含硼、铝、镓、铟、ZSM-5型分子筛的固态核磁共振研究

SOLID STATE NMR STUDY ON ZSM-5 TYPE MOLECULAR SIEVES CONTAINING BORON, ALUMINIUM, GALLIUM AND INDIUM

考察了含硼、铝、镓、铟ZSM-5型四种杂原子分子筛^(29)SiMAS-NMR谱的变化规律;测量了~1H NMR吸收谱线二次矩,推算出杂原子分子筛中质子与B、Al、Ga、In原子间的距离。

High resolution 29Si NMR spectra of ZSM-5 type molecular sieves containing boron, aluminium, gallium and indium respectively have been investigated by using magic angle sample spinning technique. The distance between H and B (or Al,Ga, In) in H-BZSM-5 (or H-A1ZSM-5, H-GaZSM-5, H-InZSM-5) molecular sieve was determined based on the NMR second moments.