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8340322 
Meetings & Symposia 
Properties of alkane isomerization products 
Li, CL; Zhu, ZL; Cao, JG 
1991 
Publ by ACS 
New York, NY, USA 
Symposium on Alkylation, Aromatization, Oligomerization and Isomerization of Short Chain Hydrocarbons over Heterogeneous Catalysts 
36 
4 
825-831 
English 
One of the most economical processes for octane improvement is to isomerize n-pentane(nC5) and n-hexane(nC6) containing straight run naphtha. C5/C6 alkane hydroisomerization over a noble metal loaded zeolite, such as the Pt/H-mordenite catalyst(Pt/HM), has been widely applied in many refineries. The alternative is to apply TIP process. Sometimes marked amount of gaseous hydrocracking products (C1-C4) are produced by some catalysts even for pentane isomerization. Kinetic parameters of these individual compounds must be considered to predict product compositions and estimate process performance. When hydroisomerization reactions were performed in the microreactor under pressure of 1.96MPa and temperature range of 490-570K, yields of gaseous hydrocracking products (C1-C4) were less then 1% and no neopentane was detected. The same results were obtained both in a laboratory reactor where 60g of the catalysts was loaded and a pilot plant with a feed rate of 1000t/y. Therefore, it was reasonable to use a simplified first-order, reversible kinetic model for this system.