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采用3-氨基丙基三甲氧基硅烷对天然斜发沸石进行改性,利用傅里叶变换红外光谱仪、X射线衍射仪、比表面积及孔隙度分析仪和综合热分析仪等对材料进行表征,采用饱和水蒸气吸附法评价材料的表面疏水性,采用重铬酸根离子、甲基橙和亚甲基蓝染料分别评价材料的吸附性.结果表明,氨基硅烷偶联剂改性显著提高了沸石的疏水性;偶联剂改性量为1.5∶5时,改性沸石的水蒸气吸附量为26.7mg/g,显著低于沸石的66mg/g.由于氨基基团在酸性条件下荷正电,制备的氨基功能化沸石对重铬酸根离子的去除率较沸石显著提高;相同条件下,改性沸石对重铬酸根离子溶液的脱色率达到92.9％,而未改性沸石仅为1.59％.由于偶联剂改性提高了沸石的疏水性,降低了沸石的比表面积和孔径,导致制备的氨基功能化沸石对甲基橙和亚甲基蓝的去除率较沸石有所降低;相同条件下,改性沸石对甲基橙和亚甲基蓝溶液的脱色率分别为70.88％和97.14％,均低于沸石的100％.“,”3-Aminopropyl trimethoxysilane was employed to modify natural clinoptilolite and the asprepared materials were characterized by fourier transform infrared spectrometer,X-ray diffraction,specific surface area and pore size distribution analysis,and thermal analyzer.Water vapor adsorption method was used to determine the hydropobicity of the materials.Cr2O72-ions,methyl orange and methylene blue were used to evaluate the adsorption property of the materials.The results showed that silane coupling agent modification improved the hydrophobicity of the zeolite.Water vapor adsorption on the modified zeolite (silane∶ zeolite =1.5∶5)decreased to 26.7mg/g compared with that on zeolite for 66mg/g.The decoloration rate of Cr2O72-ions solution treated with amino functionalized zeolite significantly increased compared with zeolite due to positively charged amino functional group under acidic condition.The decoloration rate of Cr2O72-ions treated with amino functionalized zeolite was 92.9％ while that for zeolite was only 1.59％.The decoloration rates of MO and MB solutions treated with the amino functionalized zeolite were both lower than those for zeolite due to higher hydrophobicity,lower specific surface area and pore sizes of the modified zeolite.The decoloration rates of MO and MB treated with amino functionalized zeolite were 70.88％ and 97.14％ while those for zeolite were both 100％.