Pore-mouth catalysis boosting the formation of iso-paraffins from syngas over bifunctional catalysts

作     者：Mengheng Wang Yaoyao Han Suhan Liu Zhiming Liu Dongli An Zhiqiang Zhang Kang Cheng Qinghong Zhang Ye Wang 汪孟恒;韩瑶瑶;刘素含;刘志铭;安冬丽;张智强;成康;张庆红;王野

作者机构：State Key Laboratory of Physical Chemistry of Solid SurfacesCollaborative Innovation Center of Chemistry for Energy MaterialsNational Engineering Laboratory for Green Chemical Productions of AlcoholsEthers and EstersCollege of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005FujianChina 

出 版 物：《Chinese Journal of Catalysis》 (催化学报（英文）)

年 卷 期：2021年第42卷第12期

页      面：2197-2205页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 

基　　金：科技部国家重点研究开发项目(2020YFB0606401,2019YFE0104400) 国家自然科学基金(91945301,22072120,21972116,22008203) 

主　　题：Pore-mouth catalysis Shape-selective catalysis Bifunction Syngas Gasoline 

摘      要：Recent studies confirm that the emerging bifunctional catalysts consisting of metal oxide and zeolites can directly convert syngas into high-quality gasoline,however,the formation mechanism of iso-paraffins and the difference with the conventional FT/zeolite catalyst have not been ***,three one-dimensional SAPO zeolites with diverse micropore sizes were synthesized and assembled with ZnAlO_(x)with spinel *** was found that ZnAlO_(x)/SAPO-41 and ZnAlO_(x)/SAPO-11 with medium micropore sizes favored the formation of C_(5)–C_(11)hydrocarbons with a high content of *** characterizations pointed out that the formation of iso-paraffins over SAPO-11 followed a pore-mouth catalysis mechanism,which means the isomerization of linear hydrocarbons can only take place near the pore mouth region of *** mechanism only allows the formation of mono-branched iso-paraffins in the C_(5)–C_(11)range,which are less prone to be cracked than their di-branched isomers.A careful comparative analysis between ZnAlO_(x)/SAPO-11 and Co/H-meso-ZSM-5 was also made in terms of product distribution,activity,and stability.