• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Thermally stable phosphorus and nickel modified ZSM-5 zeolites for catalytic co-pyrolysis of biomass and plastics
【24h】

Thermally stable phosphorus and nickel modified ZSM-5 zeolites for catalytic co-pyrolysis of biomass and plastics

机译：热稳定的磷和镍改性的ZSM-5沸石，用于生物质和塑料的催化共热解

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

A series of phosphorus (P) and phosphorusickel (P/Ni) modified ZSM-5 zeolites were prepared by impregnation of a conventional ZSM-5 zeolite with P and subsequent Ni. The conventional, P-, and P/Ni-modified ZSM-5 zeolites were then tested as the catalysts for petrochemical production from cofeed catalytic fast pyrolysis (CFP) of pine wood and low-density polyethylene (LDPE) mixtures. Results showed that the yield of valuable petrochemicals (olefins and aromatic hydrocarbons) from co-feed CFP increased from 42.9 C% for conventional ZSM-5 to 52.8-54.1 C% for P-and P/Ni-modified ZSM-5, while the yields of low-value alkanes and undesired char/coke decreased from 17.3 C% and 22.6 C% to 9.6-10.2 C% and 18.9-15.7 C%, respectively. ZSM-5 impregnation with P and P/Ni thus significantly improved the product distribution in co-feed CFP of biomass and LDPE. In addition, modification with P and P/Ni improved considerably the hydrothermal stability of zeolites to resist steam-induced catalyst deactivation that may occur in co-feed CFP. When the conventional ZSM-5 zeolite was pretreated with 100% steam at 550 degrees C for 3-9 h, it produced 26.7-32.1% lower aromatic yields than untreated ZSM-5 in co-feed CFP. In contrast, steam pretreatment did not considerably affect the activity of P-and P/Ni-ZSM-5 zeolites for aromatic production. They maintained comparable aromatic yields in co-feed CFP when they had been steam pretreated for up to 9 h. These results indicate that ZSM-5 modification with P and P/Ni may provide a viable way to improve the catalyst's activity and life time for petrochemical production from co-feed CFP of biomass and plastics.
机译：通过用P和随后的Ni浸渍常规ZSM-5沸石来制备一系列磷（P）和磷/镍（P / Ni）改性的ZSM-5沸石。然后测试了常规，P-和P / Ni改性的ZSM-5沸石作为松木和低密度聚乙烯（LDPE）混合物的共进料催化快速热解（CFP）进行石油化工生产的催化剂。结果表明，共进料CFP中有价值的石化产品（烯烃和芳烃）的产率从常规ZSM-5的42.9 C％提高到P和P / Ni改性的ZSM-5的52.8-54.1 C％，而低值烷烃和不希望的焦炭/焦炭的收率分别从17.3 C％和22.6 C％降至9.6-10.2 C％和18.9-15.7 C％。因此，用P和P / Ni进行ZSM-5浸渍可显着改善生物质和LDPE共进料CFP中的产品分布。另外，用P和P / Ni进行改性显着改善了沸石的水热稳定性，以抵抗在共进料CFP中可能发生的蒸汽诱导的催化剂失活。当常规ZSM-5沸石在550摄氏度下用100％蒸汽预处理3-9小时时，在共进料CFP中，芳烃的收率比未处理的ZSM-5低26.7-32.1％。相反，蒸汽预处理并未显着影响P-和P / Ni-ZSM-5沸石用于芳烃生产的活性。经过蒸汽预处理长达9小时后，它们在共进料CFP中保持了相当的芳烃收率。这些结果表明，用P和P / Ni改性ZSM-5可能为提高催化剂活性和生物质和塑料共进料CFP生产石化产品的寿命提供可行的方法。

著录项

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