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The experiment of the catalysts were characterized by FT-IR, N2 adsorption desorption diffuse reflectance UV and other methods were used to characterize the carrier. Experimental results show that, on TiO2-ZrO2 composite oxide carrier specific surface area, larger pore volume and nickel catalyst can well dispersed on the surface of the catalyst and using composite oxides catalyst has good thermal stability. Additives join on catalyst activity have great changes.MgO and K2O in the addition of dispersed on the surface of the carrier, the catalyst specific surface area decreases.K2O and MgO compared two area has little effect on the comparison table, K2O modified surface product is slightly lower than that of the MgO.
Activity of the catalyst evaluation experiment results show that the conversion of adiponitrile of MgO catalyst rate than K2O as additives of better catalytic activity. And with the increase of MgO content, the conversion of adiponitrile rate increased, hexamethylene diamine selectivity also increased obviously. But studies have shown that with increasing MgO content may reduce the nickel catalyst activity coordination number, thereby reducing the catalyst activity. The temperature of the catalyst activity test results shows, at the temperature of 80 degrees, conversion rate and selectivity of adiponitrile also reached highest, therefore the optimum reaction temperature is 80 degrees. Anti should be as solvent of ethanol and reactant adiponitrile of The mass ratio will also have certain influence on the catalytic reaction, the best quality of the measured ratio of ethanol:adiponitrile =4:1.
Keywords: TiO2-ZrO2 composite oxide; nickel; catalyst; synthesis of adiponitrile
目录
摘要 2
Abstract 3
1.1 己二胺 7
1.1.1 己二胺性质和用途 7
1.1.2 加氢反应制己二胺的工艺 7
1.1.3 己二胺的现状与发展 8
1.2 己二腈 11
1.2.1 己二腈的性质 11
1.2.2 己二腈的催化加氢的机理 12
1.3 催化剂的选择 12
1.3.1 ZrO2-TiO2复合氧化物的研究进展 13
1.3.2 ZrO2-TiO2复合氧化物载体的制备方法 15
1.3.3 镍催化剂的选择 16
1.4 本论文研究内容 16
第2章 实验方法及数据处理 17
2.1 引言 17
2.2 原料及仪器 17
2.2.1 实验试剂 17
2.2.2 主要实验仪器 17
2.3 载体及催化剂的表征手段 18
2.3.1 N2吸附脱附（BET） 18
2.3.2 样品的红外光谱分析（FT-IR） 18
2.3.3 样品的紫外分析 18
2.4 催化剂的活性及选择性评价 18
2.4.1 催化剂活性评价方法 18
2.4.2 催化剂活性及选择性的计算方法 18
第3章 载体的制备与表征