Recent studies demonstrate that bifunctional catalysts composed of metal oxide and zeolite can effectively control the hydrocarbon distribution in syngas conversion. In this effort, a set of eight silicoaluminophosphate (SAPO) zeolites with different topology structures are synthesized and integrated with a binary ZnAlO oxide for syngas conversion. The effects of micropore window size and cage size of SAPO zeolites, and reaction conditions on the hydrocarbon distribution are preliminarily investigated. It was found that the hydrocarbon distribution is primarily determined by the window size of SAPO zeolites, and a volcano trend was observed between the chain length of hydrocarbon products and the window sizes. The cage size of zeolites and reaction conditions only modifies the hydrocarbon distribution in a narrow range of chain length. The effect of zeolite topology on the hydrocarbon distribution in syngas conversion is overall in line with that in methanol conversion. These findings provide an efficient strategy to increase the selectivity of an individual hydrocarbon product in syngas conversion, such as ethylene, propylene, butenes, iso-butane and C₅–C₁₁ iso-paraffins.

最近的研究表明，由金属氧化物和沸石组成的双功能催化剂可以有效地控制合成气转化过程中的碳氢化合物分布。在这项工作中，合成了八种具有不同拓扑结构的硅铝磷酸盐（SAPO）沸石，并与二元ZnAlO氧化物集成在一起用于合成气转化。初步研究了SAPO沸石的微孔窗口尺寸和笼尺寸，反应条件对烃分布的影响。发现烃分布主要由SAPO沸石的窗口尺寸决定，并且在烃产物的链长和窗口尺寸之间观察到火山趋势。沸石的笼尺寸和反应条件仅在狭窄的链长范围内改变了烃的分布。沸石拓扑结构对合成气转化中烃分布的影响总体上与甲醇转化中的一致。这些发现为提高合成烃转化过程中单个烃类产品（例如乙烯，丙烯，丁烯，异丁烷和C ₅ –C ₁₁ 异链烷烃。