Chemistry Letters, Vol.34, No.2, 148-149, 2005
Designing a new kind of capsule catalyst and its application for direct synthesis of middle isoparaffins from synthesis gas
A catalyst in the form of capsule catalyst was prepared by coating HZSM5 membrane on a preshaped Cp/SiO2 catalyst pellet. The capsule catalyst with HZSM5 membrane exhibited excellent selectivity for light hydrocarbon synthesis, especially for isoparaffin synthesis from syngas (CO + H-2). Long chain hydrocarbon formation was totally suppressed by the zeolite membrane. The modification of membrane and core catalyst significantly improved the catalytic properties of these new kinds of capsule catalysts.