【摘要】 以二正丁胺（DBA）为微孔模板剂，葡萄糖为介孔模板剂，水热法合成了多级孔SAPO-41分子筛，并通过湿法浸渍-氢气还原法制备了多级孔SAPO-41负载钯双功能催化剂（Pd/SAPO-41）。通过XRD、SEM、TEM、N₂物理吸附、吡啶吸附原位红外（Py-IR）以及H2化学吸附等分析手段，表征了微孔和多级孔SAPO-41样品结构、形貌、表面酸性以及Pd/SAPO-41的Pd分散度。添加介孔模板剂对SAPO-41分子筛晶体结构和形貌影响较小，但可增大比表面积和总孔容，构建出由微孔和介孔组成的多级孔。随着葡萄糖的加入量提高，SAPO-41表面B酸量和酸强度以及Pd/SAPO-41上金属分散度有所降低。多级孔Pd/SAPO-41催化正癸烷加氢异构化反应结果表明，加氢异构化反应的转化率有所降低，但异构化产物的选择性明显提高，特别是双支链产物。S41（0.2）-G（0.26）在90%转化率下，双支链异构化产品选择性可达40%以上。更多还原

【Abstract】 The hierarchical pore SAPO-41 molecular sieves are synthesized by hydrothermal method with the dibutylamine（DBA） as microporous template and glucose as mesoporous template. The hierarchical pore SAPO-41 loaded palladium bifunctional catalysts（Pd/SAPO-41） are prepared by wet impregnation and hydrogen reduction method. By means of XRD, SEM, TEM, N₂ physical adsorption, pyridine adsorption in situ infrared（Py-IR）and H₂ chemical adsorption, the structure, morphology, surface acidity of SAPO-41 and Pd/SAPO-41 are characterized as well as the Pd dispersion in Pd/SAPO-41. The addition of mesoporous template has less effect on the crystal structure and morphology of SAPO-41 molecular sieves, but it can in-crease the specific surface area and total pore volume, by which the hierarchical pore composed of micropore and mesopore is established. The B acid content and acid strength on the surface of SAPO-41, as well as the metal dispersion in Pd/SAPO-41 decreases with the increase of glucose adding amount. The hydroisomerization of n-decane catalyzed by hierarchical pore Pd/SAPO-41 catalysts shows that the conversion of hydroisomerization de-creases, but the selectivity of isomerization products, especially the di-branched isomers, significantly increases. The S41（0.2）-G（0.26） shows a selec-tivity of di-branched isomers more than 40% when the conversion is 90%.更多还原