Two-step hydrothermal synthesis of β-MCM-41 composite molecular sieves as supports of bifunctional catalysts for hydroisomerization of n-heptane

详细信息    查看全文

• 作者：Weiwei Tang ; Han Zhang ; Yi Lu ; Yue Yao ; Shuxiang Lu
• 关键词：Bifunctional catalyst ; Hydroisomerization of n ; heptane ; Composite molecular sieve ; β zeolite MCM ; 41
• 刊名：Journal of Porous Materials
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：23
• 期：6
• 页码：1489-1493
• 全文大小：538 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Catalysis
  Characterization and Evaluation Materials
  Physical Chemistry
  
• 出版者：Springer Netherlands
• ISSN：1573-4854
• 卷排序：23

文摘

β-MCM-41 composite molecular sieves were hydrothermally synthesized via two-step method. All the catalysts were characterized by XRD, FT-IR, BET and ICP. The catalysts were evaluated in hydroisomerization of n-heptane in a fixed bed flow reactor. Under the same condition, Pt/Hβ-MCM-41 was demonstrated to be a more mono-iso selectivity catalyst because the connection between mesopores and micropores accelerates the diffusion. Under optimal conditions, (precursor7.5d) Pt/Hβ-MCM-41 provided a very high selectivity to isomerization 90.0 % coupling with a considerable high conversion of n-heptane 59.9 % at 250 °C.