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【答案】应助回帖
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sltmac: 金币+1 2012-05-03 08:53:49
ankang276: 金币+30, 翻译EPI+1, ★★★很有帮助 2012-05-03 13:36:33
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The hydroisomerization performance of the catalyst of ZSM-22/ZSM-23 cocrystallization molecules loaded onto noble metal was studied through nuclear magentic resonance spectroscopy (NMR). By associating the change of strcture characters and structure index of oils before and after hydroisomerization reactions with macroscopic properties including pour point and viscosity index of 200SN, 650SN, hydrocracking tail oil and their corresponding isomerization products, it can be known that the branch degree of lube base oil products increased to various extents, the content of normal paraffin decreased, and the content of isoparaffin increased after hydroisomerization reaction, and thus the pour point and viscosity index of base oil also decreased while the average chain length changed little. Compared with on Pt/ZSM-22 and Pt/ZSM-23 catalysts, the products of 650SN furfural refined oil after hydroisomerization on the Pt/ZSM-22/ZSM-23 catalyst with weak acidity had more isoparaffin, and longer average chain length. It indicated better hydroisomerization performance of Pt/ZSM-22/ZSM-23 than that of Pt/ZSM-22 and Pt/ZSM-23 catalysts. |
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