本文研究了有机铝-SiO2型类气凝胶催化剂基材制备的原料配比与催化剂基材成型度之间的关系,分析了该催化剂基材的结构特征,并探讨了不同配方制备的催化剂基材对有机物的吸附特征。结果表明,原料中对催化剂基材成型的主要影响因素为氯化...本文研究了有机铝-SiO2型类气凝胶催化剂基材制备的原料配比与催化剂基材成型度之间的关系,分析了该催化剂基材的结构特征,并探讨了不同配方制备的催化剂基材对有机物的吸附特征。结果表明,原料中对催化剂基材成型的主要影响因素为氯化铝与间苯三甲酸钠,次要影响因素为硅酸钠量。最佳成型配比为氯化铝2.41 g/100 mL (H2O),硅酸钠3.66 g/100 mL (H2O),间苯甲酸钠2.84 g/100 mL (H2O)。该催化剂基材呈现较明显的絮状、多孔的三维结构,并且对亚麻油的吸附量为3021 mg/g。另外,当间苯三甲酸钠浓度在2.1~2.7 g/100 mL (H2O)范围内,硅铝加入量在21~63 mL范围内生成的催化剂基材有较好的有机物吸收性能。The relationship between the ratio of raw materials and the molding degree of the Organic Al-SiO2 aerogel catalyst substrate was studied, and the structural characteristics of the catalyst substrate were analyzed, its additive property to linseed oil was studied. The results show that the main factors affecting the forming of catalyst substrate are aluminum chloride and sodium isophthalate, and the secondary factors are sodium silicate. The best molding ratio was aluminum chloride 2.41 g/100 mL (H2O), sodium silicate 3.66 g/100 mL (H2O), sodium isobenzoate 2.84 g/100 mL (H2O). The catalyst has a three-dimensional structure of flocculation and porosity, and the adsorption capacity of linseed oil is 3021 mg/g. In addition, when the concentration of sodium isophthalate is in the range of 2.1~2.7 g/100 mL (H2O) and the addition of Si-Al is in the range of 21 mL ~ 63 mL, the catalyst substrate has good organic absorption performance.展开更多
文摘本文研究了有机铝-SiO2型类气凝胶催化剂基材制备的原料配比与催化剂基材成型度之间的关系,分析了该催化剂基材的结构特征,并探讨了不同配方制备的催化剂基材对有机物的吸附特征。结果表明,原料中对催化剂基材成型的主要影响因素为氯化铝与间苯三甲酸钠,次要影响因素为硅酸钠量。最佳成型配比为氯化铝2.41 g/100 mL (H2O),硅酸钠3.66 g/100 mL (H2O),间苯甲酸钠2.84 g/100 mL (H2O)。该催化剂基材呈现较明显的絮状、多孔的三维结构,并且对亚麻油的吸附量为3021 mg/g。另外,当间苯三甲酸钠浓度在2.1~2.7 g/100 mL (H2O)范围内,硅铝加入量在21~63 mL范围内生成的催化剂基材有较好的有机物吸收性能。The relationship between the ratio of raw materials and the molding degree of the Organic Al-SiO2 aerogel catalyst substrate was studied, and the structural characteristics of the catalyst substrate were analyzed, its additive property to linseed oil was studied. The results show that the main factors affecting the forming of catalyst substrate are aluminum chloride and sodium isophthalate, and the secondary factors are sodium silicate. The best molding ratio was aluminum chloride 2.41 g/100 mL (H2O), sodium silicate 3.66 g/100 mL (H2O), sodium isobenzoate 2.84 g/100 mL (H2O). The catalyst has a three-dimensional structure of flocculation and porosity, and the adsorption capacity of linseed oil is 3021 mg/g. In addition, when the concentration of sodium isophthalate is in the range of 2.1~2.7 g/100 mL (H2O) and the addition of Si-Al is in the range of 21 mL ~ 63 mL, the catalyst substrate has good organic absorption performance.
文摘在微型控制电液伺服单轴加载试验系统上,对含倾斜平行双裂纹的岩石类试件进行单轴加载试验研究,推导单轴压缩条件下试件应力强度因子(stress intensity factor,SIF)的解析表达式.分析裂纹表面摩擦系数对试件应力强度因子的影响,应用有限元法(finite element method,FEM)对同一问题进行数值分析,并与解析解进行比较.结果表明,随着裂纹表面摩擦系数的增大,应力强度因子减小,且采用有限元法求解应力强度因子是可行的,能准确预测含裂纹构件的安全性.此外,还对试件宏观裂纹的扩展机理进行了分析.
