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