Influences of Leolite Acidity on Hydroisomerization of N-dodecane
[1]CHEN Yi-liang,ZHU Yang-yang,XU Jun,et al.Influences of Leolite Acidity on Hydroisomerization of N-dodecane[J].Journal of Zhengzhou University (Engineering Science),2013,34(05):121-124.[doi:10.3969/j.issn.1671-6833.2013.05.027]
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Journal of Zhengzhou University (Engineering Science)[ISSN
1671-6833/CN
41-1339/T] Volume:
34
Number of periods:
2013 05
Page number:
121-124
Column:
Public date:
2013-09-10
- Title:
- Influences of Leolite Acidity on Hydroisomerization of N-dodecane
- CLC:
- X703.1
- Abstract:
- The hydroisomerization of n-dodecane was studied in this paper.Pt/zeolite catalysts,which respec-tively used monodimensional pore molecular seives,ZSM-22,L and SAPO-11 as support,were prepared byimpregnation method and characterized by XRD and NH3 -TPD.The influences of their acidity on hydroisomer-ization were investigated as well. The results showed that the total acid amount of the supports affect the activi-ty of the catalysts,a higher total amount of acid in the catalyst having a higher activity. The selectivity ofhydroisomerization is related to the acid strength,strong acidic centers make reaction toward the cleavage di-rection,reducing the i-dodecane selectivity; the weak acid sites conducive to the hydroisomerization of n-do-decane,and the number of weak acid sites correlated well with i-dodecane selectivity in hydroisomerization.When weak acid sites is the largest proportion in the total acid amount,the hetcrogeneous product selectivitywill be higher. This study will provide a better idea to enhance and improve catalyst acidic,which is used inthe the hydroisomerization of macromolecular paraffin.
- References:
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Last Update:
1900-01-01