Synthesis of atomically dispersed cationic nickel-confined mesoporous ZSM-48(ANMZ-48)directed by metal complexes in amphiphilic molecules  

作　　者：Yu Chen Quanzheng Deng Yiru Mao Yuxi Fang Zhihua Cao Honggen Peng Shunai Che Lu Han 

机构地区：[1]School of Chemical Science and Engineering,Tongji University,Shanghai 200092,China [2]School of Chemistry and Chemical Engineering,Nanchang University,Nanchang 330031,China [3]School of Chemistry and Chemical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China [4]School of Resources and Environment,Nanchang University,Nanchang 330031,China [5]State Key Laboratory of Metal Matrix Composites,Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Science China Chemistry》2024年第1期343-350,共8页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(21922304,22276086);the Fundamental Research Funds for the Central Universities。

摘　　要：The synthesis of mesoporous zeolite-anchored atomically dispersed metal catalysts(ADCs)is a considerable challenge in chemistry and materials science.Here we report the synthesis of atomically dispersed cationic nickel-confined mesoporous ZSM-48(ANMZ-48)by in situ hydrothermal reaction employing a designed tri-functional metal complex template,by which the triquaternary ammonium groups in the hydrophilic region direct the formation of ZSM-48 zeolite;the aromatic groups in the hydrophobic tail generate the mesopores through π-π stacking;and the complexes formed by nickel ions coordinated with terpyridyl groups generate atomically dispersed Ni2+confined in zeolite frameworks due to the strong sintering resistance generated by the strong coordination interaction.The ANMZ-48 is consisting of stacking of sheet-like ZSM-48 domains connected by multiply crystal twinning sharing the common(011)plane,generating abundant of imbedded mesopores with the uniform thickness of~2.4 nm and with the width of 10-50 nm.The excellent catalytic activity and stability of ANMZ-48 were also reflected in the dry reforming of methane(DRM)reaction.

关 键 词：atomically dispersed catalyst mesoporous zeolite ZSM-48 in situ hydrothermal synthesis the dry reforming of methane reaction 

分 类 号：TQ426[化学工程] TQ221.11