Effect of zeolites on the alkylation of aromatics with alkanes using a Pd nanoparticle/solid acid cooperative catalytic system

作     者：Satoshi Misaki Moe Takabatake Shingo Hasegawa Yuichi Manaka Wang-Jae Chun Ken Motokura 

作者机构：Department of Chemical Science and EngineeringSchool of Materials and Chemical TechnologyTokyo Institute of Technology4259 Nagatsuta-choMidori-kuYokohama 226-8502Japan Department of Chemistry and Life ScienceYokohama National University79-5 TokiwadaiHodogaya-kuYokohama 240-8501Japan Renewable Energy Research CenterNational Institute of Advanced Industrial Science and Technology(AIST)2-2-9 MachiikedaiKoriyama 963-0298Japan Graduate School of Arts and SciencesInternational Christian UniversityMitakaTokyo 181-8585Japan 

出 版 物：《Green Carbon》 (绿碳（英文）)

年 卷 期：2024年第2卷第3期

页      面：282-290页

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

主　　题：Alkylation Alkane Zeolite Palladium C-H bond activation 

摘      要：The direct alkylation of benzene with alkanes is an effective method for alkylbenzene *** group previously discovered that a mixture of supported Pd nanoparticles and solid acids effectively promoted the alkylation of benzene with ***,the alkylation of toluene with n-heptane was catalyzed by physical mixture of H-mordenite and Pd nanoparticles supported on hydrotalcite to afford the corresponding C7 alkylation product with 87%selectivity and 14%toluene *** reaction slightly proceeded in the absence of Pd nanoparticles or H-mordenite,indicating cooperative catalysis by the two different solid ***,the high stability of the Pd nanoparticles on hydrotalcite was confirmed via reuse experiments and transmission electron microscopy(TEM)*** catalyst mixture was reused at least three times without any loss of product yield,and after three reuses,TEM analysis revealed that the size of the Pd nanoparticles following the initial catalytic reaction was similar to that of the *** transmission electron microscopy with energy dispersive spectroscopy(STEM-EDS)analysis of the recovered catalyst mixture revealed the preservation of Pd nanoparticles on the hydrotalcite surface,as well as the close positioning of the two different catalyst particles,thus suggesting interparticle hydrogen *** structure of the solid acid strongly affected the alkylation product *** example,H-mordenite showed high selectivity for the n-heptane alkylation product with a C7 alkyl chain,whereas the selectivity changed with other *** cooperative catalytic system can be applied to the alkylation of other substituted benzenes,such as xylenes and phenols,with good selectivity toward the desired alkylation product.