N-heptane reforming in a system of reactors interstage membrane to separate hydrogen

被引:5
作者
Ali, JK [1 ]
Baiker, A [1 ]
机构
[1] SWISS FED INST TECHNOL,DEPT CHEM ENGN & IND CHEM,CH-8092 ZURICH,SWITZERLAND
关键词
dehydrocyclization; n-heptane; toluene; hydrogen permeation; palladium-silver membrane; platinum;
D O I
10.1016/0926-860X(96)00024-5
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
A system of two plug-flow reactors equipped with an interstaged tubular palladium-silver (Pd-Ag) membrane for ex situ H-2 separation, was tested for n-heptane reforming on a commercial Pt/Al2O3 catalyst. This system afforded a 65% higher toluene yield at 400 degrees C and 17 bar than the same system without interstage membrane. Proper control of the permeate H-2 pressure inside the membrane unit seemed to be crucial for maintaining the permeability of the membrane. Low H-2 pressures resulted in a decrease of H-2 permeability.
引用
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页码:99 / 110
页数:12
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