【摘要】 利用低温氮吸附法对新型杂原子分子筛 M-Si-ZSM-5(M=B、Si、Ti、V、Fe)的孔结构进行了分析。结果表明,5种分子筛的吸附等温线都属于Ⅰ型等温线。利用 MMP 法分析吸附等温线得到孔结构参数。结果表明,5种分子筛的微孔体积都集中于最可几孔径处,且随着杂原子原子半径的增大,其最可几孔径、比表面积和孔体积均增加。更多还原

【Abstract】 The pore structures of hetero-pentasil Molecular sieves have been analysedby low temperature nitrogen adsorption method.The nitrogen adsorption iso-therms are type I for five M-Si-ZSM-5（M=B,Si,Ti,V,Fe）.The spread of themicropore distributions are very narrow and the experimental diameters of thepores are in the range of 6.73×10^-10～7.23×10^-10m.更多还原