the presence of HZSM-5 catalysts using analytical pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS). Immediately passing the pyrolysis vapors through the HZSM-5 changed the product distribution by producing aromatic hydrocarbons and eliminating tar formation. Zeolite HZSM-5 was employed with three different silica-to-alumina ratios (25, 50, 260). The influence of catalysts on the yields of aliphatic and aromatic hydrocarbons, furan derivatives, lignin-derived compounds and acetic acid was studied. High yields of aliphatic hydrocarbons formed in WPE or WPP pyrolysis alone. The highest yields of aromatic hydrocarbons from WPE or WPP pyrolysis vapors over HZSM-5 occurred with a zeolite framework Si/Al ratio of 25 (more acid sites), suggesting that the concentration of acid sites inside the zeolite was critical for maximizing aromatic yield. Exposing vapors to HZSM-5 increased the hydrocarbon yields and reduced the amount of acetic acid produced, resulting in increased calorific value. The yields of typical aromatics from catalytic pyrolysis of WPP mixture and composites were higher than those of the calculated values of poplar wood and PP catalytic pyrolysis individually, indicating that a synergistic effect occurred to enhancing aromatic production. Compared to poplar wood/PP mixture, catalytic pyrolysis of the WPP composite generated more multi-ring aromatics and less mono-ring aromatics due to the more complete and thorough mixing achieved by the melt-extrusion process. A general mechanism of catalytic fast pyrolysis of wood-plastic composites was proposed in the presence of HZSM-5.(C) 2016 Elsevier Ltd. All rights reserved.
机译：使用分析型热解-气相色谱/质谱法（Py-GC / MS），在HZSM-5催化剂存在下，将木粉-高密度聚乙烯（WPE）和木粉-聚丙烯（WPP）复合材料在550摄氏度下热解。热解蒸气立即通过HZSM-5，通过产生芳族烃并消除焦油形成，改变了产品分布。 HZSM-5沸石使用三种不同的二氧化硅/氧化铝比率（25、50、260）。研究了催化剂对脂肪族和芳香族烃，呋喃衍生物，木质素衍生的化合物和乙酸的收率的影响。仅在WPE或WPP热解中形成的脂肪烃的产率高。在HZSM-5上WPE或WPP热解蒸气中芳烃的最高收率发生在沸石骨架Si / Al之比为25（更多酸位）的情况下，这表明沸石内酸位的浓度对于最大限度地提高芳烃收率至关重要。使蒸气暴露于HZSM-5可提高烃的收率并减少产生的乙酸的量，从而导致发热量增加。 WPP混合物和复合材料的催化热解过程中典型芳烃的收率高于杨木和PP催化热解的计算值，表明产生了协同作用，提高了芳烃的产生。与白杨木/ PP混合物相比，WPP复合材料的催化热解产生了更多的多环芳族化合物，而单环芳族化合物则更少，这是由于熔融挤出过程实现了更完全和彻底的混合。在存在HZSM-5的情况下，提出了木塑复合材料催化快速热解的一般机理。（C）2016 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Energy Conversion & Management》 |2017年第6期|206-215|共10页
  • 作者

    Lin Xiaona; Zhang Zhijun; Tan Shun; Wang Fengqiang; Song Yongming; Wang Qingwen; Pittman Charles U. Jr.;

  • 作者单位

    Northeast Forestry Univ, MOE Key Lab Biobased Mat Sci & Technol, Harbin 150040, Peoples R China;

    Northeast Forestry Univ, MOE Key Lab Biobased Mat Sci & Technol, Harbin 150040, Peoples R China|Key Lab Wood Sci & Technol, Hangzhou 311300, Zhejiang, Peoples R China;

    Northeast Forestry Univ, MOE Key Lab Biobased Mat Sci & Technol, Harbin 150040, Peoples R China;

    Northeast Forestry Univ, MOE Key Lab Biobased Mat Sci & Technol, Harbin 150040, Peoples R China;

    Northeast Forestry Univ, MOE Key Lab Biobased Mat Sci & Technol, Harbin 150040, Peoples R China;

    South China Agr Univ, Coll Mat & Energy, Guangzhou 510642, Guangdong, Peoples R China;

    Mississippi State Univ, Dept Chem, Mississippi State, MS 39762 USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Wood-plastic composites; HZSM-5; Fast pyrolysis; Catalysis; Aromatics;

    机译：木塑复合材料;HZSM-5;快速热解;催化;芳烃;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号